condition mean min max 4 h after light 17.603 15.8084 19.3976 8 h after light 24.5328 24.0964 24.9692 12 h after light 32.47215 30.5223 34.422 4 h after dark 21.2052 20.98 21.6179 8 h after dark 21.216133333333335 20.2845 22.3127 12 h after dark 18.527633333333334 16.9343 19.8443