condition mean min max 4 h after light 219.4 219.4 219.4 8 h after light 150.5 98.0 203.0 12 h after light 101.25 54.6 147.9 4 h after dark 54.6 45.2 64.0 8 h after dark 37.85 15.6 60.1 12 h after dark 116.45 82.4 150.5