condition mean min max ZT0-3 564.6 564.6 564.6 ZT4-7 552.6 552.6 552.6 ZT8-11 527.25 527.25 527.25 ZT12-15 522.15 522.15 522.15 ZT16-19 548.65 548.65 548.65 ZT20-23 604.3 604.3 604.3