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