condition	mean	min	max
4 h after light	2.6	2.6	2.6
8 h after light	1.7	1.1	2.3
12 h after light	18.75	16.5	21.0
4 h after dark	9.1	2.6	15.6
8 h after dark	2.75	2.2	3.3
12 h after dark	15.6	2.4	28.8