condition mean min max ZT0-3 399.55 399.55 399.55 ZT4-7 354.0 354.0 354.0 ZT8-11 324.6 324.6 324.6 ZT12-15 487.35 487.35 487.35 ZT16-19 538.8 538.8 538.8 ZT20-23 510.65 510.65 510.65