condition mean min max 4 h after light 176.2 176.2 176.2 8 h after light 254.8 254.3 255.3 12 h after light 209.15 205.3 213.0 4 h after dark 231.75 182.5 281.0 8 h after dark 180.3 147.9 212.7 12 h after dark 159.55 144.7 174.4