condition mean min max ZT0-3 87.8306 87.8306 87.8306 ZT4-7 41.9614 41.9614 41.9614 ZT8-11 28.3639 28.3639 28.3639 ZT12-15 19.8915 19.8915 19.8915 ZT16-19 66.0322 66.0322 66.0322 ZT20-23 83.08019999999999 83.08019999999999 83.08019999999999