condition	mean	min	max
4 h after light	3.989335	3.64149	4.33718
8 h after light	6.52015	6.30517	6.73513
12 h after light	9.16082	8.94047	9.38117
4 h after dark	14.94295	13.2252	16.6607
8 h after dark	16.2823	15.5565	17.0081
12 h after dark	11.534849999999999	11.1039	11.9658