condition mean min max ZT0-3 497.6645 497.6645 497.6645 ZT4-7 441.8315 441.8315 441.8315 ZT8-11 341.17 341.17 341.17 ZT12-15 307.837 307.837 307.837 ZT16-19 427.716 427.716 427.716 ZT20-23 501.5345 501.5345 501.5345