condition mean min max 4 h after light 406.7 406.7 406.7 8 h after light 375.35 354.4 396.3 12 h after light 336.9 309.1 364.7 4 h after dark 434.7 346.6 522.8 8 h after dark 456.1 428.0 484.2 12 h after dark 421.5 381.1 461.9