condition	mean	min	max
4 h after light	17.2	17.2	17.2
8 h after light	21.15	1.0	41.3
12 h after light	7.9	2.4	13.4
4 h after dark	12.0	5.3	18.7
8 h after dark	19.1	8.1	30.1
12 h after dark	1.55	1.3	1.8