condition	mean	min	max
4 h after light	8.0	8.0	8.0
8 h after light	9.0	4.7	13.3
12 h after light	31.6	29.8	33.4
4 h after dark	10.0	4.2	15.8
8 h after dark	8.65	7.9	9.4
12 h after dark	6.1	3.8	8.4