What do A pos and C pos mean?
The # column is the rank of each listed entry for Npj Computational Materials — rank 1 means this entry is where Npj Computational Materials has the most articles or citations. A pos and C pos show the reciprocal: the position of Npj Computational Materials within that entry's own ranked list, by articles and citations respectively. A low value means Npj Computational Materials is among the most prominent contributors for that entry.