condition mean min max 4 h after light 605.1095 570.141 640.078 8 h after light 534.6915 522.014 547.369 12 h after light 558.037 456.44 659.634 4 h after dark 600.1123333333334 551.242 633.812 8 h after dark 730.735 675.436 813.235 12 h after dark 706.4723333333334 667.663 727.591