condition mean min max 0 h after light 20.9652 20.0186 21.9118 4 h after light 16.58935 13.9968 19.1819 8 h after light 11.456 11.3095 11.6025 4 h after dark 14.88385 13.5638 16.2039 8 h after dark 14.919550000000001 14.5136 15.3255 12 h after dark 23.69005 21.0288 26.3513