自创副图指标！公式信号只供参考，不构成买卖标准！公式完全加密不喜勿下！
{通达信波段通道（指标副图贴图）加密}
N:=20;
MID:=MA(CLOSE,N);
UPPER:=MID + 2*STD(CLOSE,N);
LOWER:=MID - 2*STD(CLOSE,N);
UPPER2:=MID + 3*STD(CLOSE,N);
LOWER2:=MID - 3*STD(CLOSE,N);
STICKLINE(C>=O, LOWER, UPPER, 0.8, 1), COLORRED;
STICKLINE(C<O, LOWER, UPPER, 0.8, 0), COLORCYAN;
MID,COLORWHITE,LINETHICK2;
UPPER,COLORYELLOW;
LOWER,COLORYELLOW;
UPPER2,COLORGREEN;
LOWER2,COLORGREEN;
