condition	mean	min	max
4 h after light	3.0	3.0	3.0
8 h after light	10.0	2.8	17.2
12 h after light	2.25	1.6	2.9
4 h after dark	2.8	1.9	3.7
8 h after dark	2.1	1.2	3.0
12 h after dark	1.6	1.2	2.0