condition mean min max ZT0-3 519.515 504.021 535.009 ZT4-7 566.0715 566.0715 566.0715 ZT8-11 424.0135 424.0135 424.0135 ZT12-15 0 0 0 ZT16-19 329.0715 329.0715 329.0715 ZT20-23 483.0955 483.0955 483.0955