<div dir="ltr">Ryan,<div>Thanks for the curiosity. The GSM 19, Overhauser Total Field Magnetometer is different from the Fluxgate in that it is actually a frequency measurement, while the Fluxgate outputs a near DC voltage. Because the measurement is a frequency, it has to be heavily band-passed and amplified in order for the frequency to be measured (counted). </div><div><br></div><div>Consequently, if the frequency is corrupted by an outside source (artificial disturbance), the noise will 'swamp' the signal processor in the electronics, rendering the measurement useless, and discarded by the intelligence in the magnetometer. This leads to a missing value in our acquisition system. </div><div><br></div><div>I hope this helps you and others understand how come there are missing values. Because of the disturbances are short, and isolated (1609 through 1642 UT), I am still of the opinion there is some activity taking place in close proximity to the observatory. But, close is a relative term, offset by amplitude!</div><div><br></div><div>Regards,</div><div>Ed </div><br><div class="gmail_quote"><div dir="ltr">On Tue, Oct 23, 2018 at 10:16 AM Ryan Kauffman <<a href="mailto:RKauffman@slb.com">RKauffman@slb.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple">
<div class="m_1496389381004702725WordSection1">
<p class="MsoNormal">Hey Ed,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I don't understand a lot of what data values are what and how they affect each other, but near as I can tell F values are the intensity of the magnetic field at that given time, I have been off work for medical and have been following this
missing F value situation because I am curious. While I was still home and the first run of disturbances were noted, I remembered recently they had an earthquake that was actually a decent magnitude and noticeable to the guys in the shop, which is going to
be accompanied by lots of related unfelt seismic activity. I started trying to go back and find times in the Alaska earthquake center log, but do to the limit of what I could do on my phone, wasn’t able to make the Alaska earthquake center site work enough
to do any research. But I am currently back at work (light duty so not in the shop or able to go to observatory) and looked them up, and I see no correlation in times of recent earthquakes in the area. So now I am just asking out of curiosity, what is something
that would externally effect F values? Internally it could be faulty equipment. But what is your hunch as to what it maybe?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Regards, Ryan Kauffman <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><b>From:</b> Sauter, Edward <<a href="mailto:esauter@usgs.gov" target="_blank">esauter@usgs.gov</a>> <br>
<b>Sent:</b> Tuesday, October 23, 2018 7:49 AM<br>
<b>To:</b> Adam Aucoin <<a href="mailto:AAucoin@slb.com" target="_blank">AAucoin@slb.com</a>>; Bonnie Baker <<a href="mailto:BBaker14@slb.com" target="_blank">BBaker14@slb.com</a>>; Brian Olson <<a href="mailto:bolson@slb.com" target="_blank">bolson@slb.com</a>>; Kory Simpson <<a href="mailto:KSimpson@slb.com" target="_blank">KSimpson@slb.com</a>>; Lisa Tschosik <<a href="mailto:LTschosik@slb.com" target="_blank">LTschosik@slb.com</a>>; Orren Hyatt <<a href="mailto:OHyatt@slb.com" target="_blank">OHyatt@slb.com</a>>; Ryan Kauffman <<a href="mailto:RKauffman@slb.com" target="_blank">RKauffman@slb.com</a>><br>
<b>Cc:</b> Karen Remick <<a href="mailto:kjoutflow2004@yahoo.com" target="_blank">kjoutflow2004@yahoo.com</a>>; GS-HAZ Geomagnetism Federal Employees <<a href="mailto:geomag-daily@geohazards.usgs.gov" target="_blank">geomag-daily@geohazards.usgs.gov</a>><br>
<b>Subject:</b> [Ext] Deadhorse Missing F<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">They're baaacckk!!!<u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"> <br></p><p class="MsoNormal"><u></u></p>
<div>
<div>
<p class="MsoNormal">Observatory: DED<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Warning: Channels with gaps, or older than warning-threshold H E Z F seconds<u></u><u></u></p>
<table class="m_1496389381004702725MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<thead>
<tr>
<td style="border:solid black 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt"></td>
<td style="border:solid black 1.0pt;border-left:none;padding:1.5pt 1.5pt 1.5pt 1.5pt">
</td>
<td colspan="3" style="border:solid black 1.0pt;border-left:none;padding:1.5pt 1.5pt 1.5pt 1.5pt">
<p class="MsoNormal" align="center" style="text-align:center"><b>Gap<u></u><u></u></b></p>
</td>
<td style="border:solid black 1.0pt;border-left:none;padding:1.5pt 1.5pt 1.5pt 1.5pt">
</td>
</tr>
<tr>
<td style="border:solid black 1.0pt;border-top:none;padding:1.5pt 1.5pt 1.5pt 1.5pt">
<p class="MsoNormal" align="center" style="text-align:center"><b>Channel<u></u><u></u></b></p>
</td>
<td style="border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
<p class="MsoNormal" align="center" style="text-align:center"><b>Last Time Value<u></u><u></u></b></p>
</td>
<td style="border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
<p class="MsoNormal" align="center" style="text-align:center"><b>Count<u></u><u></u></b></p>
</td>
<td style="border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
<p class="MsoNormal" align="center" style="text-align:center"><b>Total Time<u></u><u></u></b></p>
</td>
<td style="border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
<p class="MsoNormal" align="center" style="text-align:center"><b>Percentage<u></u><u></u></b></p>
</td>
<td style="border-top:none;border-left:none;border-bottom:solid black 1.0pt;border-right:solid black 1.0pt;padding:1.5pt 1.5pt 1.5pt 1.5pt">
<p class="MsoNormal" align="center" style="text-align:center"><b>Total Values<u></u><u></u></b></p>
</td>
</tr>
</thead>
<tbody>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">SECONDS <u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt"></td>
<td style="padding:.75pt .75pt .75pt .75pt"></td>
<td style="padding:.75pt .75pt .75pt .75pt"></td>
<td style="padding:.75pt .75pt .75pt .75pt"></td>
<td style="padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">H<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">2018-10-22 23:59:59<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">5<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">5 second<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">0.01%<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">86400<u></u><u></u></p>
</td>
</tr>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">E<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">2018-10-22 23:59:59<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">5<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">5 second<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">0.01%<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">86400<u></u><u></u></p>
</td>
</tr>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">Z<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">2018-10-22 23:59:59<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">5<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">5 second<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">0.01%<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">86400<u></u><u></u></p>
</td>
</tr>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">F<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">2018-10-22 23:59:59<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">153<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">153 second<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">0.18%<u></u><u></u></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" align="center" style="text-align:center">86400<u></u><u></u></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"> SECONDS <br>
Channel: H <br>
2018-10-22 02:03:42 to 2018-10-22 02:03:42 <br>
2018-10-22 06:28:12 to 2018-10-22 06:28:12 <br>
2018-10-22 11:09:29 to 2018-10-22 11:09:29 <br>
2018-10-22 13:02:29 to 2018-10-22 13:02:29 <br>
2018-10-22 20:52:41 to 2018-10-22 20:52:41 <br>
Channel: E <br>
2018-10-22 02:03:42 to 2018-10-22 02:03:42 <br>
2018-10-22 06:28:12 to 2018-10-22 06:28:12 <br>
2018-10-22 11:09:29 to 2018-10-22 11:09:29 <br>
2018-10-22 13:02:29 to 2018-10-22 13:02:29 <br>
2018-10-22 20:52:41 to 2018-10-22 20:52:41 <br>
Channel: Z <br>
2018-10-22 02:03:42 to 2018-10-22 02:03:42 <br>
2018-10-22 06:28:12 to 2018-10-22 06:28:12 <br>
2018-10-22 11:09:29 to 2018-10-22 11:09:29 <br>
2018-10-22 13:02:29 to 2018-10-22 13:02:29 <br>
2018-10-22 20:52:41 to 2018-10-22 20:52:41 <br>
Channel: F <br>
2018-10-22 13:02:30 to 2018-10-22 13:02:30 <br>
2018-10-22 16:09:32 to 2018-10-22 16:09:32 <br>
2018-10-22 16:09:56 to 2018-10-22 16:09:56 <br>
2018-10-22 16:09:58 to 2018-10-22 16:09:58 <br>
2018-10-22 16:10:03 to 2018-10-22 16:10:03 <br>
2018-10-22 16:10:12 to 2018-10-22 16:10:12 <br>
2018-10-22 16:13:07 to 2018-10-22 16:13:07 <br>
2018-10-22 16:13:25 to 2018-10-22 16:13:25 <br>
2018-10-22 16:13:27 to 2018-10-22 16:13:27 <br>
2018-10-22 16:13:30 to 2018-10-22 16:13:30 <br>
2018-10-22 16:13:40 to 2018-10-22 16:13:40 <br>
2018-10-22 16:13:48 to 2018-10-22 16:13:48 <br>
2018-10-22 16:13:52 to 2018-10-22 16:13:52 <br>
2018-10-22 16:13:56 to 2018-10-22 16:13:56 <br>
2018-10-22 16:14:01 to 2018-10-22 16:14:01 <br>
2018-10-22 16:14:10 to 2018-10-22 16:14:10 <br>
2018-10-22 16:14:12 to 2018-10-22 16:14:12 <br>
2018-10-22 16:14:20 to 2018-10-22 16:14:20 <br>
2018-10-22 16:14:28 to 2018-10-22 16:14:28 <br>
2018-10-22 16:14:32 to 2018-10-22 16:14:32 <br>
2018-10-22 16:14:34 to 2018-10-22 16:14:34 <br>
2018-10-22 16:14:38 to 2018-10-22 16:14:38 <br>
2018-10-22 16:14:40 to 2018-10-22 16:14:40 <br>
2018-10-22 16:14:45 to 2018-10-22 16:14:45 <br>
2018-10-22 16:14:48 to 2018-10-22 16:14:48 <br>
2018-10-22 16:14:50 to 2018-10-22 16:14:50 <br>
2018-10-22 16:14:56 to 2018-10-22 16:14:56 <br>
2018-10-22 16:14:58 to 2018-10-22 16:14:58 <br>
2018-10-22 16:15:03 to 2018-10-22 16:15:03 <br>
2018-10-22 16:15:05 to 2018-10-22 16:15:05 <br>
2018-10-22 16:15:08 to 2018-10-22 16:15:08 <br>
2018-10-22 16:15:14 to 2018-10-22 16:15:14 <br>
2018-10-22 16:15:31 to 2018-10-22 16:15:31 <br>
2018-10-22 16:15:37 to 2018-10-22 16:15:37 <br>
2018-10-22 16:15:39 to 2018-10-22 16:15:39 <br>
2018-10-22 16:15:43 to 2018-10-22 16:15:43 <br>
2018-10-22 16:15:51 to 2018-10-22 16:15:51 <br>
2018-10-22 16:15:59 to 2018-10-22 16:15:59 <br>
2018-10-22 16:16:09 to 2018-10-22 16:16:09 <br>
2018-10-22 16:16:28 to 2018-10-22 16:16:28 <br>
2018-10-22 16:16:37 to 2018-10-22 16:16:37 <br>
2018-10-22 16:16:43 to 2018-10-22 16:16:43 <br>
2018-10-22 16:16:57 to 2018-10-22 16:16:57 <br>
2018-10-22 16:17:01 to 2018-10-22 16:17:01 <br>
2018-10-22 16:17:06 to 2018-10-22 16:17:06 <br>
2018-10-22 16:17:08 to 2018-10-22 16:17:08 <br>
2018-10-22 16:17:11 to 2018-10-22 16:17:11 <br>
2018-10-22 16:17:13 to 2018-10-22 16:17:13 <br>
2018-10-22 16:17:16 to 2018-10-22 16:17:16 <br>
2018-10-22 16:17:23 to 2018-10-22 16:17:23 <br>
2018-10-22 16:17:26 to 2018-10-22 16:17:26 <br>
2018-10-22 16:17:33 to 2018-10-22 16:17:33 <br>
2018-10-22 16:17:35 to 2018-10-22 16:17:35 <br>
2018-10-22 16:17:42 to 2018-10-22 16:17:42 <br>
2018-10-22 16:17:52 to 2018-10-22 16:17:52 <br>
2018-10-22 16:17:58 to 2018-10-22 16:17:58 <br>
2018-10-22 16:18:01 to 2018-10-22 16:18:01 <br>
2018-10-22 16:18:05 to 2018-10-22 16:18:05 <br>
2018-10-22 16:18:10 to 2018-10-22 16:18:10 <br>
2018-10-22 16:18:29 to 2018-10-22 16:18:29 <br>
2018-10-22 16:18:38 to 2018-10-22 16:18:38 <br>
2018-10-22 16:18:40 to 2018-10-22 16:18:40 <br>
2018-10-22 16:18:51 to 2018-10-22 16:18:51 <br>
2018-10-22 16:18:55 to 2018-10-22 16:18:55 <br>
2018-10-22 16:19:03 to 2018-10-22 16:19:03 <br>
2018-10-22 16:19:07 to 2018-10-22 16:19:07 <br>
2018-10-22 16:19:24 to 2018-10-22 16:19:24 <br>
2018-10-22 16:19:29 to 2018-10-22 16:19:29 <br>
2018-10-22 16:19:32 to 2018-10-22 16:19:32 <br>
2018-10-22 16:19:34 to 2018-10-22 16:19:34 <br>
2018-10-22 16:19:38 to 2018-10-22 16:19:38 <br>
2018-10-22 16:19:42 to 2018-10-22 16:19:42 <br>
2018-10-22 16:19:49 to 2018-10-22 16:19:49 <br>
2018-10-22 16:19:55 to 2018-10-22 16:19:55 <br>
2018-10-22 16:20:05 to 2018-10-22 16:20:05 <br>
2018-10-22 16:20:07 to 2018-10-22 16:20:07 <br>
2018-10-22 16:20:09 to 2018-10-22 16:20:09 <br>
2018-10-22 16:20:14 to 2018-10-22 16:20:14 <br>
2018-10-22 16:20:16 to 2018-10-22 16:20:16 <br>
2018-10-22 16:20:23 to 2018-10-22 16:20:23 <br>
2018-10-22 16:20:27 to 2018-10-22 16:20:27 <br>
2018-10-22 16:20:40 to 2018-10-22 16:20:40 <br>
2018-10-22 16:20:45 to 2018-10-22 16:20:45 <br>
2018-10-22 16:20:49 to 2018-10-22 16:20:49 <br>
2018-10-22 16:20:51 to 2018-10-22 16:20:51 <br>
2018-10-22 16:21:01 to 2018-10-22 16:21:01 <br>
2018-10-22 16:21:03 to 2018-10-22 16:21:03 <br>
2018-10-22 16:21:13 to 2018-10-22 16:21:13 <br>
2018-10-22 16:21:23 to 2018-10-22 16:21:23 <br>
2018-10-22 16:21:30 to 2018-10-22 16:21:30 <br>
2018-10-22 16:21:36 to 2018-10-22 16:21:36 <br>
2018-10-22 16:21:49 to 2018-10-22 16:21:49 <br>
2018-10-22 16:21:53 to 2018-10-22 16:21:53 <br>
2018-10-22 16:21:58 to 2018-10-22 16:21:58 <br>
2018-10-22 16:22:05 to 2018-10-22 16:22:05 <br>
2018-10-22 16:22:07 to 2018-10-22 16:22:07 <br>
2018-10-22 16:22:10 to 2018-10-22 16:22:10 <br>
2018-10-22 16:22:12 to 2018-10-22 16:22:12 <br>
2018-10-22 16:22:31 to 2018-10-22 16:22:31 <br>
2018-10-22 16:22:41 to 2018-10-22 16:22:41 <br>
2018-10-22 16:23:05 to 2018-10-22 16:23:05 <br>
2018-10-22 16:23:23 to 2018-10-22 16:23:23 <br>
2018-10-22 16:23:25 to 2018-10-22 16:23:25 <br>
2018-10-22 16:23:43 to 2018-10-22 16:23:43 <br>
2018-10-22 16:23:50 to 2018-10-22 16:23:50 <br>
2018-10-22 16:23:53 to 2018-10-22 16:23:53 <br>
2018-10-22 16:24:14 to 2018-10-22 16:24:14 <br>
2018-10-22 16:24:24 to 2018-10-22 16:24:24 <br>
2018-10-22 16:24:32 to 2018-10-22 16:24:32 <br>
2018-10-22 16:24:36 to 2018-10-22 16:24:36 <br>
2018-10-22 16:24:43 to 2018-10-22 16:24:43 <br>
2018-10-22 16:24:52 to 2018-10-22 16:24:52 <br>
2018-10-22 16:25:09 to 2018-10-22 16:25:09 <br>
2018-10-22 16:25:11 to 2018-10-22 16:25:11 <br>
2018-10-22 16:25:17 to 2018-10-22 16:25:17 <br>
2018-10-22 16:25:19 to 2018-10-22 16:25:19 <br>
2018-10-22 16:25:22 to 2018-10-22 16:25:22 <br>
2018-10-22 16:25:32 to 2018-10-22 16:25:32 <br>
2018-10-22 16:25:36 to 2018-10-22 16:25:36 <br>
2018-10-22 16:25:43 to 2018-10-22 16:25:43 <br>
2018-10-22 16:25:52 to 2018-10-22 16:25:52 <br>
2018-10-22 16:25:58 to 2018-10-22 16:25:58 <br>
2018-10-22 16:26:02 to 2018-10-22 16:26:02 <br>
2018-10-22 16:26:06 to 2018-10-22 16:26:06 <br>
2018-10-22 16:26:08 to 2018-10-22 16:26:08 <br>
2018-10-22 16:26:10 to 2018-10-22 16:26:10 <br>
2018-10-22 16:26:12 to 2018-10-22 16:26:12 <br>
2018-10-22 16:26:27 to 2018-10-22 16:26:27 <br>
2018-10-22 16:26:42 to 2018-10-22 16:26:42 <br>
2018-10-22 16:26:44 to 2018-10-22 16:26:44 <br>
2018-10-22 16:26:47 to 2018-10-22 16:26:47 <br>
2018-10-22 16:26:49 to 2018-10-22 16:26:49 <br>
2018-10-22 16:26:56 to 2018-10-22 16:26:56 <br>
2018-10-22 16:27:15 to 2018-10-22 16:27:15 <br>
2018-10-22 16:27:30 to 2018-10-22 16:27:30 <br>
2018-10-22 16:27:52 to 2018-10-22 16:27:52 <br>
2018-10-22 16:29:37 to 2018-10-22 16:29:37 <br>
2018-10-22 16:30:06 to 2018-10-22 16:30:06 <br>
2018-10-22 16:30:25 to 2018-10-22 16:30:25 <br>
2018-10-22 16:30:40 to 2018-10-22 16:30:40 <br>
2018-10-22 16:31:17 to 2018-10-22 16:31:17 <br>
2018-10-22 16:32:10 to 2018-10-22 16:32:10 <br>
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2018-10-22 16:32:20 to 2018-10-22 16:32:20 <br>
2018-10-22 16:32:23 to 2018-10-22 16:32:23 <br>
2018-10-22 16:33:00 to 2018-10-22 16:33:00 <br>
2018-10-22 16:34:11 to 2018-10-22 16:34:11 <br>
2018-10-22 16:34:16 to 2018-10-22 16:34:16 <br>
2018-10-22 16:35:58 to 2018-10-22 16:35:58 <br>
2018-10-22 16:36:04 to 2018-10-22 16:36:04 <br>
2018-10-22 16:36:12 to 2018-10-22 16:36:12 <br>
2018-10-22 16:40:58 to 2018-10-22 16:40:58 <br>
2018-10-22 16:42:24 to 2018-10-22 16:42:24 <u></u><u></u></p>
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<p class="m_1496389381004702725msipfooter6d2e06ff" align="center" style="margin:0in;margin-bottom:.0001pt;text-align:center">
<span style="font-size:10.0pt;color:black">Schlumberger-Private</span><u></u><u></u></p>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><span style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)">Edward A. Sauter</span><br style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)"><span style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)">US Geological Survey</span><br style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)"><span style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)">Box 25046 DFC, MS 966</span><br style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)"><span style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)">Denver, CO 80226-0046 USA</span><br style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)"><span style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)">E-mail: </span><a href="mailto:esauter@usgs.gov" style="color:rgb(17,85,204);font-family:sans-serif;background-color:rgb(255,255,255)" target="_blank">esauter@usgs.gov</a><br style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)"><span style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)">Phone: 303-273-8471</span><br style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)"><span style="color:rgb(80,0,80);font-family:sans-serif;background-color:rgb(255,255,255)">Fax 303-273-8506</span>
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