condition	mean	min	max
4 h after light	5.6	5.6	5.6
8 h after light	1.5	1.4	1.6
12 h after light	19.55	3.0	36.1
4 h after dark	21.8	5.7	37.9
8 h after dark	11.100000000000001	5.4	16.8
12 h after dark	13.65	11.5	15.8