condition	mean	min	max
4 h after light	2.7	2.7	2.7
8 h after light	12.25	3.1	21.4
12 h after light	3.5	2.0	5.0
4 h after dark	16.05	14.3	17.8
8 h after dark	6.3	6.0	6.6
12 h after dark	5.95	5.7	6.2