condition	mean	min	max
4 h after light	9.3380215	8.76804	9.908003
8 h after light	8.507973	7.646142	9.369804
12 h after light	8.7928	8.223968	9.361632
4 h after dark	8.4969535	8.302895	8.691012
8 h after dark	9.0029045	8.98395	9.021859
12 h after dark	9.686116	9.686116	9.686116