condition mean min max 2 h after light 11.581736666666666 8.42147 14.4174 6 h after light 9.362388333333334 5.90981 14.7893 10 h after light 7.839965 5.44449 9.61661 14 h after light 8.255595 4.49174 10.3596 18 h after light 9.079143333333334 6.26766 13.3953 2 h after dark 20.65415 17.5558 25.1381