condition	mean	min	max
0 h after light	3.330305	2.59306	4.06755
4 h after light	4.9555299999999995	4.89808	5.01298
8 h after light	19.0003	17.8795	20.1211
4 h after dark	10.234765	9.98713	10.4824
8 h after dark	5.99038	5.55382	6.42694
12 h after dark	3.06156	2.79959	3.32353