condition	mean	min	max
4 h after light	9.49814	8.01268	10.9836
8 h after light	10.70421	9.92662	11.4818
12 h after light	17.9302	17.7057	18.1547
4 h after dark	23.02315	22.1238	23.9225
8 h after dark	19.0354	18.5322	19.5386
12 h after dark	13.3651	12.8585	13.8717