  We present conductance-matrix measurements of a three-terminal
superconductor-semiconductor hybrid device consisting of two normal leads and
one superconducting lead. Using a symmetry decomposition of the conductance, we
find that the antisymmetric components of pairs of local and nonlocal
conductances match at energies below the superconducting gap, consistent with
expectations based on a non-interacting scattering matrix approach. Further,
the local charge character of Andreev bound states is extracted from the
symmetry-decomposed conductance data and is found to be similar at both ends of
the device and tunable with gate voltage. Finally, we measure the conductance
matrix as a function of magnetic field and identify correlated splittings in
low-energy features, demonstrating how conductance-matrix measurements can
complement traditional tunneling-probe measurements in the search for Majorana
zero modes.
