condition mean min max ZT0-3 0.0095469105 0.0 0.019093821 ZT4-7 0.004672170749999999 0.0 0.009344341499999999 ZT8-11 0.23314144650000002 0.1089106645 0.3573722285 ZT12-15 0.48078563074999997 0.46615860899999995 0.4954126525 ZT16-19 0.26394561325 0.2155562765 0.31233495 ZT20-23 0.10795027424999999 0.08655494 0.1293456085