condition mean min max 4 h after light 8.5345765 8.121063 8.94809 8 h after light 11.6386635 10.871193 12.406134 12 h after light 10.715396 10.38865 11.042142 4 h after dark 15.0025495 10.184994 19.820105 8 h after dark 13.306614499999998 9.616195 16.997034 12 h after dark 8.803668 8.803668 8.803668