condition mean min max 4 h after light 6.58747 3.63004 8.15188 8 h after light 14.420133333333334 5.6541 19.139 12 h after light 17.6229 11.7443 23.6741 4 h after dark 16.5595 15.3803 17.707 8 h after dark 9.827196666666667 7.89479 11.7779 12 h after dark 8.49737 6.81263 9.5038