We present a combined analysis of fully-contained, partially-contained and upward-going muon atmospheric neutrino data from a 1489d exposure of the Super-Kamiokande detector. The data samples span roughly five decades in neutrino energy, from 100MeV to 10eV. A detailed Monte Carlo comparison is described and presented. The data is fit to the Monte Carlo expectation, and is found to be consistent with neutrino oscillations of νμντ with sin22θ>0.92 and 1.5×10-3<Δm2<3.4×10-3eV2 at 90% confidence level. © 2005 The American Physical Society.