condition mean min max 4 h after light 1.975918 0.569226 3.38261 8 h after light 3.12718 2.85606 3.3983 12 h after light 3.24773 2.66969 3.82577 4 h after dark 1.1679466666666667 0.0 2.33227 8 h after dark 1.660216 0.604568 2.78361 12 h after dark 1.51224 0.0 2.51409