condition mean min max ZT0-3 148.51233333333334 112.1465 171.671 ZT4-7 111.73949999999999 111.73949999999999 111.73949999999999 ZT8-11 95.80414999999999 95.80414999999999 95.80414999999999 ZT12-15 89.218675 72.18035 106.257 ZT16-19 99.09424999999999 99.09424999999999 99.09424999999999 ZT20-23 124.15899999999999 124.15899999999999 124.15899999999999