condition	mean	min	max
4 h after light	8.2	8.2	8.2
8 h after light	21.9	13.8	30.0
12 h after light	7.6	5.3	9.9
4 h after dark	6.0	5.8	6.2
8 h after dark	3.4	2.3	4.5
12 h after dark	14.65	2.3	27.0