condition	mean	min	max
4 h after light	7.73445	7.631889999999999	7.935639999999999
8 h after light	8.135983333333334	8.07342	8.18914
12 h after light	8.288683333333333	8.18613	8.354510000000001
4 h after dark	8.387803333333334	8.36337	8.40943
8 h after dark	8.255973333333333	8.13296	8.374789999999999
12 h after dark	8.05888	7.8622	8.191989999999999