  We have analyzed the highest-quality images to be obtained by Cassini of
Saturn's main rings after the Saturn Orbit Insertion (SOI) and before the Ring
Grazing Orbits (RGO) and Grand Finale (GF). These images are comparable to
those of SOI in fidelity, though not in nominal resolution, due to their high
signal-to-noise. We have systematically searched for radial structure in these
images by reducing them to a single dimension (distance from Saturn's center)
and using the continuous wavelet transform technique. We discuss the resonant
theory of spiral waves and discuss the proper method for deriving the local
surface density from the wavelet signature of a spiral wave. We present 1)
individual features of interest found in our data, including several classes of
waves that have not previously been reported; 2) a radial profile of surface
density in Saturn's rings, which is more definitive for the A ring than any
previously presented and which corrects some errors in previous profiles; and
3) an atlas of resonant features that indicates whether each feature is or is
not expressed in the rings and that is organized graphically by resonance
strength.
