condition mean min max 4 h after light 41.8 41.8 41.8 8 h after light 61.5 28.7 94.3 12 h after light 55.35 32.8 77.9 4 h after dark 10.95 9.8 12.1 8 h after dark 30.05 6.2 53.9 12 h after dark 17.099999999999998 6.3 27.9