M:=20;N:=2;MID :MA(C,M);UPPER: MID + N*STD(C,M);LOWER: MID - N*STD(C,M);UP1:MID+STD(C,M),POINTDOT;LW1:MID-STD(C,M),POINTDOT;UP2:MID + 3*STD(C,M)DOTLINE;