condition	mean	min	max
4 h after light	1.8	1.8	1.8
8 h after light	7.75	1.5	14.0
12 h after light	15.55	12.9	18.2
4 h after dark	16.85	14.6	19.1
8 h after dark	22.8	16.5	29.1
12 h after dark	5.199999999999999	2.3	8.1