condition mean min max 4 h after light 108.9 108.9 108.9 8 h after light 48.7 35.6 61.8 12 h after light 53.1 15.9 90.3 4 h after dark 54.0 13.0 95.0 8 h after dark 93.9 53.7 134.1 12 h after dark 104.15 94.9 113.4