condition	mean	min	max
4 h after light	8.34028	8.27597	8.46604
8 h after light	8.528826666666667	8.48515	8.57172
12 h after light	8.567003333333334	8.53265	8.6087
4 h after dark	8.19998	8.154589999999999	8.22938
8 h after dark	7.881426666666667	7.609560000000001	8.08118
12 h after dark	7.830993333333334	7.6334800000000005	8.04387