condition mean min max 4 h after light 171.1 171.1 171.1 8 h after light 211.1 156.5 265.7 12 h after light 121.75 65.6 177.9 4 h after dark 148.8 106.8 190.8 8 h after dark 178.85 165.0 192.7 12 h after dark 270.5 190.3 350.7