condition mean min max 4 h after light 9.1 9.1 9.1 8 h after light 151.1 81.8 220.4 12 h after light 97.1 55.2 139.0 4 h after dark 70.5 26.3 114.7 8 h after dark 94.94999999999999 76.8 113.1 12 h after dark 84.1 58.7 109.5