  We present a measurement of neutrino oscillation parameters with the
Super-Kamiokande detector using atmospheric neutrinos from the complete
pure-water SK I-V (April 1996-July 2020) data set, including events from an
expanded fiducial volume. The data set corresponds to 6511.3 live days and an
exposure of 484.2 kiloton-years. Measurements of the neutrino oscillation
parameters $\Delta m^2_{32}$, $\sin^2\theta_{23}$, $\sin^2 \theta_{13}$,
$\delta_{CP}$, and the preference for the neutrino mass ordering are presented
with atmospheric neutrino data alone, and with constraints on $\sin^2
\theta_{13}$ from reactor neutrino experiments. Our analysis including
constraints on $\sin^2 \theta_{13}$ favors the normal mass ordering at the
92.3% level.

High Energy Physics - Experiment