condition	mean	min	max
4 h after light	8.553923333333334	8.49194	8.6336
8 h after light	8.669893333333333	8.521469999999999	8.749189999999999
12 h after light	8.843163333333333	8.79425	8.88945
4 h after dark	8.76646	8.71636	8.83975
8 h after dark	8.58975	8.48755	8.77719
12 h after dark	8.21127	7.91343	8.397969999999999