condition	mean	min	max
4 h after light	9.116685	8.95906	9.27431
8 h after light	8.558105000000001	8.16595	8.95026
12 h after light	9.57194	9.55426	9.58962
4 h after dark	12.7787	11.923	13.6344
8 h after dark	11.21235	11.0838	11.3409
12 h after dark	11.17855	10.7516	11.6055