condition mean min max 4 h after light 15.5228 15.5045 15.5411 8 h after light 15.903299999999998 14.8014 17.0052 12 h after light 16.934350000000002 16.2974 17.5713 4 h after dark 23.37255 22.6022 24.1429 8 h after dark 18.941049999999997 18.6148 19.2673 12 h after dark 19.412100000000002 18.5244 20.2998