condition mean min max 4 h after light 731.354434 573.022936 889.685932 8 h after light 995.5090495000001 781.770518 1209.247581 12 h after light 1197.553296 1041.070698 1354.035894 4 h after dark 1993.151212 1345.37806 2640.924364 8 h after dark 1920.7115534999998 1244.138702 2597.284405 12 h after dark 2689.532755 2689.532755 2689.532755