condition	mean	min	max
4 h after light	6.2	6.2	6.2
8 h after light	4.8	1.9	7.7
12 h after light	4.6	1.7	7.5
4 h after dark	2.8	1.9	3.7
8 h after dark	3.55	1.8	5.3
12 h after dark	6.35	5.6	7.1