condition mean min max 0 h after light 5.980255 5.42489 6.53562 4 h after light 6.627165 5.64456 7.60977 8 h after light 8.111405 7.53991 8.6829 4 h after dark 8.178085 7.70257 8.6536 8 h after dark 7.01846 6.86589 7.17103 12 h after dark 4.9774449999999995 4.78635 5.16854