condition mean min max ZT0-3 739.4259999999999 739.4259999999999 739.4259999999999 ZT4-7 713.777 713.777 713.777 ZT8-11 606.674 606.674 606.674 ZT12-15 641.153 641.153 641.153 ZT16-19 688.7874999999999 688.7874999999999 688.7874999999999 ZT20-23 752.8895 752.8895 752.8895