condition mean min max ZT0-3 61.682975410833336 61.265989385 62.09996143666667 ZT4-7 82.734541965 77.61158530333334 87.85749862666665 ZT8-11 107.31037656000001 104.78927987 109.83147325 ZT12-15 77.31764053166667 75.02668309 79.60859797333333 ZT16-19 88.67456030833333 81.38100631 95.96811430666666 ZT20-23 117.76901689000002 108.74561768000001 126.79241610000001