condition mean min max 4 h after light 0.266273 0.23197 0.300576 8 h after light 0.1715317 0.0724784 0.270585 12 h after light 0.2802165 0.263011 0.297422 4 h after dark 0.784477 0.644647 0.924307 8 h after dark 0.770454 0.651369 0.889539 12 h after dark 0.713171 0.370512 1.05583