Figure 2 Number of sample
plots of ash trees (all ash species combined) within each EAB
infestation degree category by (a) latitudinal range, (b) altitudinal
range, (c) age class, and (d) DBH class. The numbers of sample plots of
ash trees in each EAB infestation degree category are given above the
heat maps. (See Figure 1 legend for explanation of degrees of
EAB infestation).