condition	mean	min	max
4 h after light	2.6	2.6	2.6
8 h after light	7.0	4.3	9.7
12 h after light	8.85	5.1	12.6
4 h after dark	4.45	3.4	5.5
8 h after dark	4.55	3.3	5.8
12 h after dark	6.65	4.2	9.1