{"sample_id": "MitoEM-H_z0400", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 400, "image": "MitoEM-H/im/im0400.png", "mask": "MitoEM-H/mito-val-v2/seg0400.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 19245, "fg_fraction": 0.042963}
{"sample_id": "MitoEM-H_z0401", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 401, "image": "MitoEM-H/im/im0401.png", "mask": "MitoEM-H/mito-val-v2/seg0401.tif", "shape": [4096, 4096], "n_instances": 367, "max_instance_id": 19245, "fg_fraction": 0.043424}
{"sample_id": "MitoEM-H_z0402", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 402, "image": "MitoEM-H/im/im0402.png", "mask": "MitoEM-H/mito-val-v2/seg0402.tif", "shape": [4096, 4096], "n_instances": 378, "max_instance_id": 19245, "fg_fraction": 0.043353}
{"sample_id": "MitoEM-H_z0403", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 403, "image": "MitoEM-H/im/im0403.png", "mask": "MitoEM-H/mito-val-v2/seg0403.tif", "shape": [4096, 4096], "n_instances": 386, "max_instance_id": 19245, "fg_fraction": 0.04278}
{"sample_id": "MitoEM-H_z0404", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 404, "image": "MitoEM-H/im/im0404.png", "mask": "MitoEM-H/mito-val-v2/seg0404.tif", "shape": [4096, 4096], "n_instances": 377, "max_instance_id": 19245, "fg_fraction": 0.041855}
{"sample_id": "MitoEM-H_z0405", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 405, "image": "MitoEM-H/im/im0405.png", "mask": "MitoEM-H/mito-val-v2/seg0405.tif", "shape": [4096, 4096], "n_instances": 380, "max_instance_id": 19244, "fg_fraction": 0.041983}
{"sample_id": "MitoEM-H_z0406", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 406, "image": "MitoEM-H/im/im0406.png", "mask": "MitoEM-H/mito-val-v2/seg0406.tif", "shape": [4096, 4096], "n_instances": 383, "max_instance_id": 19244, "fg_fraction": 0.04227}
{"sample_id": "MitoEM-H_z0407", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 407, "image": "MitoEM-H/im/im0407.png", "mask": "MitoEM-H/mito-val-v2/seg0407.tif", "shape": [4096, 4096], "n_instances": 377, "max_instance_id": 19244, "fg_fraction": 0.042448}
{"sample_id": "MitoEM-H_z0408", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 408, "image": "MitoEM-H/im/im0408.png", "mask": "MitoEM-H/mito-val-v2/seg0408.tif", "shape": [4096, 4096], "n_instances": 385, "max_instance_id": 19244, "fg_fraction": 0.042577}
{"sample_id": "MitoEM-H_z0409", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 409, "image": "MitoEM-H/im/im0409.png", "mask": "MitoEM-H/mito-val-v2/seg0409.tif", "shape": [4096, 4096], "n_instances": 383, "max_instance_id": 19244, "fg_fraction": 0.042643}
{"sample_id": "MitoEM-H_z0410", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 410, "image": "MitoEM-H/im/im0410.png", "mask": "MitoEM-H/mito-val-v2/seg0410.tif", "shape": [4096, 4096], "n_instances": 386, "max_instance_id": 19244, "fg_fraction": 0.042697}
{"sample_id": "MitoEM-H_z0411", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 411, "image": "MitoEM-H/im/im0411.png", "mask": "MitoEM-H/mito-val-v2/seg0411.tif", "shape": [4096, 4096], "n_instances": 372, "max_instance_id": 19244, "fg_fraction": 0.042962}
{"sample_id": "MitoEM-H_z0412", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 412, "image": "MitoEM-H/im/im0412.png", "mask": "MitoEM-H/mito-val-v2/seg0412.tif", "shape": [4096, 4096], "n_instances": 370, "max_instance_id": 19244, "fg_fraction": 0.04267}
{"sample_id": "MitoEM-H_z0413", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 413, "image": "MitoEM-H/im/im0413.png", "mask": "MitoEM-H/mito-val-v2/seg0413.tif", "shape": [4096, 4096], "n_instances": 368, "max_instance_id": 19244, "fg_fraction": 0.042954}
{"sample_id": "MitoEM-H_z0414", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 414, "image": "MitoEM-H/im/im0414.png", "mask": "MitoEM-H/mito-val-v2/seg0414.tif", "shape": [4096, 4096], "n_instances": 373, "max_instance_id": 19244, "fg_fraction": 0.04308}
{"sample_id": "MitoEM-H_z0415", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 415, "image": "MitoEM-H/im/im0415.png", "mask": "MitoEM-H/mito-val-v2/seg0415.tif", "shape": [4096, 4096], "n_instances": 381, "max_instance_id": 19244, "fg_fraction": 0.04278}
{"sample_id": "MitoEM-H_z0416", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 416, "image": "MitoEM-H/im/im0416.png", "mask": "MitoEM-H/mito-val-v2/seg0416.tif", "shape": [4096, 4096], "n_instances": 383, "max_instance_id": 19244, "fg_fraction": 0.043217}
{"sample_id": "MitoEM-H_z0417", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 417, "image": "MitoEM-H/im/im0417.png", "mask": "MitoEM-H/mito-val-v2/seg0417.tif", "shape": [4096, 4096], "n_instances": 382, "max_instance_id": 19244, "fg_fraction": 0.043585}
{"sample_id": "MitoEM-H_z0418", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 418, "image": "MitoEM-H/im/im0418.png", "mask": "MitoEM-H/mito-val-v2/seg0418.tif", "shape": [4096, 4096], "n_instances": 380, "max_instance_id": 19244, "fg_fraction": 0.043562}
{"sample_id": "MitoEM-H_z0419", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 419, "image": "MitoEM-H/im/im0419.png", "mask": "MitoEM-H/mito-val-v2/seg0419.tif", "shape": [4096, 4096], "n_instances": 377, "max_instance_id": 19244, "fg_fraction": 0.043162}
{"sample_id": "MitoEM-H_z0420", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 420, "image": "MitoEM-H/im/im0420.png", "mask": "MitoEM-H/mito-val-v2/seg0420.tif", "shape": [4096, 4096], "n_instances": 384, "max_instance_id": 19244, "fg_fraction": 0.043276}
{"sample_id": "MitoEM-H_z0421", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 421, "image": "MitoEM-H/im/im0421.png", "mask": "MitoEM-H/mito-val-v2/seg0421.tif", "shape": [4096, 4096], "n_instances": 392, "max_instance_id": 19244, "fg_fraction": 0.043351}
{"sample_id": "MitoEM-H_z0422", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 422, "image": "MitoEM-H/im/im0422.png", "mask": "MitoEM-H/mito-val-v2/seg0422.tif", "shape": [4096, 4096], "n_instances": 389, "max_instance_id": 19244, "fg_fraction": 0.043251}
{"sample_id": "MitoEM-H_z0423", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 423, "image": "MitoEM-H/im/im0423.png", "mask": "MitoEM-H/mito-val-v2/seg0423.tif", "shape": [4096, 4096], "n_instances": 376, "max_instance_id": 19244, "fg_fraction": 0.042765}
{"sample_id": "MitoEM-H_z0424", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 424, "image": "MitoEM-H/im/im0424.png", "mask": "MitoEM-H/mito-val-v2/seg0424.tif", "shape": [4096, 4096], "n_instances": 378, "max_instance_id": 19244, "fg_fraction": 0.042578}
{"sample_id": "MitoEM-H_z0425", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 425, "image": "MitoEM-H/im/im0425.png", "mask": "MitoEM-H/mito-val-v2/seg0425.tif", "shape": [4096, 4096], "n_instances": 389, "max_instance_id": 19244, "fg_fraction": 0.042332}
{"sample_id": "MitoEM-H_z0426", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 426, "image": "MitoEM-H/im/im0426.png", "mask": "MitoEM-H/mito-val-v2/seg0426.tif", "shape": [4096, 4096], "n_instances": 386, "max_instance_id": 19244, "fg_fraction": 0.04214}
{"sample_id": "MitoEM-H_z0427", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 427, "image": "MitoEM-H/im/im0427.png", "mask": "MitoEM-H/mito-val-v2/seg0427.tif", "shape": [4096, 4096], "n_instances": 382, "max_instance_id": 19244, "fg_fraction": 0.041602}
{"sample_id": "MitoEM-H_z0428", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 428, "image": "MitoEM-H/im/im0428.png", "mask": "MitoEM-H/mito-val-v2/seg0428.tif", "shape": [4096, 4096], "n_instances": 371, "max_instance_id": 19244, "fg_fraction": 0.040862}
{"sample_id": "MitoEM-H_z0429", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 429, "image": "MitoEM-H/im/im0429.png", "mask": "MitoEM-H/mito-val-v2/seg0429.tif", "shape": [4096, 4096], "n_instances": 377, "max_instance_id": 19244, "fg_fraction": 0.040892}
{"sample_id": "MitoEM-H_z0430", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 430, "image": "MitoEM-H/im/im0430.png", "mask": "MitoEM-H/mito-val-v2/seg0430.tif", "shape": [4096, 4096], "n_instances": 378, "max_instance_id": 19244, "fg_fraction": 0.040693}
{"sample_id": "MitoEM-H_z0431", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 431, "image": "MitoEM-H/im/im0431.png", "mask": "MitoEM-H/mito-val-v2/seg0431.tif", "shape": [4096, 4096], "n_instances": 385, "max_instance_id": 19244, "fg_fraction": 0.04051}
{"sample_id": "MitoEM-H_z0432", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 432, "image": "MitoEM-H/im/im0432.png", "mask": "MitoEM-H/mito-val-v2/seg0432.tif", "shape": [4096, 4096], "n_instances": 375, "max_instance_id": 19244, "fg_fraction": 0.040579}
{"sample_id": "MitoEM-H_z0433", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 433, "image": "MitoEM-H/im/im0433.png", "mask": "MitoEM-H/mito-val-v2/seg0433.tif", "shape": [4096, 4096], "n_instances": 382, "max_instance_id": 19244, "fg_fraction": 0.041048}
{"sample_id": "MitoEM-H_z0434", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 434, "image": "MitoEM-H/im/im0434.png", "mask": "MitoEM-H/mito-val-v2/seg0434.tif", "shape": [4096, 4096], "n_instances": 378, "max_instance_id": 19244, "fg_fraction": 0.041051}
{"sample_id": "MitoEM-H_z0435", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 435, "image": "MitoEM-H/im/im0435.png", "mask": "MitoEM-H/mito-val-v2/seg0435.tif", "shape": [4096, 4096], "n_instances": 373, "max_instance_id": 19244, "fg_fraction": 0.041108}
{"sample_id": "MitoEM-H_z0436", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 436, "image": "MitoEM-H/im/im0436.png", "mask": "MitoEM-H/mito-val-v2/seg0436.tif", "shape": [4096, 4096], "n_instances": 382, "max_instance_id": 19244, "fg_fraction": 0.041355}
{"sample_id": "MitoEM-H_z0437", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 437, "image": "MitoEM-H/im/im0437.png", "mask": "MitoEM-H/mito-val-v2/seg0437.tif", "shape": [4096, 4096], "n_instances": 386, "max_instance_id": 19244, "fg_fraction": 0.041703}
{"sample_id": "MitoEM-H_z0438", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 438, "image": "MitoEM-H/im/im0438.png", "mask": "MitoEM-H/mito-val-v2/seg0438.tif", "shape": [4096, 4096], "n_instances": 383, "max_instance_id": 19244, "fg_fraction": 0.041524}
{"sample_id": "MitoEM-H_z0439", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 439, "image": "MitoEM-H/im/im0439.png", "mask": "MitoEM-H/mito-val-v2/seg0439.tif", "shape": [4096, 4096], "n_instances": 387, "max_instance_id": 19244, "fg_fraction": 0.041158}
{"sample_id": "MitoEM-H_z0440", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 440, "image": "MitoEM-H/im/im0440.png", "mask": "MitoEM-H/mito-val-v2/seg0440.tif", "shape": [4096, 4096], "n_instances": 388, "max_instance_id": 19244, "fg_fraction": 0.040739}
{"sample_id": "MitoEM-H_z0441", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 441, "image": "MitoEM-H/im/im0441.png", "mask": "MitoEM-H/mito-val-v2/seg0441.tif", "shape": [4096, 4096], "n_instances": 394, "max_instance_id": 19244, "fg_fraction": 0.040886}
{"sample_id": "MitoEM-H_z0442", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 442, "image": "MitoEM-H/im/im0442.png", "mask": "MitoEM-H/mito-val-v2/seg0442.tif", "shape": [4096, 4096], "n_instances": 393, "max_instance_id": 19103, "fg_fraction": 0.04083}
{"sample_id": "MitoEM-H_z0443", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 443, "image": "MitoEM-H/im/im0443.png", "mask": "MitoEM-H/mito-val-v2/seg0443.tif", "shape": [4096, 4096], "n_instances": 389, "max_instance_id": 19103, "fg_fraction": 0.041056}
{"sample_id": "MitoEM-H_z0444", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 444, "image": "MitoEM-H/im/im0444.png", "mask": "MitoEM-H/mito-val-v2/seg0444.tif", "shape": [4096, 4096], "n_instances": 397, "max_instance_id": 19103, "fg_fraction": 0.041304}
{"sample_id": "MitoEM-H_z0445", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 445, "image": "MitoEM-H/im/im0445.png", "mask": "MitoEM-H/mito-val-v2/seg0445.tif", "shape": [4096, 4096], "n_instances": 399, "max_instance_id": 19113, "fg_fraction": 0.041691}
{"sample_id": "MitoEM-H_z0446", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 446, "image": "MitoEM-H/im/im0446.png", "mask": "MitoEM-H/mito-val-v2/seg0446.tif", "shape": [4096, 4096], "n_instances": 402, "max_instance_id": 19113, "fg_fraction": 0.041902}
{"sample_id": "MitoEM-H_z0447", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 447, "image": "MitoEM-H/im/im0447.png", "mask": "MitoEM-H/mito-val-v2/seg0447.tif", "shape": [4096, 4096], "n_instances": 399, "max_instance_id": 19113, "fg_fraction": 0.041967}
{"sample_id": "MitoEM-H_z0448", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 448, "image": "MitoEM-H/im/im0448.png", "mask": "MitoEM-H/mito-val-v2/seg0448.tif", "shape": [4096, 4096], "n_instances": 406, "max_instance_id": 19113, "fg_fraction": 0.042368}
{"sample_id": "MitoEM-H_z0449", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 449, "image": "MitoEM-H/im/im0449.png", "mask": "MitoEM-H/mito-val-v2/seg0449.tif", "shape": [4096, 4096], "n_instances": 429, "max_instance_id": 19113, "fg_fraction": 0.042932}
{"sample_id": "MitoEM-H_z0450", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 450, "image": "MitoEM-H/im/im0450.png", "mask": "MitoEM-H/mito-val-v2/seg0450.tif", "shape": [4096, 4096], "n_instances": 436, "max_instance_id": 19113, "fg_fraction": 0.043254}
{"sample_id": "MitoEM-H_z0451", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 451, "image": "MitoEM-H/im/im0451.png", "mask": "MitoEM-H/mito-val-v2/seg0451.tif", "shape": [4096, 4096], "n_instances": 428, "max_instance_id": 19113, "fg_fraction": 0.043412}
{"sample_id": "MitoEM-H_z0452", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 452, "image": "MitoEM-H/im/im0452.png", "mask": "MitoEM-H/mito-val-v2/seg0452.tif", "shape": [4096, 4096], "n_instances": 435, "max_instance_id": 19113, "fg_fraction": 0.043159}
{"sample_id": "MitoEM-H_z0453", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 453, "image": "MitoEM-H/im/im0453.png", "mask": "MitoEM-H/mito-val-v2/seg0453.tif", "shape": [4096, 4096], "n_instances": 435, "max_instance_id": 19113, "fg_fraction": 0.043438}
{"sample_id": "MitoEM-H_z0454", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 454, "image": "MitoEM-H/im/im0454.png", "mask": "MitoEM-H/mito-val-v2/seg0454.tif", "shape": [4096, 4096], "n_instances": 432, "max_instance_id": 19113, "fg_fraction": 0.043456}
{"sample_id": "MitoEM-H_z0455", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 455, "image": "MitoEM-H/im/im0455.png", "mask": "MitoEM-H/mito-val-v2/seg0455.tif", "shape": [4096, 4096], "n_instances": 427, "max_instance_id": 19113, "fg_fraction": 0.043737}
{"sample_id": "MitoEM-H_z0456", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 456, "image": "MitoEM-H/im/im0456.png", "mask": "MitoEM-H/mito-val-v2/seg0456.tif", "shape": [4096, 4096], "n_instances": 431, "max_instance_id": 19113, "fg_fraction": 0.043201}
{"sample_id": "MitoEM-H_z0457", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 457, "image": "MitoEM-H/im/im0457.png", "mask": "MitoEM-H/mito-val-v2/seg0457.tif", "shape": [4096, 4096], "n_instances": 431, "max_instance_id": 19113, "fg_fraction": 0.043981}
{"sample_id": "MitoEM-H_z0458", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 458, "image": "MitoEM-H/im/im0458.png", "mask": "MitoEM-H/mito-val-v2/seg0458.tif", "shape": [4096, 4096], "n_instances": 429, "max_instance_id": 19113, "fg_fraction": 0.044396}
{"sample_id": "MitoEM-H_z0459", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 459, "image": "MitoEM-H/im/im0459.png", "mask": "MitoEM-H/mito-val-v2/seg0459.tif", "shape": [4096, 4096], "n_instances": 422, "max_instance_id": 19113, "fg_fraction": 0.044393}
{"sample_id": "MitoEM-H_z0460", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 460, "image": "MitoEM-H/im/im0460.png", "mask": "MitoEM-H/mito-val-v2/seg0460.tif", "shape": [4096, 4096], "n_instances": 415, "max_instance_id": 19113, "fg_fraction": 0.044079}
{"sample_id": "MitoEM-H_z0461", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 461, "image": "MitoEM-H/im/im0461.png", "mask": "MitoEM-H/mito-val-v2/seg0461.tif", "shape": [4096, 4096], "n_instances": 418, "max_instance_id": 19113, "fg_fraction": 0.044308}
{"sample_id": "MitoEM-H_z0462", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 462, "image": "MitoEM-H/im/im0462.png", "mask": "MitoEM-H/mito-val-v2/seg0462.tif", "shape": [4096, 4096], "n_instances": 417, "max_instance_id": 19113, "fg_fraction": 0.044305}
{"sample_id": "MitoEM-H_z0463", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 463, "image": "MitoEM-H/im/im0463.png", "mask": "MitoEM-H/mito-val-v2/seg0463.tif", "shape": [4096, 4096], "n_instances": 406, "max_instance_id": 19060, "fg_fraction": 0.044008}
{"sample_id": "MitoEM-H_z0464", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 464, "image": "MitoEM-H/im/im0464.png", "mask": "MitoEM-H/mito-val-v2/seg0464.tif", "shape": [4096, 4096], "n_instances": 401, "max_instance_id": 19060, "fg_fraction": 0.044067}
{"sample_id": "MitoEM-H_z0465", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 465, "image": "MitoEM-H/im/im0465.png", "mask": "MitoEM-H/mito-val-v2/seg0465.tif", "shape": [4096, 4096], "n_instances": 396, "max_instance_id": 19060, "fg_fraction": 0.043833}
{"sample_id": "MitoEM-H_z0466", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 466, "image": "MitoEM-H/im/im0466.png", "mask": "MitoEM-H/mito-val-v2/seg0466.tif", "shape": [4096, 4096], "n_instances": 393, "max_instance_id": 19060, "fg_fraction": 0.043532}
{"sample_id": "MitoEM-H_z0467", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 467, "image": "MitoEM-H/im/im0467.png", "mask": "MitoEM-H/mito-val-v2/seg0467.tif", "shape": [4096, 4096], "n_instances": 388, "max_instance_id": 19060, "fg_fraction": 0.042953}
{"sample_id": "MitoEM-H_z0468", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 468, "image": "MitoEM-H/im/im0468.png", "mask": "MitoEM-H/mito-val-v2/seg0468.tif", "shape": [4096, 4096], "n_instances": 395, "max_instance_id": 19060, "fg_fraction": 0.042224}
{"sample_id": "MitoEM-H_z0469", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 469, "image": "MitoEM-H/im/im0469.png", "mask": "MitoEM-H/mito-val-v2/seg0469.tif", "shape": [4096, 4096], "n_instances": 394, "max_instance_id": 19238, "fg_fraction": 0.042317}
{"sample_id": "MitoEM-H_z0470", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 470, "image": "MitoEM-H/im/im0470.png", "mask": "MitoEM-H/mito-val-v2/seg0470.tif", "shape": [4096, 4096], "n_instances": 387, "max_instance_id": 19238, "fg_fraction": 0.042411}
{"sample_id": "MitoEM-H_z0471", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 471, "image": "MitoEM-H/im/im0471.png", "mask": "MitoEM-H/mito-val-v2/seg0471.tif", "shape": [4096, 4096], "n_instances": 380, "max_instance_id": 19238, "fg_fraction": 0.042395}
{"sample_id": "MitoEM-H_z0472", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 472, "image": "MitoEM-H/im/im0472.png", "mask": "MitoEM-H/mito-val-v2/seg0472.tif", "shape": [4096, 4096], "n_instances": 383, "max_instance_id": 19238, "fg_fraction": 0.042059}
{"sample_id": "MitoEM-H_z0473", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 473, "image": "MitoEM-H/im/im0473.png", "mask": "MitoEM-H/mito-val-v2/seg0473.tif", "shape": [4096, 4096], "n_instances": 391, "max_instance_id": 19238, "fg_fraction": 0.04189}
{"sample_id": "MitoEM-H_z0474", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 474, "image": "MitoEM-H/im/im0474.png", "mask": "MitoEM-H/mito-val-v2/seg0474.tif", "shape": [4096, 4096], "n_instances": 384, "max_instance_id": 19238, "fg_fraction": 0.042274}
{"sample_id": "MitoEM-H_z0475", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 475, "image": "MitoEM-H/im/im0475.png", "mask": "MitoEM-H/mito-val-v2/seg0475.tif", "shape": [4096, 4096], "n_instances": 376, "max_instance_id": 19238, "fg_fraction": 0.042009}
{"sample_id": "MitoEM-H_z0476", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 476, "image": "MitoEM-H/im/im0476.png", "mask": "MitoEM-H/mito-val-v2/seg0476.tif", "shape": [4096, 4096], "n_instances": 374, "max_instance_id": 19238, "fg_fraction": 0.0418}
{"sample_id": "MitoEM-H_z0477", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 477, "image": "MitoEM-H/im/im0477.png", "mask": "MitoEM-H/mito-val-v2/seg0477.tif", "shape": [4096, 4096], "n_instances": 384, "max_instance_id": 19238, "fg_fraction": 0.042205}
{"sample_id": "MitoEM-H_z0478", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 478, "image": "MitoEM-H/im/im0478.png", "mask": "MitoEM-H/mito-val-v2/seg0478.tif", "shape": [4096, 4096], "n_instances": 382, "max_instance_id": 19238, "fg_fraction": 0.04249}
{"sample_id": "MitoEM-H_z0479", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 479, "image": "MitoEM-H/im/im0479.png", "mask": "MitoEM-H/mito-val-v2/seg0479.tif", "shape": [4096, 4096], "n_instances": 386, "max_instance_id": 19238, "fg_fraction": 0.042836}
{"sample_id": "MitoEM-H_z0480", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 480, "image": "MitoEM-H/im/im0480.png", "mask": "MitoEM-H/mito-val-v2/seg0480.tif", "shape": [4096, 4096], "n_instances": 392, "max_instance_id": 19239, "fg_fraction": 0.043142}
{"sample_id": "MitoEM-H_z0481", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 481, "image": "MitoEM-H/im/im0481.png", "mask": "MitoEM-H/mito-val-v2/seg0481.tif", "shape": [4096, 4096], "n_instances": 392, "max_instance_id": 19239, "fg_fraction": 0.043562}
{"sample_id": "MitoEM-H_z0482", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 482, "image": "MitoEM-H/im/im0482.png", "mask": "MitoEM-H/mito-val-v2/seg0482.tif", "shape": [4096, 4096], "n_instances": 395, "max_instance_id": 19239, "fg_fraction": 0.043818}
{"sample_id": "MitoEM-H_z0483", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 483, "image": "MitoEM-H/im/im0483.png", "mask": "MitoEM-H/mito-val-v2/seg0483.tif", "shape": [4096, 4096], "n_instances": 391, "max_instance_id": 19239, "fg_fraction": 0.044131}
{"sample_id": "MitoEM-H_z0484", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 484, "image": "MitoEM-H/im/im0484.png", "mask": "MitoEM-H/mito-val-v2/seg0484.tif", "shape": [4096, 4096], "n_instances": 399, "max_instance_id": 19239, "fg_fraction": 0.044742}
{"sample_id": "MitoEM-H_z0485", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 485, "image": "MitoEM-H/im/im0485.png", "mask": "MitoEM-H/mito-val-v2/seg0485.tif", "shape": [4096, 4096], "n_instances": 401, "max_instance_id": 19239, "fg_fraction": 0.045342}
{"sample_id": "MitoEM-H_z0486", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 486, "image": "MitoEM-H/im/im0486.png", "mask": "MitoEM-H/mito-val-v2/seg0486.tif", "shape": [4096, 4096], "n_instances": 398, "max_instance_id": 19239, "fg_fraction": 0.04564}
{"sample_id": "MitoEM-H_z0487", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 487, "image": "MitoEM-H/im/im0487.png", "mask": "MitoEM-H/mito-val-v2/seg0487.tif", "shape": [4096, 4096], "n_instances": 398, "max_instance_id": 19239, "fg_fraction": 0.046081}
{"sample_id": "MitoEM-H_z0488", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 488, "image": "MitoEM-H/im/im0488.png", "mask": "MitoEM-H/mito-val-v2/seg0488.tif", "shape": [4096, 4096], "n_instances": 408, "max_instance_id": 19239, "fg_fraction": 0.046808}
{"sample_id": "MitoEM-H_z0489", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 489, "image": "MitoEM-H/im/im0489.png", "mask": "MitoEM-H/mito-val-v2/seg0489.tif", "shape": [4096, 4096], "n_instances": 413, "max_instance_id": 19239, "fg_fraction": 0.046851}
{"sample_id": "MitoEM-H_z0490", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 490, "image": "MitoEM-H/im/im0490.png", "mask": "MitoEM-H/mito-val-v2/seg0490.tif", "shape": [4096, 4096], "n_instances": 416, "max_instance_id": 19241, "fg_fraction": 0.046756}
{"sample_id": "MitoEM-H_z0491", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 491, "image": "MitoEM-H/im/im0491.png", "mask": "MitoEM-H/mito-val-v2/seg0491.tif", "shape": [4096, 4096], "n_instances": 410, "max_instance_id": 19241, "fg_fraction": 0.046178}
{"sample_id": "MitoEM-H_z0492", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 492, "image": "MitoEM-H/im/im0492.png", "mask": "MitoEM-H/mito-val-v2/seg0492.tif", "shape": [4096, 4096], "n_instances": 412, "max_instance_id": 19241, "fg_fraction": 0.045659}
{"sample_id": "MitoEM-H_z0493", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 493, "image": "MitoEM-H/im/im0493.png", "mask": "MitoEM-H/mito-val-v2/seg0493.tif", "shape": [4096, 4096], "n_instances": 418, "max_instance_id": 19241, "fg_fraction": 0.045263}
{"sample_id": "MitoEM-H_z0494", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 494, "image": "MitoEM-H/im/im0494.png", "mask": "MitoEM-H/mito-val-v2/seg0494.tif", "shape": [4096, 4096], "n_instances": 419, "max_instance_id": 19243, "fg_fraction": 0.044462}
{"sample_id": "MitoEM-H_z0495", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 495, "image": "MitoEM-H/im/im0495.png", "mask": "MitoEM-H/mito-val-v2/seg0495.tif", "shape": [4096, 4096], "n_instances": 418, "max_instance_id": 19243, "fg_fraction": 0.043657}
{"sample_id": "MitoEM-H_z0496", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 496, "image": "MitoEM-H/im/im0496.png", "mask": "MitoEM-H/mito-val-v2/seg0496.tif", "shape": [4096, 4096], "n_instances": 407, "max_instance_id": 19243, "fg_fraction": 0.043348}
{"sample_id": "MitoEM-H_z0497", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 497, "image": "MitoEM-H/im/im0497.png", "mask": "MitoEM-H/mito-val-v2/seg0497.tif", "shape": [4096, 4096], "n_instances": 405, "max_instance_id": 19243, "fg_fraction": 0.043252}
{"sample_id": "MitoEM-H_z0498", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 498, "image": "MitoEM-H/im/im0498.png", "mask": "MitoEM-H/mito-val-v2/seg0498.tif", "shape": [4096, 4096], "n_instances": 408, "max_instance_id": 19243, "fg_fraction": 0.042962}
{"sample_id": "MitoEM-H_z0499", "subset": "MitoEM-H", "organism": "human", "split": "val", "z": 499, "image": "MitoEM-H/im/im0499.png", "mask": "MitoEM-H/mito-val-v2/seg0499.tif", "shape": [4096, 4096], "n_instances": 413, "max_instance_id": 19243, "fg_fraction": 0.042968}
{"sample_id": "MitoEM-R_z0400", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 400, "image": "MitoEM-R/im/im0400.png", "mask": "MitoEM-R/mito-val-v2/seg0400.tif", "shape": [4096, 4096], "n_instances": 334, "max_instance_id": 10837, "fg_fraction": 0.06142}
{"sample_id": "MitoEM-R_z0401", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 401, "image": "MitoEM-R/im/im0401.png", "mask": "MitoEM-R/mito-val-v2/seg0401.tif", "shape": [4096, 4096], "n_instances": 338, "max_instance_id": 10837, "fg_fraction": 0.060899}
{"sample_id": "MitoEM-R_z0402", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 402, "image": "MitoEM-R/im/im0402.png", "mask": "MitoEM-R/mito-val-v2/seg0402.tif", "shape": [4096, 4096], "n_instances": 337, "max_instance_id": 10837, "fg_fraction": 0.059863}
{"sample_id": "MitoEM-R_z0403", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 403, "image": "MitoEM-R/im/im0403.png", "mask": "MitoEM-R/mito-val-v2/seg0403.tif", "shape": [4096, 4096], "n_instances": 338, "max_instance_id": 10837, "fg_fraction": 0.059039}
{"sample_id": "MitoEM-R_z0404", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 404, "image": "MitoEM-R/im/im0404.png", "mask": "MitoEM-R/mito-val-v2/seg0404.tif", "shape": [4096, 4096], "n_instances": 336, "max_instance_id": 10837, "fg_fraction": 0.058176}
{"sample_id": "MitoEM-R_z0405", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 405, "image": "MitoEM-R/im/im0405.png", "mask": "MitoEM-R/mito-val-v2/seg0405.tif", "shape": [4096, 4096], "n_instances": 337, "max_instance_id": 10837, "fg_fraction": 0.057462}
{"sample_id": "MitoEM-R_z0406", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 406, "image": "MitoEM-R/im/im0406.png", "mask": "MitoEM-R/mito-val-v2/seg0406.tif", "shape": [4096, 4096], "n_instances": 330, "max_instance_id": 10837, "fg_fraction": 0.057138}
{"sample_id": "MitoEM-R_z0407", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 407, "image": "MitoEM-R/im/im0407.png", "mask": "MitoEM-R/mito-val-v2/seg0407.tif", "shape": [4096, 4096], "n_instances": 327, "max_instance_id": 10837, "fg_fraction": 0.056558}
{"sample_id": "MitoEM-R_z0408", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 408, "image": "MitoEM-R/im/im0408.png", "mask": "MitoEM-R/mito-val-v2/seg0408.tif", "shape": [4096, 4096], "n_instances": 330, "max_instance_id": 10837, "fg_fraction": 0.056932}
{"sample_id": "MitoEM-R_z0409", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 409, "image": "MitoEM-R/im/im0409.png", "mask": "MitoEM-R/mito-val-v2/seg0409.tif", "shape": [4096, 4096], "n_instances": 335, "max_instance_id": 10837, "fg_fraction": 0.056664}
{"sample_id": "MitoEM-R_z0410", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 410, "image": "MitoEM-R/im/im0410.png", "mask": "MitoEM-R/mito-val-v2/seg0410.tif", "shape": [4096, 4096], "n_instances": 338, "max_instance_id": 10837, "fg_fraction": 0.056363}
{"sample_id": "MitoEM-R_z0411", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 411, "image": "MitoEM-R/im/im0411.png", "mask": "MitoEM-R/mito-val-v2/seg0411.tif", "shape": [4096, 4096], "n_instances": 335, "max_instance_id": 10837, "fg_fraction": 0.055819}
{"sample_id": "MitoEM-R_z0412", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 412, "image": "MitoEM-R/im/im0412.png", "mask": "MitoEM-R/mito-val-v2/seg0412.tif", "shape": [4096, 4096], "n_instances": 326, "max_instance_id": 10837, "fg_fraction": 0.055261}
{"sample_id": "MitoEM-R_z0413", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 413, "image": "MitoEM-R/im/im0413.png", "mask": "MitoEM-R/mito-val-v2/seg0413.tif", "shape": [4096, 4096], "n_instances": 328, "max_instance_id": 10837, "fg_fraction": 0.055213}
{"sample_id": "MitoEM-R_z0414", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 414, "image": "MitoEM-R/im/im0414.png", "mask": "MitoEM-R/mito-val-v2/seg0414.tif", "shape": [4096, 4096], "n_instances": 331, "max_instance_id": 10837, "fg_fraction": 0.055719}
{"sample_id": "MitoEM-R_z0415", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 415, "image": "MitoEM-R/im/im0415.png", "mask": "MitoEM-R/mito-val-v2/seg0415.tif", "shape": [4096, 4096], "n_instances": 328, "max_instance_id": 10837, "fg_fraction": 0.056251}
{"sample_id": "MitoEM-R_z0416", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 416, "image": "MitoEM-R/im/im0416.png", "mask": "MitoEM-R/mito-val-v2/seg0416.tif", "shape": [4096, 4096], "n_instances": 327, "max_instance_id": 10837, "fg_fraction": 0.057096}
{"sample_id": "MitoEM-R_z0417", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 417, "image": "MitoEM-R/im/im0417.png", "mask": "MitoEM-R/mito-val-v2/seg0417.tif", "shape": [4096, 4096], "n_instances": 330, "max_instance_id": 10837, "fg_fraction": 0.057936}
{"sample_id": "MitoEM-R_z0418", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 418, "image": "MitoEM-R/im/im0418.png", "mask": "MitoEM-R/mito-val-v2/seg0418.tif", "shape": [4096, 4096], "n_instances": 323, "max_instance_id": 10837, "fg_fraction": 0.058579}
{"sample_id": "MitoEM-R_z0419", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 419, "image": "MitoEM-R/im/im0419.png", "mask": "MitoEM-R/mito-val-v2/seg0419.tif", "shape": [4096, 4096], "n_instances": 334, "max_instance_id": 10837, "fg_fraction": 0.059684}
{"sample_id": "MitoEM-R_z0420", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 420, "image": "MitoEM-R/im/im0420.png", "mask": "MitoEM-R/mito-val-v2/seg0420.tif", "shape": [4096, 4096], "n_instances": 347, "max_instance_id": 10837, "fg_fraction": 0.061011}
{"sample_id": "MitoEM-R_z0421", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 421, "image": "MitoEM-R/im/im0421.png", "mask": "MitoEM-R/mito-val-v2/seg0421.tif", "shape": [4096, 4096], "n_instances": 348, "max_instance_id": 10837, "fg_fraction": 0.061668}
{"sample_id": "MitoEM-R_z0422", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 422, "image": "MitoEM-R/im/im0422.png", "mask": "MitoEM-R/mito-val-v2/seg0422.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10837, "fg_fraction": 0.062294}
{"sample_id": "MitoEM-R_z0423", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 423, "image": "MitoEM-R/im/im0423.png", "mask": "MitoEM-R/mito-val-v2/seg0423.tif", "shape": [4096, 4096], "n_instances": 354, "max_instance_id": 10837, "fg_fraction": 0.063163}
{"sample_id": "MitoEM-R_z0424", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 424, "image": "MitoEM-R/im/im0424.png", "mask": "MitoEM-R/mito-val-v2/seg0424.tif", "shape": [4096, 4096], "n_instances": 354, "max_instance_id": 10837, "fg_fraction": 0.063156}
{"sample_id": "MitoEM-R_z0425", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 425, "image": "MitoEM-R/im/im0425.png", "mask": "MitoEM-R/mito-val-v2/seg0425.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10837, "fg_fraction": 0.063744}
{"sample_id": "MitoEM-R_z0426", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 426, "image": "MitoEM-R/im/im0426.png", "mask": "MitoEM-R/mito-val-v2/seg0426.tif", "shape": [4096, 4096], "n_instances": 350, "max_instance_id": 10837, "fg_fraction": 0.062876}
{"sample_id": "MitoEM-R_z0427", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 427, "image": "MitoEM-R/im/im0427.png", "mask": "MitoEM-R/mito-val-v2/seg0427.tif", "shape": [4096, 4096], "n_instances": 347, "max_instance_id": 10837, "fg_fraction": 0.062808}
{"sample_id": "MitoEM-R_z0428", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 428, "image": "MitoEM-R/im/im0428.png", "mask": "MitoEM-R/mito-val-v2/seg0428.tif", "shape": [4096, 4096], "n_instances": 350, "max_instance_id": 10837, "fg_fraction": 0.063765}
{"sample_id": "MitoEM-R_z0429", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 429, "image": "MitoEM-R/im/im0429.png", "mask": "MitoEM-R/mito-val-v2/seg0429.tif", "shape": [4096, 4096], "n_instances": 358, "max_instance_id": 10837, "fg_fraction": 0.064356}
{"sample_id": "MitoEM-R_z0430", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 430, "image": "MitoEM-R/im/im0430.png", "mask": "MitoEM-R/mito-val-v2/seg0430.tif", "shape": [4096, 4096], "n_instances": 364, "max_instance_id": 10837, "fg_fraction": 0.064846}
{"sample_id": "MitoEM-R_z0431", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 431, "image": "MitoEM-R/im/im0431.png", "mask": "MitoEM-R/mito-val-v2/seg0431.tif", "shape": [4096, 4096], "n_instances": 364, "max_instance_id": 10837, "fg_fraction": 0.065375}
{"sample_id": "MitoEM-R_z0432", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 432, "image": "MitoEM-R/im/im0432.png", "mask": "MitoEM-R/mito-val-v2/seg0432.tif", "shape": [4096, 4096], "n_instances": 362, "max_instance_id": 10837, "fg_fraction": 0.065966}
{"sample_id": "MitoEM-R_z0433", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 433, "image": "MitoEM-R/im/im0433.png", "mask": "MitoEM-R/mito-val-v2/seg0433.tif", "shape": [4096, 4096], "n_instances": 365, "max_instance_id": 10837, "fg_fraction": 0.06625}
{"sample_id": "MitoEM-R_z0434", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 434, "image": "MitoEM-R/im/im0434.png", "mask": "MitoEM-R/mito-val-v2/seg0434.tif", "shape": [4096, 4096], "n_instances": 365, "max_instance_id": 10837, "fg_fraction": 0.066439}
{"sample_id": "MitoEM-R_z0435", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 435, "image": "MitoEM-R/im/im0435.png", "mask": "MitoEM-R/mito-val-v2/seg0435.tif", "shape": [4096, 4096], "n_instances": 364, "max_instance_id": 10837, "fg_fraction": 0.065834}
{"sample_id": "MitoEM-R_z0436", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 436, "image": "MitoEM-R/im/im0436.png", "mask": "MitoEM-R/mito-val-v2/seg0436.tif", "shape": [4096, 4096], "n_instances": 359, "max_instance_id": 10837, "fg_fraction": 0.066566}
{"sample_id": "MitoEM-R_z0437", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 437, "image": "MitoEM-R/im/im0437.png", "mask": "MitoEM-R/mito-val-v2/seg0437.tif", "shape": [4096, 4096], "n_instances": 359, "max_instance_id": 10837, "fg_fraction": 0.065915}
{"sample_id": "MitoEM-R_z0438", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 438, "image": "MitoEM-R/im/im0438.png", "mask": "MitoEM-R/mito-val-v2/seg0438.tif", "shape": [4096, 4096], "n_instances": 357, "max_instance_id": 10837, "fg_fraction": 0.064741}
{"sample_id": "MitoEM-R_z0439", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 439, "image": "MitoEM-R/im/im0439.png", "mask": "MitoEM-R/mito-val-v2/seg0439.tif", "shape": [4096, 4096], "n_instances": 355, "max_instance_id": 10837, "fg_fraction": 0.064989}
{"sample_id": "MitoEM-R_z0440", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 440, "image": "MitoEM-R/im/im0440.png", "mask": "MitoEM-R/mito-val-v2/seg0440.tif", "shape": [4096, 4096], "n_instances": 354, "max_instance_id": 10837, "fg_fraction": 0.064923}
{"sample_id": "MitoEM-R_z0441", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 441, "image": "MitoEM-R/im/im0441.png", "mask": "MitoEM-R/mito-val-v2/seg0441.tif", "shape": [4096, 4096], "n_instances": 359, "max_instance_id": 10837, "fg_fraction": 0.065025}
{"sample_id": "MitoEM-R_z0442", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 442, "image": "MitoEM-R/im/im0442.png", "mask": "MitoEM-R/mito-val-v2/seg0442.tif", "shape": [4096, 4096], "n_instances": 357, "max_instance_id": 10837, "fg_fraction": 0.064995}
{"sample_id": "MitoEM-R_z0443", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 443, "image": "MitoEM-R/im/im0443.png", "mask": "MitoEM-R/mito-val-v2/seg0443.tif", "shape": [4096, 4096], "n_instances": 359, "max_instance_id": 10837, "fg_fraction": 0.065043}
{"sample_id": "MitoEM-R_z0444", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 444, "image": "MitoEM-R/im/im0444.png", "mask": "MitoEM-R/mito-val-v2/seg0444.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10837, "fg_fraction": 0.064692}
{"sample_id": "MitoEM-R_z0445", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 445, "image": "MitoEM-R/im/im0445.png", "mask": "MitoEM-R/mito-val-v2/seg0445.tif", "shape": [4096, 4096], "n_instances": 351, "max_instance_id": 10837, "fg_fraction": 0.065393}
{"sample_id": "MitoEM-R_z0446", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 446, "image": "MitoEM-R/im/im0446.png", "mask": "MitoEM-R/mito-val-v2/seg0446.tif", "shape": [4096, 4096], "n_instances": 351, "max_instance_id": 10837, "fg_fraction": 0.065614}
{"sample_id": "MitoEM-R_z0447", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 447, "image": "MitoEM-R/im/im0447.png", "mask": "MitoEM-R/mito-val-v2/seg0447.tif", "shape": [4096, 4096], "n_instances": 348, "max_instance_id": 10837, "fg_fraction": 0.065863}
{"sample_id": "MitoEM-R_z0448", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 448, "image": "MitoEM-R/im/im0448.png", "mask": "MitoEM-R/mito-val-v2/seg0448.tif", "shape": [4096, 4096], "n_instances": 347, "max_instance_id": 10837, "fg_fraction": 0.065795}
{"sample_id": "MitoEM-R_z0449", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 449, "image": "MitoEM-R/im/im0449.png", "mask": "MitoEM-R/mito-val-v2/seg0449.tif", "shape": [4096, 4096], "n_instances": 340, "max_instance_id": 10837, "fg_fraction": 0.066094}
{"sample_id": "MitoEM-R_z0450", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 450, "image": "MitoEM-R/im/im0450.png", "mask": "MitoEM-R/mito-val-v2/seg0450.tif", "shape": [4096, 4096], "n_instances": 349, "max_instance_id": 10837, "fg_fraction": 0.066374}
{"sample_id": "MitoEM-R_z0451", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 451, "image": "MitoEM-R/im/im0451.png", "mask": "MitoEM-R/mito-val-v2/seg0451.tif", "shape": [4096, 4096], "n_instances": 352, "max_instance_id": 10837, "fg_fraction": 0.066062}
{"sample_id": "MitoEM-R_z0452", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 452, "image": "MitoEM-R/im/im0452.png", "mask": "MitoEM-R/mito-val-v2/seg0452.tif", "shape": [4096, 4096], "n_instances": 340, "max_instance_id": 10837, "fg_fraction": 0.065562}
{"sample_id": "MitoEM-R_z0453", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 453, "image": "MitoEM-R/im/im0453.png", "mask": "MitoEM-R/mito-val-v2/seg0453.tif", "shape": [4096, 4096], "n_instances": 341, "max_instance_id": 10837, "fg_fraction": 0.064864}
{"sample_id": "MitoEM-R_z0454", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 454, "image": "MitoEM-R/im/im0454.png", "mask": "MitoEM-R/mito-val-v2/seg0454.tif", "shape": [4096, 4096], "n_instances": 346, "max_instance_id": 10837, "fg_fraction": 0.063944}
{"sample_id": "MitoEM-R_z0455", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 455, "image": "MitoEM-R/im/im0455.png", "mask": "MitoEM-R/mito-val-v2/seg0455.tif", "shape": [4096, 4096], "n_instances": 349, "max_instance_id": 10837, "fg_fraction": 0.062992}
{"sample_id": "MitoEM-R_z0456", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 456, "image": "MitoEM-R/im/im0456.png", "mask": "MitoEM-R/mito-val-v2/seg0456.tif", "shape": [4096, 4096], "n_instances": 346, "max_instance_id": 10837, "fg_fraction": 0.063042}
{"sample_id": "MitoEM-R_z0457", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 457, "image": "MitoEM-R/im/im0457.png", "mask": "MitoEM-R/mito-val-v2/seg0457.tif", "shape": [4096, 4096], "n_instances": 341, "max_instance_id": 10837, "fg_fraction": 0.062842}
{"sample_id": "MitoEM-R_z0458", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 458, "image": "MitoEM-R/im/im0458.png", "mask": "MitoEM-R/mito-val-v2/seg0458.tif", "shape": [4096, 4096], "n_instances": 342, "max_instance_id": 10837, "fg_fraction": 0.062768}
{"sample_id": "MitoEM-R_z0459", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 459, "image": "MitoEM-R/im/im0459.png", "mask": "MitoEM-R/mito-val-v2/seg0459.tif", "shape": [4096, 4096], "n_instances": 342, "max_instance_id": 10837, "fg_fraction": 0.06275}
{"sample_id": "MitoEM-R_z0460", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 460, "image": "MitoEM-R/im/im0460.png", "mask": "MitoEM-R/mito-val-v2/seg0460.tif", "shape": [4096, 4096], "n_instances": 343, "max_instance_id": 10837, "fg_fraction": 0.061901}
{"sample_id": "MitoEM-R_z0461", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 461, "image": "MitoEM-R/im/im0461.png", "mask": "MitoEM-R/mito-val-v2/seg0461.tif", "shape": [4096, 4096], "n_instances": 335, "max_instance_id": 10837, "fg_fraction": 0.061637}
{"sample_id": "MitoEM-R_z0462", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 462, "image": "MitoEM-R/im/im0462.png", "mask": "MitoEM-R/mito-val-v2/seg0462.tif", "shape": [4096, 4096], "n_instances": 338, "max_instance_id": 10837, "fg_fraction": 0.061978}
{"sample_id": "MitoEM-R_z0463", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 463, "image": "MitoEM-R/im/im0463.png", "mask": "MitoEM-R/mito-val-v2/seg0463.tif", "shape": [4096, 4096], "n_instances": 341, "max_instance_id": 10837, "fg_fraction": 0.062394}
{"sample_id": "MitoEM-R_z0464", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 464, "image": "MitoEM-R/im/im0464.png", "mask": "MitoEM-R/mito-val-v2/seg0464.tif", "shape": [4096, 4096], "n_instances": 336, "max_instance_id": 10837, "fg_fraction": 0.062413}
{"sample_id": "MitoEM-R_z0465", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 465, "image": "MitoEM-R/im/im0465.png", "mask": "MitoEM-R/mito-val-v2/seg0465.tif", "shape": [4096, 4096], "n_instances": 334, "max_instance_id": 10837, "fg_fraction": 0.063516}
{"sample_id": "MitoEM-R_z0466", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 466, "image": "MitoEM-R/im/im0466.png", "mask": "MitoEM-R/mito-val-v2/seg0466.tif", "shape": [4096, 4096], "n_instances": 336, "max_instance_id": 10837, "fg_fraction": 0.063683}
{"sample_id": "MitoEM-R_z0467", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 467, "image": "MitoEM-R/im/im0467.png", "mask": "MitoEM-R/mito-val-v2/seg0467.tif", "shape": [4096, 4096], "n_instances": 337, "max_instance_id": 10837, "fg_fraction": 0.063422}
{"sample_id": "MitoEM-R_z0468", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 468, "image": "MitoEM-R/im/im0468.png", "mask": "MitoEM-R/mito-val-v2/seg0468.tif", "shape": [4096, 4096], "n_instances": 338, "max_instance_id": 10836, "fg_fraction": 0.06305}
{"sample_id": "MitoEM-R_z0469", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 469, "image": "MitoEM-R/im/im0469.png", "mask": "MitoEM-R/mito-val-v2/seg0469.tif", "shape": [4096, 4096], "n_instances": 344, "max_instance_id": 10836, "fg_fraction": 0.063079}
{"sample_id": "MitoEM-R_z0470", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 470, "image": "MitoEM-R/im/im0470.png", "mask": "MitoEM-R/mito-val-v2/seg0470.tif", "shape": [4096, 4096], "n_instances": 349, "max_instance_id": 10837, "fg_fraction": 0.06244}
{"sample_id": "MitoEM-R_z0471", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 471, "image": "MitoEM-R/im/im0471.png", "mask": "MitoEM-R/mito-val-v2/seg0471.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10836, "fg_fraction": 0.062057}
{"sample_id": "MitoEM-R_z0472", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 472, "image": "MitoEM-R/im/im0472.png", "mask": "MitoEM-R/mito-val-v2/seg0472.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10836, "fg_fraction": 0.062285}
{"sample_id": "MitoEM-R_z0473", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 473, "image": "MitoEM-R/im/im0473.png", "mask": "MitoEM-R/mito-val-v2/seg0473.tif", "shape": [4096, 4096], "n_instances": 359, "max_instance_id": 10836, "fg_fraction": 0.062195}
{"sample_id": "MitoEM-R_z0474", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 474, "image": "MitoEM-R/im/im0474.png", "mask": "MitoEM-R/mito-val-v2/seg0474.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10836, "fg_fraction": 0.062199}
{"sample_id": "MitoEM-R_z0475", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 475, "image": "MitoEM-R/im/im0475.png", "mask": "MitoEM-R/mito-val-v2/seg0475.tif", "shape": [4096, 4096], "n_instances": 354, "max_instance_id": 10836, "fg_fraction": 0.063239}
{"sample_id": "MitoEM-R_z0476", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 476, "image": "MitoEM-R/im/im0476.png", "mask": "MitoEM-R/mito-val-v2/seg0476.tif", "shape": [4096, 4096], "n_instances": 357, "max_instance_id": 10836, "fg_fraction": 0.063641}
{"sample_id": "MitoEM-R_z0477", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 477, "image": "MitoEM-R/im/im0477.png", "mask": "MitoEM-R/mito-val-v2/seg0477.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10836, "fg_fraction": 0.06381}
{"sample_id": "MitoEM-R_z0478", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 478, "image": "MitoEM-R/im/im0478.png", "mask": "MitoEM-R/mito-val-v2/seg0478.tif", "shape": [4096, 4096], "n_instances": 355, "max_instance_id": 10836, "fg_fraction": 0.063973}
{"sample_id": "MitoEM-R_z0479", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 479, "image": "MitoEM-R/im/im0479.png", "mask": "MitoEM-R/mito-val-v2/seg0479.tif", "shape": [4096, 4096], "n_instances": 368, "max_instance_id": 10836, "fg_fraction": 0.0639}
{"sample_id": "MitoEM-R_z0480", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 480, "image": "MitoEM-R/im/im0480.png", "mask": "MitoEM-R/mito-val-v2/seg0480.tif", "shape": [4096, 4096], "n_instances": 368, "max_instance_id": 10836, "fg_fraction": 0.063871}
{"sample_id": "MitoEM-R_z0481", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 481, "image": "MitoEM-R/im/im0481.png", "mask": "MitoEM-R/mito-val-v2/seg0481.tif", "shape": [4096, 4096], "n_instances": 358, "max_instance_id": 10836, "fg_fraction": 0.064397}
{"sample_id": "MitoEM-R_z0482", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 482, "image": "MitoEM-R/im/im0482.png", "mask": "MitoEM-R/mito-val-v2/seg0482.tif", "shape": [4096, 4096], "n_instances": 354, "max_instance_id": 10836, "fg_fraction": 0.064509}
{"sample_id": "MitoEM-R_z0483", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 483, "image": "MitoEM-R/im/im0483.png", "mask": "MitoEM-R/mito-val-v2/seg0483.tif", "shape": [4096, 4096], "n_instances": 353, "max_instance_id": 10836, "fg_fraction": 0.064607}
{"sample_id": "MitoEM-R_z0484", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 484, "image": "MitoEM-R/im/im0484.png", "mask": "MitoEM-R/mito-val-v2/seg0484.tif", "shape": [4096, 4096], "n_instances": 356, "max_instance_id": 10836, "fg_fraction": 0.064237}
{"sample_id": "MitoEM-R_z0485", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 485, "image": "MitoEM-R/im/im0485.png", "mask": "MitoEM-R/mito-val-v2/seg0485.tif", "shape": [4096, 4096], "n_instances": 351, "max_instance_id": 10836, "fg_fraction": 0.064154}
{"sample_id": "MitoEM-R_z0486", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 486, "image": "MitoEM-R/im/im0486.png", "mask": "MitoEM-R/mito-val-v2/seg0486.tif", "shape": [4096, 4096], "n_instances": 349, "max_instance_id": 10836, "fg_fraction": 0.063275}
{"sample_id": "MitoEM-R_z0487", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 487, "image": "MitoEM-R/im/im0487.png", "mask": "MitoEM-R/mito-val-v2/seg0487.tif", "shape": [4096, 4096], "n_instances": 349, "max_instance_id": 10836, "fg_fraction": 0.063318}
{"sample_id": "MitoEM-R_z0488", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 488, "image": "MitoEM-R/im/im0488.png", "mask": "MitoEM-R/mito-val-v2/seg0488.tif", "shape": [4096, 4096], "n_instances": 335, "max_instance_id": 10836, "fg_fraction": 0.062384}
{"sample_id": "MitoEM-R_z0489", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 489, "image": "MitoEM-R/im/im0489.png", "mask": "MitoEM-R/mito-val-v2/seg0489.tif", "shape": [4096, 4096], "n_instances": 335, "max_instance_id": 10836, "fg_fraction": 0.061869}
{"sample_id": "MitoEM-R_z0490", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 490, "image": "MitoEM-R/im/im0490.png", "mask": "MitoEM-R/mito-val-v2/seg0490.tif", "shape": [4096, 4096], "n_instances": 337, "max_instance_id": 10836, "fg_fraction": 0.061215}
{"sample_id": "MitoEM-R_z0491", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 491, "image": "MitoEM-R/im/im0491.png", "mask": "MitoEM-R/mito-val-v2/seg0491.tif", "shape": [4096, 4096], "n_instances": 339, "max_instance_id": 10836, "fg_fraction": 0.061523}
{"sample_id": "MitoEM-R_z0492", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 492, "image": "MitoEM-R/im/im0492.png", "mask": "MitoEM-R/mito-val-v2/seg0492.tif", "shape": [4096, 4096], "n_instances": 330, "max_instance_id": 10836, "fg_fraction": 0.061464}
{"sample_id": "MitoEM-R_z0493", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 493, "image": "MitoEM-R/im/im0493.png", "mask": "MitoEM-R/mito-val-v2/seg0493.tif", "shape": [4096, 4096], "n_instances": 329, "max_instance_id": 10836, "fg_fraction": 0.061524}
{"sample_id": "MitoEM-R_z0494", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 494, "image": "MitoEM-R/im/im0494.png", "mask": "MitoEM-R/mito-val-v2/seg0494.tif", "shape": [4096, 4096], "n_instances": 331, "max_instance_id": 10836, "fg_fraction": 0.061304}
{"sample_id": "MitoEM-R_z0495", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 495, "image": "MitoEM-R/im/im0495.png", "mask": "MitoEM-R/mito-val-v2/seg0495.tif", "shape": [4096, 4096], "n_instances": 332, "max_instance_id": 10836, "fg_fraction": 0.061458}
{"sample_id": "MitoEM-R_z0496", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 496, "image": "MitoEM-R/im/im0496.png", "mask": "MitoEM-R/mito-val-v2/seg0496.tif", "shape": [4096, 4096], "n_instances": 331, "max_instance_id": 10836, "fg_fraction": 0.061387}
{"sample_id": "MitoEM-R_z0497", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 497, "image": "MitoEM-R/im/im0497.png", "mask": "MitoEM-R/mito-val-v2/seg0497.tif", "shape": [4096, 4096], "n_instances": 341, "max_instance_id": 10836, "fg_fraction": 0.061971}
{"sample_id": "MitoEM-R_z0498", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 498, "image": "MitoEM-R/im/im0498.png", "mask": "MitoEM-R/mito-val-v2/seg0498.tif", "shape": [4096, 4096], "n_instances": 342, "max_instance_id": 10836, "fg_fraction": 0.06266}
{"sample_id": "MitoEM-R_z0499", "subset": "MitoEM-R", "organism": "rat", "split": "val", "z": 499, "image": "MitoEM-R/im/im0499.png", "mask": "MitoEM-R/mito-val-v2/seg0499.tif", "shape": [4096, 4096], "n_instances": 342, "max_instance_id": 10836, "fg_fraction": 0.063325}