condition mean min max ZT0-3 72.951512 72.951512 72.951512 ZT4-7 36.8484415 36.8484415 36.8484415 ZT8-11 29.463348 29.463348 29.463348 ZT12-15 33.793836 33.793836 33.793836 ZT16-19 23.9717075 23.9717075 23.9717075 ZT20-23 24.0331865 24.0331865 24.0331865