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Fig. A.1:

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Four OH 18-cm lines observed in comet F3 with the NRT averaged from 18 to 27 July 2020. The expected statistical relative intensities of the 1 667 : 1 665 : 1 612 : 1 720 MHz lines are 9 : 5 : 1 : 1, which is in good agreement with the displayed observations.
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