What do journal rankings show?
This page lists journals where John H Zhang ranks among the global top 100, by peer-reviewed article count, peer-reviewed citation count, or most cited peer-reviewed article within that journal. A low rank indicates John H Zhang is among the most productive or highly cited authors in that journal.
What do A pos and C pos mean?
The # column is the rank of each listed entry for John H Zhang — rank 1 means this entry is where John H Zhang has the most articles or citations. A pos and C pos show the reciprocal: the position of John H Zhang within that entry's own ranked list, by articles and citations respectively. A low value means John H Zhang is among the most prominent contributors for that entry.