condition mean min max 0 h after light 15.94855 14.936 16.9611 4 h after light 10.4192 10.3799 10.4585 8 h after light 10.223415 9.49663 10.9502 4 h after dark 13.228 13.1855 13.2705 8 h after dark 15.86435 14.8662 16.8625 12 h after dark 16.5329 15.7171 17.3487