condition	mean	min	max
4 h after light	2.9	2.9	2.9
8 h after light	13.399999999999999	13.2	13.6
12 h after light	6.65	3.5	9.8
4 h after dark	18.85	16.1	21.6
8 h after dark	2.65	0.6	4.7
12 h after dark	11.700000000000001	1.8	21.6