condition mean min max 4 h after light 1.0180165 0.999353 1.03668 8 h after light 1.1678549999999999 1.08439 1.25132 12 h after light 2.06299 1.78866 2.33732 4 h after dark 1.660855 1.5145 1.80721 8 h after dark 1.97014 1.91243 2.02785 12 h after dark 1.521925 1.33817 1.70568