The Nancay event:

http://www.obs-nancay.fr/quicklook_jupiter/2009/06/J090627.png

from about 0630 to 0645 UT, is well below the Io-A region. It could be non-Io.

See the attached Jupiter Radio plot.

You may recall John Avellone's description of an "odd" event about two hours later:

"...Monitored last night for the predicted Io-A/C event.  Best RJ events noted between 0820 & 0826 UT. (After lots of T-storm activity.)  Chart attached.  Odd thing is that, according to the "RadioJupiter Pro 3" prediction program, this time interval corresponds to a position on the CML - Io Phase Plane (CML ~ 180* // Io Phase ~ 280*) that falls in the low probability gap between the high probability zones for Io-A & Io-C.  The event signature looks like "L-type bursts" however.  Anyone else see anything? ..."
 
And Wes Greenman's comment:

"...Just remember, there is much Jupiter emission that is not Io related.  For the first 6 or 7 years we collected all Jupiter emissions.  All were a mixture of non-Io sources and Io-sources.  The prediction tables are just a guide, not a gospel.  There are no money back guarantee's ..."

Many thanks to Laurent Denis for fixing the time axis bug.

Victor Herrero

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