[TangerineSDR] Fwd: another 24hour RM3100 run and comparison with Fredericksburg

David Witten wittend at wwrinc.com
Mon Sep 14 22:48:18 EDT 2020

I don't believe that my previous post carried the file K2KGJ provided.

---------- Forwarded message ---------
From: Julius Madey <hillfox at fairpoint.net>
Date: Mon, Sep 14, 2020 at 4:26 PM
Subject: another 24hour RM3100 run and comparison with Fredericksburg
To: Kim, Hyomin <hmkim at njit.edu>, David Witten <wittend at wwrinc.com>, Dr.
Nathaniel A. Frissell Ph.D. <nathaniel.frissell at scranton.edu>, Dave Larsen <
kv0s.dave at gmail.com>

I was hoping to record a relatively short term event but missed one about
10 days ago.  However, there was a good run on the 12th with an ~30nT
excursion on the Y axis lasting about an hour.  In the attached pdf, the
three axes of the RM3100 again track the Fredericksburg magnetometer
station data quite closely.  The RM3100 plotted data points are simple
running 60second averages and not the more complex filtering algorithm used
by Intermagnet stations for their 1 minute data points.

The vertical axes scales on all plots are as close as I could match them by
eye in cutting and pasting.

I believe the value to the right on the Intermagnet plot is the mean for
the 24 hour period.  I did not try to compute a 24 hour mean.

One of the products for the future for general interest would be a running
plot like those available on Intermagnet.org.  I guess we can dream a bit.

Jules - K2KGJ
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