condition mean min max ZT0-3 119.06915601666665 117.12305213333333 121.01525989999999 ZT4-7 107.403179325 106.5916896 108.21466905 ZT8-11 117.652266 114.20621630000001 121.0983157 ZT12-15 189.10817435 169.14763626666667 209.06871243333333 ZT16-19 257.5304400333333 248.01483986666665 267.0460402 ZT20-23 225.7069253 223.59791629999998 227.8159343