condition mean min max 4 h after light 203.5 203.5 203.5 8 h after light 165.5 155.2 175.8 12 h after light 146.9 100.5 193.3 4 h after dark 124.6 113.6 135.6 8 h after dark 107.15 98.9 115.4 12 h after dark 134.95 99.0 170.9