condition	mean	min	max
4 h after light	13.843	12.6791	15.0069
8 h after light	3.82787	3.57133	4.08441
12 h after light	1.7187299999999999	1.61727	1.82019
4 h after dark	1.4635235	0.999457	1.92759
8 h after dark	5.109205	4.76604	5.45237
12 h after dark	9.00076	8.74916	9.25236