Table 3.

Relationships between individual factors measured and branch regrowth for all species and individual species.

Variable	Effect on	All species		F. pennsylvanica		A. platanoides		A. saccharinum
		P	r²	P	_r2	P	_r2	P	_r2
Species	Annual length	<0.001		Na		Na		Na
Time	Annual length	<0.001	0.17	<00.05	0.01	<0.001	0.05	NS
Regrowth type	Annual length	<0.001		<.001		<0.001		<0.001
Inclination	Annual length	<0.001	0.02	<0.001	0.07	<0.001	0.14	NS
Diameter PS	Annual length	<0.001	0.02	NS	NS	NS	NS	<0.001	0.06
Branch height	Annual length	<0.001	0.02	NS	NS	<0.05	0.02	<0.05	0.04
DBH	Annual length	NS		NS		NS		NS
Crown volume	Annual length	NS		NS		NS		NS
Building height	Annual length	NS		NS		NS		NS
Building distance	Annual length	NS		NS		NS		NS
% soil exposure	Annual length	NS		NS		NS		NS
Stem distance	Annual length	NS		NS		NS		NS
Trim type	Annual length	NS		NS		NS		NS
V-trim azimuth	Annual length	NS		NS		NS		NS
Branch azimuth	Annual length	NS		NS		NS		NS

Note: Time = number of years since last pruning episode; Stem distance = the distance between the main stems in a V-trim type tree.