condition mean min max 4 h after light 508.898856 423.873348 593.924364 8 h after light 432.5424295 407.166033 457.918826 12 h after light 496.5851695 411.76631 581.404029 4 h after dark 550.6492370000001 518.865533 582.432941 8 h after dark 495.63662899999997 480.4407 510.832558 12 h after dark 457.827329 457.827329 457.827329