condition mean min max ZT0-3 16.2754251075 15.73044733 16.820402885 ZT4-7 19.443241415000003 16.547276710000002 22.33920612 ZT8-11 33.96666349 30.321711289999996 37.61161569 ZT12-15 32.58545214 26.259783155 38.911121125 ZT16-19 61.53370321 40.79843448 82.26897194 ZT20-23 123.4629383575 107.29342511499999 139.6324516