condition mean min max 4 h after light 96.2 96.2 96.2 8 h after light 100.6 92.7 108.5 12 h after light 106.1 75.2 137.0 4 h after dark 186.65 98.3 275.0 8 h after dark 165.0 141.5 188.5 12 h after dark 91.0 56.0 126.0