condition	mean	min	max
4 h after light	3.7	3.7	3.7
8 h after light	7.2	1.4	13.0
12 h after light	3.1	3.0	3.2
4 h after dark	2.5	2.0	3.0
8 h after dark	17.9	5.0	30.8
12 h after dark	8.8	8.7	8.9