condition mean min max ZT0-3 0.8813312499999999 0.7477975 1.014865 ZT4-7 0.9838749999999999 0.9838749999999999 0.9838749999999999 ZT8-11 1.4456565 1.4456565 1.4456565 ZT12-15 0 0 0 ZT16-19 1.56253 1.56253 1.56253 ZT20-23 1.0636915 1.0636915 1.0636915