condition mean min max ZT0-3 88.11738333333334 83.122 94.3101 ZT4-7 99.29195 99.29195 99.29195 ZT8-11 96.40725 96.40725 96.40725 ZT12-15 103.29145 102.7168 103.86609999999999 ZT16-19 102.94115 102.94115 102.94115 ZT20-23 91.12604999999999 91.12604999999999 91.12604999999999