{
  "all_pass": true,
  "kind": "official_twilight_angle_categories_not_brightness_model",
  "inputs": {
    "solar_center_altitudes_deg": [
      0,
      -6,
      -12,
      -18
    ]
  },
  "checks": {
    "evening_thresholds_descend": true,
    "thresholds_match_USNO": [
      6,
      12,
      18
    ],
    "clock_intervals_computed": false,
    "actual_sky_color_computed": false
  },
  "limits": [
    "No location/date predictions",
    "Light pollution/Moon/clouds omitted",
    "0degree Sun centre is not conventional sunset"
  ]
}