condition	mean	min	max
4 h after light	7.43701	7.30417	7.696789999999999
8 h after light	7.67607	7.46051	8.09874
12 h after light	7.620656666666666	7.3803399999999995	7.94905
4 h after dark	7.65085	7.3216	8.044880000000001
8 h after dark	7.6083799999999995	7.281210000000001	7.99799
12 h after dark	7.295933333333333	7.079389999999999	7.65539