condition	mean	min	max
4 h after light	7.3622499999999995	7.31854	7.41339
8 h after light	7.58653	7.408239999999999	7.75467
12 h after light	7.4178033333333335	7.32694	7.54294
4 h after dark	7.280003333333334	7.150010000000001	7.386760000000001
8 h after dark	7.130733333333334	7.073989999999999	7.18048
12 h after dark	7.121276666666667	7.007110000000001	7.23567