<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-7">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
Looks like the weird low frequency ÄF sine-like variations at college have been going since about
<a href="https://geomag.usgs.gov/plots/?stations=CMO&channels=G&timeRangeType=custom&endTime=2019-10-18T07:25:00.000Z&startTime=2019-10-17T13:25:00.000Z&scale=Auto" title="https://geomag.usgs.gov/plots/?stations=CMO&channels=G&timeRangeType=custom&endTime=2019-10-18T07:25:00.000Z&startTime=2019-10-17T13:25:00.000Z&scale=Auto">
mid-late October</a>.</div>
<div id="appendonsend"></div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Geomag-daily <geomag-daily-bounces@geohazards.usgs.gov> on behalf of Cain, Payton D <pcain@usgs.gov><br>
<b>Sent:</b> Wednesday, January 15, 2020 15:10<br>
<b>To:</b> geomag-daily@geohazards.usgs.gov <geomag-daily@geohazards.usgs.gov><br>
<b>Subject:</b> [Geomag-daily] Daily Report, 1-15-2020 (015)</font>
<div> </div>
</div>
<style type="text/css" style="display:none">
<!--
p
{margin-top:0;
margin-bottom:0}
-->
</style>
<div dir="ltr">
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
The following issues were noted earlier today:</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
BOU E-Field: Ok</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
BRW: Spikes in F at 0549, 0600, and 0803</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
CMO: Small, continuous variations in F(<1 nT)</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
TUC: Gap in data from 1820-1825</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
GUA: Disturbance in F from 0017-0044</div>
</div>
</body>
</html>