condition	mean	min	max
4 h after light	8.1	8.1	8.1
8 h after light	9.45	8.5	10.4
12 h after light	11.85	8.1	15.6
4 h after dark	14.149999999999999	7.1	21.2
8 h after dark	19.3	17.5	21.1
12 h after dark	7.8	7.4	8.2