  The Pierre Auger Observatory has recently reported the detection of a dipole
anisotropy in the arrival directions of cosmic rays above 8 EeV with a
post-trial significance of more than 5.2$\sigma$. This observation has profound
consequences for the distribution and composition of candidate sources of
cosmic rays above the ankle (3-5 EeV). In this paper we search for the presence
of anisotropies on all angular scales in public Auger data. The analysis
follows a likelihood-based reconstruction method that automatically accounts
for variations in the observatory's angular acceptance and background rate. Our
best-fit dipole anisotropy in the equatorial plane has an amplitude of 5.3
$\pm$ 1.3 percent and right ascension angle of 103 $\pm$ 15 degrees, consistent
with the results of the Pierre Auger Collaboration. We do not find evidence for
the presence of medium- or small-scale anisotropies. The method outlined in
this paper is well-suited for the future analyses of cosmic ray anisotropies
below the ankle, where cosmic ray detection in surface arrays is not fully
efficient and dominated by systematic uncertainties.
