condition mean min max 4 h after light 10.622935 8.59487 12.651 8 h after light 11.1205 10.8831 11.3579 12 h after light 14.870149999999999 13.6131 16.1272 4 h after dark 18.14715 15.1997 21.0946 8 h after dark 15.41745 15.3627 15.4722 12 h after dark 13.492750000000001 13.2279 13.7576