condition mean min max 2 h after light 9.077226666666666 6.33004 10.9392 6 h after light 6.36141 4.96095 7.67167 10 h after light 5.36323 3.28677 6.7236 14 h after light 6.186785 4.53088 6.74184 18 h after light 7.541585 5.37054 8.87726 2 h after dark 8.644968333333333 6.1366 12.5616