condition mean min max ZT0-3 212.22050000000002 212.22050000000002 212.22050000000002 ZT4-7 130.7025 130.7025 130.7025 ZT8-11 142.779 142.779 142.779 ZT12-15 138.9375 138.9375 138.9375 ZT16-19 312.1355 312.1355 312.1355 ZT20-23 196.353 196.353 196.353