condition	mean	min	max
4 h after light	9.4	9.4	9.4
8 h after light	5.05	3.4	6.7
12 h after light	15.05	3.3	26.8
4 h after dark	19.0	8.9	29.1
8 h after dark	11.55	9.1	14.0
12 h after dark	15.35	8.2	22.5