condition mean min max ZT0-3 1.09375 1.09375 1.09375 ZT4-7 0.8021115 0.8021115 0.8021115 ZT8-11 1.09464 1.09464 1.09464 ZT12-15 0.7530245 0.7530245 0.7530245 ZT16-19 1.511845 1.511845 1.511845 ZT20-23 1.3823699999999999 1.3823699999999999 1.3823699999999999