condition mean min max 3 h after light 4.34002 3.78853 5.17299 6 h after light 3.36539 2.89391 4.05171 9 h after light 3.62866 2.53753 5.44508 12 h after light 2.4449525 1.22218 4.34896 3 h after dark 2.4091 1.40705 3.87709 6 h after dark 3.7719533333333333 2.92418 4.48614 9 h after dark 5.406526666666666 4.8485 5.82754 12 h after dark 4.89762 3.8233 5.97194