fz=(HIGH-PRE)/PRE;
IF(fz<0) fz=0;
gz=(LOW-PRE)/PRE;
IF(gz>0) gz=0;
IF(gz<-0.1) gz=-0.099;
IF(fz>0.1) fz=0.099;
DRAWLINE(fz<=0.1,fz,gz<=0.1,gz),colorred;
m1:MA(fz,1),colorwhite;
m2:MA(gz,1),colorwhite;
m3:MA(0,1),colorwhite;
Cj=vol/SHGZG;
m4:MA(Cj,1),colorgreen;