condition mean min max 4 h after light 474.962895 327.816141 622.109649 8 h after light 533.7956765 453.001288 614.590065 12 h after light 642.461713 625.21675 659.706676 4 h after dark 473.1813885 421.037821 525.324956 8 h after dark 488.157985 413.312899 563.003071 12 h after dark 190.001288 190.001288 190.001288