condition mean min max 4 h after light 143.1 143.1 143.1 8 h after light 195.65 150.8 240.5 12 h after light 262.95 163.1 362.8 4 h after dark 589.5 227.0 952.0 8 h after dark 694.15 691.3 697.0 12 h after dark 714.0 683.7 744.3