condition mean min max 0 h after light 12.312149999999999 12.1959 12.4284 4 h after light 7.159825 6.85615 7.4635 8 h after light 9.630925000000001 7.48925 11.7726 4 h after dark 9.51936 9.08674 9.95198 8 h after dark 7.17182 6.47404 7.8696 12 h after dark 8.529645 7.18964 9.86965