{
  "dataset": "GrowSpot indoor light measurements",
  "description": "Aggregate light-meter readings taken by people using GrowSpot, grouped by where the reading was taken. Counts, quartiles and band histograms for indoor, balcony and unspecified spots; outdoor (n=3) publishes counts only, because below 10 readings a distribution would describe individual readings. Aggregates only: no individual readings, locations or timestamps.",
  "license": "CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)",
  "attribution": "GrowSpot — growspotapp.com",
  "source_page": "https://growspotapp.com/data/indoor-light-measurements/",
  "snapshot_date": "2026-08-20",
  "revision": 2,
  "revision_date": "2026-08-28",
  "version": "2026-08-20 (rev 2, 2026-08-28)",
  "band_definitions": [
    {
      "key": "below_low",
      "range_lux": "under 270"
    },
    {
      "key": "low",
      "range_lux": "270-800"
    },
    {
      "key": "medium",
      "range_lux": "800-1,600"
    },
    {
      "key": "high",
      "range_lux": "1,600-10,800"
    },
    {
      "key": "very_high",
      "range_lux": "10,800+"
    }
  ],
  "totals": {
    "readings": 204,
    "spots": 104,
    "days": 36,
    "min_lux": 33,
    "median_lux": 3253,
    "max_lux": 50000
  },
  "environments": [
    {
      "environment": "indoor",
      "readings": 49,
      "spots": 40,
      "days": 19,
      "min_lux": 33,
      "p25_lux": 420,
      "median_lux": 2349,
      "p75_lux": 6200,
      "max_lux": 50000,
      "bands": {
        "below_low": 7,
        "low": 8,
        "medium": 4,
        "high": 19,
        "very_high": 11
      },
      "draw_conclusions": true
    },
    {
      "environment": "balcony",
      "readings": 25,
      "spots": 17,
      "days": 14,
      "min_lux": 154,
      "p25_lux": 3756,
      "median_lux": 8173,
      "p75_lux": 24208,
      "max_lux": 50000,
      "bands": {
        "below_low": 1,
        "low": 1,
        "medium": 2,
        "high": 12,
        "very_high": 9
      },
      "draw_conclusions": true
    },
    {
      "environment": "unspecified",
      "readings": 127,
      "spots": 101,
      "days": 33,
      "min_lux": 48,
      "p25_lux": 1718,
      "median_lux": 3142,
      "p75_lux": 7270,
      "max_lux": 50000,
      "bands": {
        "below_low": 2,
        "low": 13,
        "medium": 16,
        "high": 81,
        "very_high": 15
      },
      "draw_conclusions": true
    },
    {
      "environment": "outdoor",
      "readings": 3,
      "spots": 3,
      "days": 3,
      "min_lux": null,
      "p25_lux": null,
      "median_lux": null,
      "p75_lux": null,
      "max_lux": null,
      "bands": {
        "below_low": null,
        "low": null,
        "medium": null,
        "high": null,
        "very_high": null
      },
      "draw_conclusions": false,
      "withheld_small_sample": true
    }
  ]
}