condition mean min max 4 h after light 1.665825 1.48204 1.84961 8 h after light 2.8508 2.5766 3.125 12 h after light 2.59763 2.59737 2.59789 4 h after dark 2.78252 2.48836 2.99722 8 h after dark 2.5398933333333336 2.38564 2.78682 12 h after dark 2.047023333333333 1.68135 2.42175