Data on tree size, competition and mistletoe occurence on whole trees

Data used in the article to test effects of tree size, neighbourhood competition and distance from nearest infected tree on probability of mistletoe infection on the whole trees (many of them multi-stem polycormons). Tree size is represented by basal area, mean stem basal area and the ranges of the trees/polycormons in given directions. Competition is represented by Hegyi competition index (CI_trees) calculated using basal areas of the whole trees and centres of trees/polycormons as positions. Infection by mistletoe is indicated by 1 = infected, 2 = not infected.