  A comparison of a 19 GHz full-sky map with the WMAP satellite K band (23 GHz)
map indicates that the bulk of the 20 GHz emission within 7 degrees of the
Galactic plane has an inverted (rising) spectrum with an average spectral index
alpha = 0.21 +/- 0.05. While such a spectrum is inconsistent with steep
spectrum synchrotron (alpha ~ -0.7) and flat spectrum free-free (alpha ~ -0.1)
emission, it is consistent with various models of electric dipole emission from
thermally excited spinning dust grains as well as models of magnetic dipole
emission from ferromagnetic dust grains. Several regions in the plane, e.g.,
near the Cygnus arm, have spectra with even larger alpha. While low signal to
noise of the 19 GHz data precludes a detailed map of spectral index, especially
off the Galactic plane, it appears that the bulk of the emission in the plane
is correlated with the morphology of dust. Regions with higher 23 GHz flux tend
to have harder spectra. Off the plane, at Galactic latitudes between 7 and 20
degree the spectrum steepens to alpha = -0.16 +/- 0.15.
