condition mean min max 4 h after light 11.714749999999999 11.633 11.7965 8 h after light 12.525749999999999 12.4286 12.6229 12 h after light 11.96235 11.005 12.9197 4 h after dark 16.36525 15.8146 16.9159 8 h after dark 20.2134 19.5581 20.8687 12 h after dark 15.8946 14.8798 16.9094