condition mean min max ZT0-3 0.97576809675 0.752018011 1.1995181824999999 ZT4-7 7.34653318875 4.623135545 10.069930832499999 ZT8-11 13.851511559999999 13.2272625 14.475760619999999 ZT12-15 16.9026166675 13.104964110000001 20.700269225 ZT16-19 22.9790793975 20.599473085 25.35868571 ZT20-23 29.18435995 26.106214655000002 32.262505245