condition mean min max 4 h after light 637.997977 382.401778 893.594176 8 h after light 556.1958625 480.17295 632.218775 12 h after light 408.334238 347.294681 469.373795 4 h after dark 692.4599855 369.286996 1015.632975 8 h after dark 715.3068109999999 669.983033 760.630589 12 h after dark 542.19381 542.19381 542.19381