condition	mean	min	max
4 h after light	4.2	4.2	4.2
8 h after light	4.3	1.5	7.1
12 h after light	18.85	10.5	27.2
4 h after dark	20.55	13.8	27.3
8 h after dark	11.399999999999999	2.9	19.9
12 h after dark	4.0	2.6	5.4