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