condition mean min max 4 h after light 6.9828399999999995 2.68999 12.9933 8 h after light 4.958046 0.994328 9.35913 12 h after light 5.34737 2.92536 8.86782 4 h after dark 8.54136 6.3271 9.78585 8 h after dark 6.94032 4.90824 8.24649 12 h after dark 8.397083333333333 7.68604 9.33281