condition mean min max 4 h after light 572.5 572.5 572.5 8 h after light 418.95000000000005 415.6 422.3 12 h after light 489.55 442.5 536.6 4 h after dark 486.4 477.3 495.5 8 h after dark 509.1 471.7 546.5 12 h after dark 545.2 518.8 571.6