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Fig. 3

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H2O(110−101) line at 556935.988 MHz observed with Odin in comet 67P on 17.00 November 2021. The vertical axis is the main beam brightness temperature in kelvins, and the horizontal axis is the Doppler velocity in the rest frame of the comet with respect to the line. The average pointing offset during the 2 min drift of the comet through the beam is 38″.

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