calculation: pp=(high+low+close)/3 r1=2*pp-low r2=pp+high-low r3=2*pp+high-2*low s1=2*pp-high s2=pp+low-high s3=2*pp+low-2*high where: pp—the central ax**(any price can perform as it);r1,r2,r3—the 1st,2nd and 3rd levels of res**tance;s1,s2,s3—the 1st,2nd and 3rd ... 20210311