<div dir="ltr"><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%">DED
– spike on ΔF at 21:50 UT</span></p>

<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%">CMO
– T-Electric and ΔF have corresponding errors of unknown origin.</span></p>

<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%">SIT
– All temperatures have erroneous readings.</span></p>

<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span class="gmail-observatory"><span style="font-size:12pt;line-height:107%;color:rgb(51,51,51)">FRD</span><span style="box-sizing:border-box"> – Disturbance on </span></span><span class="gmail-channel"><span style="font-size:12pt;line-height:107%;color:rgb(51,51,51)">ΔF</span> and F from 21:50
through 23:26 UT on 08/20/2019</span></p>

<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span class="gmail-channel"><span style="font-size:12pt;line-height:107%;color:rgb(51,51,51)">TUC – Data gaps on Dist from 12:12 – 13:26 UT and 15:09 – 16:41
UT on 08/20/2019</span></span></p>

<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%">SJG
– Spike on </span><span class="gmail-channel"><span style="font-size:12pt;line-height:107%;color:rgb(51,51,51)">ΔF</span></span><span style="font-size:12pt;line-height:107%"> at 07:10 UT on </span><span class="gmail-channel"><span style="font-size:12pt;line-height:107%;color:rgb(51,51,51)">08/20/2019.</span></span><span style="font-size:12pt;line-height:107%"> </span><span class="gmail-observatory"><span style="font-size:12pt;line-height:107%;color:rgb(51,51,51)">Disturbance on </span></span><span class="gmail-channel"><span style="font-size:12pt;line-height:107%;color:rgb(51,51,51)">ΔF</span> and F from 18:07
through 18:40 UT and 21:34 through 21:40 on 08/20/2019 </span></p><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><font face="Arial, sans-serif" style="color:rgb(136,136,136);font-size:12.8px">John M. Spritzer</font><br style="color:rgb(136,136,136);font-size:12.8px;font-family:Arial,sans-serif"><font color="#888888" face="Arial, sans-serif">Geophysicist/Engineer</font><br><div style="color:rgb(136,136,136);font-size:12.8px"><span style="font-family:Arial,sans-serif">USGS/Geologic Hazards Science Center</span></div><div style="color:rgb(136,136,136);font-size:12.8px"><span style="font-family:Arial,sans-serif">PO Box 25046, <a href="https://maps.google.com/?q=MS+966+Denver,+CO+80225+Office&entry=gmail&source=g" style="color:rgb(17,85,204)" target="_blank">MS 966</a></span><br style="font-family:Arial,sans-serif"><span style="font-family:Arial,sans-serif"><a href="https://maps.google.com/?q=MS+966+Denver,+CO+80225+Office&entry=gmail&source=g" style="color:rgb(17,85,204)" target="_blank">Denver, CO 80225</a></span><br style="font-family:Arial,sans-serif"><font face="Arial, sans-serif">Cell: 303-908-0324</font></div><div style="color:rgb(136,136,136);font-size:12.8px"><span style="font-family:Arial,sans-serif">Fax:  303-273-8506</span><br style="font-family:Arial,sans-serif"><br></div></div></div></div></div></div></div>