condition mean min max ZT0-3 227.925 227.925 227.925 ZT4-7 332.661 332.661 332.661 ZT8-11 210.7545 210.7545 210.7545 ZT12-15 109.1165 109.1165 109.1165 ZT16-19 57.2224 57.2224 57.2224 ZT20-23 118.96449999999999 118.96449999999999 118.96449999999999