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