condition mean min max 0 h after light 2.04344 2.03695 2.04993 4 h after light 3.898965 3.83793 3.96 8 h after light 3.376525 3.25738 3.49567 4 h after dark 3.5244400000000002 3.13774 3.91114 8 h after dark 2.083755 2.08185 2.08566 12 h after dark 1.983505 1.90313 2.06388