condition mean min max ZT0-3 80.2574350375 72.788221135 87.72664894 ZT4-7 98.08007995 95.96858372 100.19157618 ZT8-11 102.02901832500001 99.88959267 104.16844398 ZT12-15 93.16385098 85.16322723666667 101.16447472333333 ZT16-19 84.09702927333333 80.26230132666667 87.93175722000001 ZT20-23 72.00024357833334 64.80126055666666 79.1992266