condition	mean	min	max
4 h after light	7.825153333333334	7.651210000000001	8.041839999999999
8 h after light	7.450383333333334	7.336130000000001	7.63707
12 h after light	7.214923333333334	7.143960000000001	7.284510000000001
4 h after dark	6.964973333333333	6.86947	7.11325
8 h after dark	7.0107	6.95142	7.122960000000001
12 h after dark	7.00513	6.956930000000001	7.07242