condition	mean	min	max
4 h after light	8.9442775	8.911802	8.976753
8 h after light	9.4050775	9.382751	9.427404
12 h after light	9.161025500000001	8.953168	9.368883
4 h after dark	9.5808775	9.105435	10.05632
8 h after dark	9.218377	9.067871	9.368883
12 h after dark	9.615812	9.615812	9.615812