Using the fast latitude scan period of the Ulysses spacecraft, the occurren
ce of magnetic holes in the solar wind is investigated from -80 degrees to
+80 degrees hello-latitude. Near the ecliptic, the large average value and
the large variations of the hole count rate appear to be correlated with in
teraction regions. It is found, however, that at 30 degrees north and south
latitude, approximately, the hole count rate drops to about 10% of that in
the low latitude region and stays constant at this level to near the poles
. The small but non-zero hole count rate at high hello-latitudes indicates
that these holes were formed by processes other than the large scale dynami
c solar wind features operating in the ecliptic region.