condition mean min max 4 h after light 17.7 17.7 17.7 8 h after light 9.950000000000001 1.1 18.8 12 h after light 0.9500000000000001 0.8 1.1 4 h after dark 26.4 24.5 28.3 8 h after dark 14.600000000000001 7.9 21.3 12 h after dark 1.65 1.3 2.0