condition	mean	min	max
4 h after light	2.25777	1.84125	2.67429
8 h after light	3.09187	2.85385	3.32989
12 h after light	21.07135	20.2794	21.8633
4 h after dark	25.5907	23.7172	27.4642
8 h after dark	14.89085	14.2838	15.4979
12 h after dark	6.773605	6.74069	6.80652