Look at your 4 papers that have 4 citations. Which one is closest to 5 citations? Email 10 colleagues in your field and ask them to read it. That single push may be the difference between staying at "average" and joining the "top."
Thus, if you are in a low-citation field, you are closer to the “top” of your local cohort with an h‑index of 4 than a biomedical researcher would be. hindex of 4 top
Yes. You are in the top quartile. Celebrate it, but don't stop. Look at your 4 papers that have 4 citations
A score of 4 means your top four most-cited works have all reached a citation threshold of 4. hindex of 4 top