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