<div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <strong class="gmail_sendername" dir="auto">David Witten</strong> <span dir="auto"><<a href="mailto:wittend@wwrinc.com">wittend@wwrinc.com</a>></span><br>Date: Mon, Sep 14, 2020 at 4:37 PM<br>Subject: Re: another 24hour RM3100 run and comparison with Fredericksburg<br>To: Julius Madey <<a href="mailto:hillfox@fairpoint.net">hillfox@fairpoint.net</a>><br>Cc: Kim, Hyomin <<a href="mailto:hmkim@njit.edu">hmkim@njit.edu</a>>, Dr. Nathaniel A. Frissell Ph.D. <<a href="mailto:nathaniel.frissell@scranton.edu">nathaniel.frissell@scranton.edu</a>>, Dave Larsen <<a href="mailto:kv0s.dave@gmail.com">kv0s.dave@gmail.com</a>><br></div><br><br><div dir="ltr">Jules,<div><br></div><div>Sure looks good to me.</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="font-family:Arial">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. </span></blockquote><div><br></div><div>I don't know why not. I want to work on something a little different. But I need to verify some reliable sensors here first and fix the current code.</div><div><br></div><div>Dave</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Sep 14, 2020 at 4:26 PM Julius Madey <<a href="mailto:hillfox@fairpoint.net" target="_blank">hillfox@fairpoint.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<font face="Arial">All, <br>
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. <br>
<br>
The vertical axes scales on all plots are as close as I could
match them by eye in cutting and pasting.<br>
<br>
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.<br>
<br>
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. <br>
<br>
Jules - K2KGJ<br>
</font>
</div>
</blockquote></div>
</div></div>