condition	mean	min	max
4 h after light	6.102125	3.91053	8.29372
8 h after light	4.39925	3.03349	5.76501
12 h after light	3.312615	2.44816	4.17707
4 h after dark	4.2028	3.31543	5.83211
8 h after dark	4.95233	4.04737	5.92537
12 h after dark	2.4516207	0.0155221	3.86202