condition mean min max 4 h after light 31.8 31.8 31.8 8 h after light 75.85 44.2 107.5 12 h after light 14.15 6.3 22.0 4 h after dark 51.0 37.2 64.8 8 h after dark 31.05 30.5 31.6 12 h after dark 22.65 7.5 37.8