condition mean min max 0 h after light 8.45819 7.71197 9.20441 4 h after light 10.137065 9.54913 10.725 8 h after light 6.962070000000001 6.47349 7.45065 4 h after dark 13.9207 11.5053 16.3361 8 h after dark 14.32655 12.032 16.6211 12 h after dark 10.648700000000002 9.5263 11.7711