condition	mean	min	max
4 h after light	1.6	1.6	1.6
8 h after light	17.4	6.1	28.7
12 h after light	4.8	1.5	8.1
4 h after dark	5.35	4.2	6.5
8 h after dark	13.85	5.8	21.9
12 h after dark	4.0	2.9	5.1