Hi all,

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Did anyone record a SID yesterday (20th April) at 19:00?

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There wasn't an Xray flare from the Sun at that time, but I recorded a SID as shown on the plot but

only on 3 out of the 8 freqs. I monitor.

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There was a glitch in the mag field recorded on the Mull magnetometer at the same time, but not a very strong one.

Very curious.

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It doesn't seem to be a GRB as I couldn't find one recorded yesterday.

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Any ideas?

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Cheers,

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Mark