condition	mean	min	max
4 h after light	1.8	1.8	1.8
8 h after light	17.5	1.9	33.1
12 h after light	12.5	11.5	13.5
4 h after dark	11.2	2.7	19.7
8 h after dark	22.85	22.6	23.1
12 h after dark	10.65	3.7	17.6