condition mean min max 4 h after light 5.452436666666666 5.37344 5.5145599999999995 8 h after light 5.523816666666666 5.3525599999999995 5.794969999999999 12 h after light 5.27966 5.11905 5.43832 4 h after dark 5.366556666666667 5.27884 5.42471 8 h after dark 5.397543333333333 5.06995 5.64837 12 h after dark 5.5572799999999996 5.343719999999999 5.85849