condition mean min max ZT0-3 147.48258333333334 105.83425 182.48250000000002 ZT4-7 106.09049999999999 106.09049999999999 106.09049999999999 ZT8-11 132.6765 132.6765 132.6765 ZT12-15 191.37875 180.6925 202.065 ZT16-19 235.5395 235.5395 235.5395 ZT20-23 246.538 246.538 246.538