condition mean min max 4 h after light 446.5 446.5 446.5 8 h after light 404.9 292.8 517.0 12 h after light 559.3 348.3 770.3 4 h after dark 810.0 731.0 889.0 8 h after dark 719.6500000000001 718.2 721.1 12 h after dark 503.7 491.4 516.0