condition	mean	min	max
4 h after light	1.5	1.5	1.5
8 h after light	17.3	15.8	18.8
12 h after light	16.35	3.7	29.0
4 h after dark	15.6	2.4	28.8
8 h after dark	0.85	0.5	1.2
12 h after dark	6.3	1.2	11.4