condition mean min max 4 h after light 5.01609 3.54469 6.48749 8 h after light 7.117115 6.94185 7.29238 12 h after light 6.26774 6.05802 6.47746 4 h after dark 2.93221 2.64349 3.1823 8 h after dark 2.0590433333333333 1.86974 2.32085 12 h after dark 3.26668 2.79008 4.04819