condition mean min max 4 h after light 45.8 45.8 45.8 8 h after light 57.55 28.6 86.5 12 h after light 92.6 85.6 99.6 4 h after dark 38.95 13.5 64.4 8 h after dark 46.95 41.7 52.2 12 h after dark 9.85 4.6 15.1