condition	mean	min	max
4 h after light	2.5	2.5	2.5
8 h after light	5.0	1.4	8.6
12 h after light	20.0	11.3	28.7
4 h after dark	30.3	16.4	44.2
8 h after dark	16.05	2.2	29.9
12 h after dark	6.4	5.9	6.9