condition	mean	min	max
4 h after light	6.8	6.8	6.8
8 h after light	3.7	3.6	3.8
12 h after light	11.3	2.5	20.1
4 h after dark	23.200000000000003	9.2	37.2
8 h after dark	12.899999999999999	10.1	15.7
12 h after dark	20.049999999999997	14.2	25.9