condition	mean	min	max
4 h after light	16.6939	15.5295	17.8583
8 h after light	9.660895	9.12609	10.1957
12 h after light	8.78293	7.65223	9.91363
4 h after dark	13.8309	12.1921	15.4697
8 h after dark	12.6587	12.4501	12.8673
12 h after dark	15.2945	14.4431	16.1459