condition mean min max 4 h after light 497.3397095 485.531915 509.147504 8 h after light 436.5156995 420.030111 453.001288 12 h after light 544.0496109999999 497.786749 590.312473 4 h after dark 568.814186 565.934775 571.693597 8 h after dark 628.3766915 624.343071 632.410312 12 h after dark 556.300486 556.300486 556.300486