condition	mean	min	max
4 h after light	5.1	5.1	5.1
8 h after light	13.6	3.9	23.3
12 h after light	12.45	3.4	21.5
4 h after dark	3.3	2.3	4.3
8 h after dark	19.35	2.5	36.2
12 h after dark	15.4	3.8	27.0