condition	mean	min	max
4 h after light	21.6	21.6	21.6
8 h after light	36.6	23.2	50.0
12 h after light	8.4	5.9	10.9
4 h after dark	11.4	3.8	19.0
8 h after dark	20.5	19.1	21.9
12 h after dark	2.1	2.0	2.2