condition	mean	min	max
4 h after light	4.8	4.8	4.8
8 h after light	20.4	8.7	32.1
12 h after light	6.0	5.0	7.0
4 h after dark	15.9	6.2	25.6
8 h after dark	23.8	9.1	38.5
12 h after dark	4.35	1.6	7.1