condition mean min max ZT0-3 454.45 454.45 454.45 ZT4-7 219.3 219.3 219.3 ZT8-11 177.2 177.2 177.2 ZT12-15 227.25 227.25 227.25 ZT16-19 301.4 301.4 301.4 ZT20-23 475.55 475.55 475.55