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Fig. 6

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Gas production rates of H2O vs time, calculated for our observing periods on 2009-02-16 and 2009-03-04 (solid, black diamonds). We also plot H2O production rates from Combi et al. (2009, circles), Schleicher (2009, priv. comm., open squares), Bodewits et al. (2011, filled squares), Ootsubo et al. (2010, filled triangle) and Bonev et al. (2009, solid, grey diamond). The dashed vertical line indicates the date of the perihelion passage of the comet.

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