condition mean min max 4 h after light 522.7 522.7 522.7 8 h after light 492.65 474.3 511.0 12 h after light 462.05 418.1 506.0 4 h after dark 494.45 445.5 543.4 8 h after dark 417.15 359.9 474.4 12 h after dark 408.45000000000005 340.8 476.1