condition mean min max 0 h after light 519.8425 507.984 531.701 2 h after light 589.8205 561.486 618.155 4 h after light 580.8315 569.042 592.621 8 h after light 642.406 635.513 649.299 12 h after light 764.062 712.192 815.932 2 h after dark 860.242 837.336 883.148 4 h after dark 919.7345 894.957 944.512 8 h after dark 746.1165 716.435 775.798 12 h after dark 564.7115 493.197 636.226