condition mean min max 4 h after light 532.8 532.8 532.8 8 h after light 448.15 388.6 507.7 12 h after light 495.95000000000005 477.8 514.1 4 h after dark 505.45000000000005 450.8 560.1 8 h after dark 585.95 568.4 603.5 12 h after dark 584.25 581.6 586.9