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analysis/sb_heard_d04/report.json

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+{
+ "smoke": false,
+ "purpose": "descriptive only \u2014 did the SB hear the drone through the 08-04 crossing flight to 477 m (first data past its known ~290 m envelope). No gates.",
+ "repo": "joshruby/nightjar-flight-20260804",
+ "t0": 1785861772,
+ "n_seconds": 1570,
+ "live_channels": [
+  0,
+  3,
+  5
+ ],
+ "channel_rms": {
+  "0": 15.316816756904,
+  "1": 2.1575389718819705e-05,
+  "2": 2.1575389718819705e-05,
+  "3": 13.62149372540093,
+  "4": 2.157814743283945e-05,
+  "5": 28.113132063863073,
+  "6": 2.1580979639218582e-05,
+  "7": 2.1580979639218582e-05
+ },
+ "floor": {
+  "definition": "pre-takeoff seconds ending before first-airborne - 30 s; per-metric p95",
+  "n_seconds": 207,
+  "n_floor_warning": false,
+  "p95": {
+   "bp_db": 58.962,
+   "lo_prom_db": 14.636,
+   "comb_db": 6.924,
+   "hi_prom_db": 15.711
+  },
+  "median": {
+   "bp_db": 39.915,
+   "lo_prom_db": 9.215,
+   "comb_db": 3.933,
+   "hi_prom_db": 8.79
+  }
+ },
+ "gps": {
+  "n_fixes": 12448,
+  "airborne_intervals": [
+   [
+    1785862009.4,
+    1785862094.4
+   ],
+   [
+    1785862114.1,
+    1785862129.9
+   ],
+   [
+    1785862193.0,
+    1785862194.4
+   ],
+   [
+    1785862202.9,
+    1785862851.2
+   ],
+   [
+    1785862869.5,
+    1785863229.7
+   ]
+  ],
+  "max_slant_m": 476.1
+ },
+ "metric_definitions": {
+  "bp_db": "10log10 mean power 900-3800 Hz (SB usable band)",
+  "lo_prom_db": "max-prominence line 100-400 Hz, dB over \u00b130 Hz running median",
+  "comb_db": "mean prominence at {2,3,4}x lo_f0, each searched \u00b13 Hz",
+  "hi_prom_db": "max-prominence line 900-3800 Hz, dB over \u00b130 Hz running median",
+  "channel_combine": "incoherent mean power spectrum over the live channels"
+ },
+ "range_bins": [
+  [
+   0,
+   60
+  ],
+  [
+   60,
+   160
+  ],
+  [
+   160,
+   260
+  ],
+  [
+   260,
+   350
+  ],
+  [
+   350,
+   480
+  ]
+ ],
+ "tables": {
+  "bp_db": {
+   "0-60": {
+    "n": 366,
+    "frac_above_floor": 0.071,
+    "median": 50.7
+   },
+   "60-160": {
+    "n": 112,
+    "frac_above_floor": 0.0,
+    "median": 40.9
+   },
+   "160-260": {
+    "n": 101,
+    "frac_above_floor": 0.0,
+    "median": 39.98
+   },
+   "260-350": {
+    "n": 301,
+    "frac_above_floor": 0.0,
+    "median": 33.98
+   },
+   "350-480": {
+    "n": 231,
+    "frac_above_floor": 0.13,
+    "median": 36.72
+   },
+   "postland_118s": {
+    "n": 112,
+    "frac_above_floor": 0.0,
+    "median": 38.06
+   }
+  },
+  "lo_prom_db": {
+   "0-60": {
+    "n": 366,
+    "frac_above_floor": 0.541,
+    "median": 15.32
+   },
+   "60-160": {
+    "n": 112,
+    "frac_above_floor": 0.304,
+    "median": 10.76
+   },
+   "160-260": {
+    "n": 101,
+    "frac_above_floor": 0.119,
+    "median": 9.75
+   },
+   "260-350": {
+    "n": 301,
+    "frac_above_floor": 0.193,
+    "median": 9.83
+   },
+   "350-480": {
+    "n": 231,
+    "frac_above_floor": 0.351,
+    "median": 13.12
+   },
+   "postland_118s": {
+    "n": 112,
+    "frac_above_floor": 0.312,
+    "median": 11.57
+   }
+  },
+  "comb_db": {
+   "0-60": {
+    "n": 366,
+    "frac_above_floor": 0.44,
+    "median": 6.25
+   },
+   "60-160": {
+    "n": 112,
+    "frac_above_floor": 0.304,
+    "median": 5.12
+   },
+   "160-260": {
+    "n": 101,
+    "frac_above_floor": 0.079,
+    "median": 4.1
+   },
+   "260-350": {
+    "n": 301,
+    "frac_above_floor": 0.07,
+    "median": 4.18
+   },
+   "350-480": {
+    "n": 231,
+    "frac_above_floor": 0.104,
+    "median": 4.69
+   },
+   "postland_118s": {
+    "n": 112,
+    "frac_above_floor": 0.125,
+    "median": 4.66
+   }
+  },
+  "hi_prom_db": {
+   "0-60": {
+    "n": 366,
+    "frac_above_floor": 0.287,
+    "median": 12.36
+   },
+   "60-160": {
+    "n": 112,
+    "frac_above_floor": 0.277,
+    "median": 9.99
+   },
+   "160-260": {
+    "n": 101,
+    "frac_above_floor": 0.267,
+    "median": 9.75
+   },
+   "260-350": {
+    "n": 301,
+    "frac_above_floor": 0.066,
+    "median": 10.77
+   },
+   "350-480": {
+    "n": 231,
+    "frac_above_floor": 0.264,
+    "median": 11.49
+   },
+   "postland_118s": {
+    "n": 112,
+    "frac_above_floor": 0.027,
+    "median": 8.52
+   }
+  }
+ },
+ "uma_det": {
+  "available": false,
+  "note": "analysis/tkbd/dethead_d04.parquet absent at runtime in both candidate repos \u2014 SB-only report"
+ },
+ "summary": [
+  "SB bp_db: drops below 50% in 0-60 m (7%)",
+  "SB lo_prom_db: drops below 50% in 60-160 m (30%; previous bin 0-60 m at 54%)",
+  "SB comb_db: drops below 50% in 0-60 m (44%)",
+  "SB hi_prom_db: drops below 50% in 0-60 m (29%)",
+  "UMA det head: parquet absent at runtime \u2014 no comparison row"
+ ]
+}