condition mean min max 4 h after light 180.4 180.4 180.4 8 h after light 177.05 120.0 234.1 12 h after light 203.7 176.6 230.8 4 h after dark 151.4 140.8 162.0 8 h after dark 119.35 97.5 141.2 12 h after dark 101.25 81.8 120.7