{
 "meta": {
  "dataset": "Subscriber history — @Ophthalmology_Data",
  "channel": "https://tgregister.com/channel/Ophthalmology_Data",
  "retrieved_at": "2026-09-06T17:19:26.243Z",
  "licence": "CC BY 4.0 — attribute to tgregister.com",
  "n_readings": 19,
  "window": {
   "from": "2026-08-16T09:01:12.009Z",
   "to": "2026-09-05T16:16:10.599Z"
  },
  "columns": {
   "ts": "when this reading was taken, UTC",
   "subscribers": "the count read (or, for source 3, carried over) — see source below",
   "source": {
    "0": "sweep.py — t.me/<name> profile page",
    "1": "promote.py — Bot API getChat",
    "2": "resolve.py — MTProto",
    "3": "spromote.py — t.me/s/<name> post preview (figure carried over from an earlier profile read, not the preview’s own rounded header)",
    "4": "remeasure.py — t.me/<name> profile page, re-read on a schedule"
   }
  },
  "note": "Snapshots are written only when a reading changes: a gap in ts means \"no change observed between readings\", never \"not measured\" and never \"interpolated\". Readings from different sources are separate lineages that do not confirm one another — subtracting across them can attribute a change to a period nothing was actually read in. Full method: https://tgregister.com/methodology#measuring"
 },
 "rows": [
  {
   "ts": "2026-08-16T09:01:12.009Z",
   "subscribers": 16314,
   "source": 0
  },
  {
   "ts": "2026-08-17T13:57:06.410Z",
   "subscribers": 16320,
   "source": 4
  },
  {
   "ts": "2026-08-18T09:34:18.958Z",
   "subscribers": 16320,
   "source": 1
  },
  {
   "ts": "2026-08-18T15:43:53.312Z",
   "subscribers": 16313,
   "source": 4
  },
  {
   "ts": "2026-08-19T17:33:57.617Z",
   "subscribers": 16317,
   "source": 4
  },
  {
   "ts": "2026-08-20T20:23:30.716Z",
   "subscribers": 16320,
   "source": 4
  },
  {
   "ts": "2026-08-22T05:58:53.065Z",
   "subscribers": 16330,
   "source": 4
  },
  {
   "ts": "2026-08-23T23:58:32.166Z",
   "subscribers": 16344,
   "source": 4
  },
  {
   "ts": "2026-08-25T04:13:10.479Z",
   "subscribers": 16358,
   "source": 4
  },
  {
   "ts": "2026-08-26T03:42:00.406Z",
   "subscribers": 16370,
   "source": 4
  },
  {
   "ts": "2026-08-27T06:47:56.785Z",
   "subscribers": 16434,
   "source": 4
  },
  {
   "ts": "2026-08-28T09:08:15.227Z",
   "subscribers": 16453,
   "source": 4
  },
  {
   "ts": "2026-08-29T10:34:14.202Z",
   "subscribers": 16558,
   "source": 4
  },
  {
   "ts": "2026-08-30T13:07:45.531Z",
   "subscribers": 16596,
   "source": 4
  },
  {
   "ts": "2026-08-31T11:19:17.401Z",
   "subscribers": 16604,
   "source": 4
  },
  {
   "ts": "2026-09-01T09:44:51.118Z",
   "subscribers": 16628,
   "source": 4
  },
  {
   "ts": "2026-09-02T07:12:57.857Z",
   "subscribers": 16645,
   "source": 4
  },
  {
   "ts": "2026-09-03T16:42:06.741Z",
   "subscribers": 16656,
   "source": 4
  },
  {
   "ts": "2026-09-05T16:16:10.599Z",
   "subscribers": 16669,
   "source": 4
  }
 ]
}