condition	mean	min	max
0 h after light	9.646325000000001	9.4859	9.80675
4 h after light	6.385645	6.34141	6.42988
8 h after light	9.028929999999999	8.85311	9.20475
4 h after dark	11.0959	10.9685	11.2233
8 h after dark	10.8107	10.526	11.0954
12 h after dark	8.75263	8.47647	9.02879