Concerning the first comment of referee 3 (usefulness of total ozone derived from profiling algorithm), I am not really convinced by the argument that accurate total ozone is a prerequisite for profile inversion. Why not stressing the point you make in the discussion, that ozone profiling algorithms have a potential for being more accurate than "simple" total ozone algorithms because they use a broader spectral range (so inherently have more information content). This should in my view be the key motivation for including integrated profiles in the total ozone comparison.