condition mean min max ZT0-3 46.361275543000005 4.75628921 87.966261876 ZT4-7 141.02388357499999 131.49424369999997 150.55352345 ZT8-11 63.06584251125 36.1445145275 89.98717049499999 ZT12-15 7.719982751749999 7.5930109439999995 7.846954559499999 ZT16-19 10.410428776500002 8.821133848 11.999723705000001 ZT20-23 9.69176282575 7.8007172715 11.58280838