贝塔:=C/REF(C,1)/(INDEXC/REF(INDEXC,1));
贝塔系数:FORCAST(SMA(贝塔,8,1),18)*100-100;
贝塔长线:EMA(贝塔系数,13);
贝塔差:2*(贝塔系数-贝塔长线),COLORSTICK;