condition mean min max 4 h after light 4.455909999999999 4.09593 4.81589 8 h after light 8.00524 7.09201 8.91847 12 h after light 10.183365 9.53073 10.836 4 h after dark 11.540199999999999 11.0079 12.0725 8 h after dark 7.26082 4.47274 10.0489 12 h after dark 7.47729 7.04543 7.90915