condition mean min max ZT0-3 185.52600485000002 175.18253370000002 195.86947600000002 ZT4-7 125.998225075 110.48638888333333 141.51006126666667 ZT8-11 82.8118176 61.23183207333334 104.39180312666666 ZT12-15 53.77432116666667 51.84761282333333 55.70102951 ZT16-19 63.02915788833333 56.38702928 69.67128649666667 ZT20-23 103.269197805 80.16517517999999 126.37322043