condition	mean	min	max
4 h after light	7.4287633333333325	7.17051	7.706339999999999
8 h after light	6.92914	6.547280000000001	7.45453
12 h after light	7.298640000000001	7.04885	7.501710000000001
4 h after dark	7.026619999999999	6.8841399999999995	7.13903
8 h after dark	7.29006	7.165360000000001	7.48395
12 h after dark	7.191963333333333	6.8455699999999995	7.575