Topband: Verticals and Radials

[Bill Gerhold]

What would be the radiation pattern of a vertical with
ground radials in a 180 degree arc.  That is, 60 radials
on only (1) side of the vertical with no radials and average
ground in the other 180 degrees.

In addition, how would this affect the efficiency of the
antenna.

I would imagine the antenna would be somewhat directional
in the direction of the 60 radials and somewhat nulled in
the non-radial area.  Just curious.

Bill
K2WH