condition	mean	min	max
4 h after light	16.8	16.8	16.8
8 h after light	5.9	4.7	7.1
12 h after light	3.25	1.8	4.7
4 h after dark	9.4	3.1	15.7
8 h after dark	9.5	8.1	10.9
12 h after dark	5.6	2.5	8.7