It is vital to remember that an h-index of 4 means different things depending on your discipline.
An h-index is cumulative. A "4" achieved within two years of your first paper is much more impressive than a "4" held after twenty years in the field. How to Move from 4 to 5 (and Beyond) h-index of 4
Each of those 4 publications must have at least . It is vital to remember that an h-index