condition mean min max 4 h after light 24.099 17.2076 30.9904 8 h after light 11.46945 11.2269 11.712 12 h after light 20.715600000000002 17.9784 23.4528 4 h after dark 19.548099999999998 17.9839 21.1123 8 h after dark 17.77335 16.6024 18.9443 12 h after dark 23.361449999999998 23.1907 23.5322