Upload difficulty data (batch 29/54, 220 files, 509.8 MB)

Upload difficulty data (batch 28/54, 342 files, 511.9 MB)

Upload difficulty data (batch 27/54, 343 files, 510.8 MB)

Upload difficulty data (batch 26/54, 344 files, 511.8 MB)

Upload difficulty data (batch 25/54, 343 files, 511.6 MB)

Upload difficulty data (batch 24/54, 344 files, 511.9 MB)

Upload difficulty data (batch 23/54, 336 files, 510.2 MB)

Upload difficulty data (batch 22/54, 342 files, 511.0 MB)

Upload difficulty data (batch 21/54, 338 files, 511.3 MB)

Upload difficulty data (batch 20/54, 347 files, 511.4 MB)

Upload difficulty data (batch 19/54, 346 files, 511.4 MB)

Upload difficulty data (batch 18/54, 603 files, 511.3 MB)