condition	mean	min	max
0 h after light	8.65659	7.79231	9.52087
4 h after light	9.57963	8.97066	10.1886
8 h after light	7.103835	6.55067	7.657
4 h after dark	8.910125	8.44931	9.37094
8 h after dark	11.4949	11.0903	11.8995
12 h after dark	9.900165000000001	9.72443	10.0759