condition mean min max 4 h after light 149.7 149.7 149.7 8 h after light 137.2 97.6 176.8 12 h after light 182.2 152.4 212.0 4 h after dark 159.3 147.7 170.9 8 h after dark 110.25 75.5 145.0 12 h after dark 149.25 137.1 161.4