condition mean min max 4 h after light 619.5 619.5 619.5 8 h after light 523.4 508.5 538.3 12 h after light 432.85 421.9 443.8 4 h after dark 385.20000000000005 296.8 473.6 8 h after dark 352.29999999999995 319.9 384.7 12 h after dark 424.45000000000005 313.7 535.2