condition mean min max 3 h after light 674.831 611.811 791.635 6 h after light 1068.3896666666667 857.942 1424.43 9 h after light 707.658 625.969 849.703 12 h after light 468.43325 176.855 637.659 3 h after dark 370.68266666666665 266.646 480.502 6 h after dark 229.796 172.044 282.967 9 h after dark 160.38766666666666 131.935 203.324 12 h after dark 136.7375 104.416 169.059