condition mean min max 4 h after light 31.5 31.5 31.5 8 h after light 54.75 43.7 65.8 12 h after light 57.25 51.7 62.8 4 h after dark 73.6 70.9 76.3 8 h after dark 63.7 55.4 72.0 12 h after dark 51.400000000000006 43.7 59.1