condition	mean	min	max
4 h after light	6.8	6.8	6.8
8 h after light	16.25	3.1	29.4
12 h after light	9.3	2.0	16.6
4 h after dark	16.45	2.3	30.6
8 h after dark	11.65	2.2	21.1
12 h after dark	2.35	1.8	2.9