condition	mean	min	max
4 h after light	12.2	12.2	12.2
8 h after light	18.15	12.3	24.0
12 h after light	7.65	1.4	13.9
4 h after dark	19.7	18.0	21.4
8 h after dark	15.45	14.6	16.3
12 h after dark	21.15	0.8	41.5