condition mean min max 4 h after light 4.90031 3.32113 6.47949 8 h after light 6.0084599999999995 5.96068 6.05624 12 h after light 7.08612 6.70467 7.46757 4 h after dark 9.87885 9.45987 10.3068 8 h after dark 8.559713333333333 8.17794 8.88497 12 h after dark 6.053203333333333 5.20309 6.76263