{
 "level": "busy",
 "day": 15,
 "weekday": "Tue",
 "window_utc": [
  "2021-06-08T17:30:00+00:00",
  "2021-06-08T17:56:00+00:00"
 ],
 "window_unix": [
  1623173400.0,
  1623174960.0
 ],
 "window_note": "[start, end): the end includes the last logged walk minute in full",
 "walked_utc": "17:34-17:50",
 "walks": 12,
 "walked_m": 940,
 "present": "median 88 tracks present",
 "live_rate_hz": 2.5,
 "live_source": "live tracklet log",
 "walkers": 2,
 "note": "the four routes were walked concurrently by two walkers"
}