condition	mean	min	max
4 h after light	2.6	2.6	2.6
8 h after light	16.6	3.5	29.7
12 h after light	3.25	3.0	3.5
4 h after dark	9.25	5.8	12.7
8 h after dark	16.35	16.3	16.4
12 h after dark	11.95	6.1	17.8