condition mean min max ZT0-3 5.26957419675 4.7461440795000005 5.793004314 ZT4-7 10.22124830425 7.8189455485 12.62355106 ZT8-11 16.49912673 13.54394863 19.454304829999998 ZT12-15 23.418575042500002 22.54862095 24.288529135 ZT16-19 36.5195572625 32.220070230000005 40.819044295 ZT20-23 72.55125144499999 55.762225555 89.340277335