REMARKS
OBSERVER_CODE PSRNAME EFFECTIVE_SINCE EFFECTIVE_UNTIL DESCRIPTION

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# example entry for one pulsar
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G "PSR J0534+2200" 54321.987654 54567.89012 "Excessive timing noise"

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# another example
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A "PSR J0633+1746" 55000 56010 "Glitch suspected"
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# and go on...
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