condition mean min max ZT0-3 82.73169999999999 82.73169999999999 82.73169999999999 ZT4-7 94.79835 94.79835 94.79835 ZT8-11 78.38829999999999 78.38829999999999 78.38829999999999 ZT12-15 66.50315 66.50315 66.50315 ZT16-19 71.7786 71.7786 71.7786 ZT20-23 69.7963 69.7963 69.7963