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