Halogen Occultation Experiment ozone channel validation

B. Bergqvist, B. Galle, M. Carleer, C. Clerbaux, R. Colin, C. Fayt, F. Goutail, M. Nunes Pinharanda, J.P. Pommereau, M. Hausmann, U. Platt, I. Pundt, T. Rudolph, C. Hermans, P.C. Simon, A.C. Vandaele, J.M.C. Plane and N. Smith