condition	mean	min	max
4 h after light	9.19146	9.0437	9.39207
8 h after light	8.90874	8.52491	9.169319999999999
12 h after light	9.178139999999999	8.92175	9.41798
4 h after dark	9.29668	9.14581	9.53513
8 h after dark	9.21326	8.97103	9.39494
12 h after dark	8.964590000000001	8.678510000000001	9.21385