Table 5.

Agreement levels showing percentage of agreement between certified arborists and volunteers and between the certified arborists when examining individual variables of sample trees.

VariableVolunteers/2 cert. arborists Agreement level2 cert. arborists/10 cert. arborists Agreement level
Genus94%100%
Genus & species80%98%
Condition83%89%
Management need75%86%
Weak crotch90%80%
Cavity92%93%
Root zone cover material82%98%