condition	mean	min	max
4 h after light	6.515616666666666	6.33862	6.63307
8 h after light	6.36481	6.12614	6.49739
12 h after light	6.4479500000000005	6.284590000000001	6.633380000000001
4 h after dark	6.678533333333333	6.55832	6.88532
8 h after dark	6.53846	6.424169999999999	6.6169199999999995
12 h after dark	6.753076666666666	6.60915	6.92294