A Statistical Analysis of Spiral Spots on Solar Disc

After adding the data observed in the last four years to article¹,We reexamined the previous results and concluded as follows:1.The longitudinal distributions of spiral spots on solar disc are generally the same as that of the sunspot groups with area Sp≥400,but the effect of their active longitudes seems to be more obvious.2.The differential rotation has a greater influence on the formation of the spiral patterns than Coriolis force does.3.The Statistical directions of emerged-twisted vector of spiral spots in,the Southern and northern hemispheres synchronously change themselves with a period of about two years.This period has also been detected in other solar observations.