condition	mean	min	max
4 h after light	7.50104	6.89739	7.8461300000000005
8 h after light	7.72907	7.52906	7.8562899999999996
12 h after light	7.873186666666667	7.57268	8.04715
4 h after dark	7.79579	7.5498199999999995	7.9532
8 h after dark	8.053896666666667	7.7542800000000005	8.24382
12 h after dark	8.237653333333332	7.87259	8.424439999999999