  When suitably rescaled, the distribution of the angular gaps between branches
of off-lattice radial DLA is shown to approach a size-independent limit. The
power-law expected from an asymptotic fractal dimension D=1.71 arises only for
very small angular gaps, which occur only for clusters significantly larger
than one million particles. Intermediate size gaps exhibit an effective
dimension around 1.66, even for cluster sizes going to infinity. They dominate
the distribution for clusters with less than a million particles. The largest
gap approaches a finite limit extremely slowly, with a correction of order
M^{-0.17}, where M is the cluster mass.
