condition mean min max ZT0-3 47.57098333333333 37.7218 58.77675 ZT4-7 35.9791 35.9791 35.9791 ZT8-11 33.02135 33.02135 33.02135 ZT12-15 93.9766 87.38325 100.56995 ZT16-19 76.26474999999999 76.26474999999999 76.26474999999999 ZT20-23 87.3346 87.3346 87.3346