condition	mean	min	max
4 h after light	10.463875	9.07705	11.8507
8 h after light	8.91715	7.89597	9.93833
12 h after light	7.99996	6.99469	9.00523
4 h after dark	12.764	12.2217	13.3063
8 h after dark	13.4941	11.8044	15.1838
12 h after dark	12.245899999999999	12.2424	12.2494