CP158: OnPageH1ToH6ExactMatches

Number of exact matches in web page H1 to H6 tags

Correlates the number of exact matches in the web page H1 to H6 tags as a factor.

This factor correlates the number of exact matches in H1,H2,H3,H4,H5, and H6 tags (in the HTML source) with rankings.

The matches counted include any of the relevant hits highlighted by Google in the search results that exactly match the whole content of the zone.

You can learn more about the targeted zone for this factor at: https://www.w3schools.com/tags/tag_hn.asp.