condition	mean	min	max
0 h after light	8.069535	8.02053	8.11854
4 h after light	7.210065	6.51232	7.90781
8 h after light	5.78397	5.74061	5.82733
4 h after dark	8.098535	7.95924	8.23783
8 h after dark	7.439335	6.7884	8.09027
12 h after dark	7.48404	7.09198	7.8761