condition	mean	min	max
4 h after light	8.19284	8.14373	8.23179
8 h after light	8.316203333333334	8.08787	8.50114
12 h after light	8.68687	8.64515	8.725530000000001
4 h after dark	8.8029	8.69024	8.87129
8 h after dark	8.582733333333334	8.51023	8.64807
12 h after dark	8.633363333333334	8.584760000000001	8.69855