condition mean min max ZT0-3 345.4 345.4 345.4 ZT4-7 170.8 170.8 170.8 ZT8-11 159.15 159.15 159.15 ZT12-15 151.25 151.25 151.25 ZT16-19 275.8 275.8 275.8 ZT20-23 371.79999999999995 371.79999999999995 371.79999999999995