condition mean min max 4 h after light 172.6 172.6 172.6 8 h after light 150.7 134.0 167.4 12 h after light 103.45 57.0 149.9 4 h after dark 56.75 21.5 92.0 8 h after dark 32.85 19.0 46.7 12 h after dark 48.849999999999994 29.1 68.6