Comparison of CLAES preliminary N2O5 data with correlative data and a model by Kumer, J, Mergenthaler, J, Roche, A, Nightingale, R, Zele, F, Gille, J, Massie, S, Bailey, P, Connell, P, Gunson, MR, Abrams, M, Toon, G, Sen, B, Blavier, J, Smith, SE, Taylor, F