condition mean min max 4 h after light 11.0931 10.1367 12.0495 8 h after light 5.60716 5.4263 5.78802 12 h after light 2.0619899999999998 1.43776 2.68622 4 h after dark 2.3692 1.5461 3.1923 8 h after dark 1.99227 1.73392 2.25062 12 h after dark 4.02705 3.43441 4.61969