Support fetching ionosonde data for FoF2 and MUF display on the Conditions page

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     <h4 class="mt-4">What data sources are supported?</h4>
     <p>Spothole can retrieve spots from: <a href="https://www.dxcluster.info/telnet/">Telnet-based DX clusters</a>, the <a href="https://www.reversebeacon.net/">Reverse Beacon Network (RBN)</a>, the <a href="https://www.aprs-is.net/">APRS Internet Service (APRS-IS)</a>, <a href="https://pota.app">POTA</a>, <a href="https://www.sota.org.uk/">SOTA</a>, <a href="https://wwff.co/">WWFF</a>, <a href="https://www.cqgma.org/">GMA</a>, <a href="https://wwbota.net/">WWBOTA</a>, <a href="http://www.hema.org.uk/">HEMA</a>, <a href="https://www.parksnpeaks.org/">Parks 'n' Peaks</a>, <a href="https://ontheair.nz">ZLOTA</a>, <a href="https://www.wota.org.uk/">WOTA</a>, <a href="https://llota.app">LLOTA</a>, <a href="https://wwtota.com">WWTOTA</a>, <a href="https://tilesontheair.com/">Tiles on the Air</a>, the <a href="https://ukpacketradio.network/">UK Packet Repeater Network</a>, and any site based on the <a href="https://github.com/nischu/xOTA">xOTA software by nischu</a>.</p>
     <p>Spothole can retrieve alerts from: <a href="https://www.ng3k.com/">NG3K</a>, <a href="https://pota.app">POTA</a>, <a href="https://www.sota.org.uk/">SOTA</a>, <a href="https://wwff.co/">WWFF</a>, <a href="https://www.parksnpeaks.org/">Parks 'n' Peaks</a>, <a href="https://www.wota.org.uk/">WOTA</a> and <a href="https://www.beachesontheair.com/">BOTA</a>.</p>
-    <p>Spothole can retrieve solar and propagation condition data from <a href="https://www.hamqsl.com">HamQSL</a>.</p>
+    <p>Spothole can retrieve solar and propagation condition data from <a href="https://www.hamqsl.com">HamQSL</a>, the <a href="https://www.swpc.noaa.gov/">NOAA Space Weather Prediction Center</a> and the <a href="https://giro.uml.edu/">Lowell GIRO Data Center</a>.</p>
     <p>Spothole can also perform lookups for callsign data on behalf of the user from <a href="https://qrz.com">QRZ.com</a> and <a href="https://hamqth.com">HamQTH</a>.</p>
     <p>Note that the server owner has not necessarily enabled all these data sources. In particular it is common to disable RBN, to avoid the server being swamped with FT8 traffic, and to disable APRS-IS and UK Packet Net so that the server only displays stations where there is likely to be an operator physically present for a QSO.</p>
     <p>Between the various data sources, the following Special Interest Groups (SIGs) are supported: Parks on the Air (POTA), Summits on the Air (SOTA), Worldwide Flora & Fauna (WWFF), Global Mountain Activity (GMA), Worldwide Bunkers on the Air (WWBOTA), HuMPs Excluding Marilyns Award (HEMA), Islands on the Air (IOTA), Mills on the Air (MOTA), the Amateur Radio Lighthouse Socirty (ARLHS), International Lighthouse Lightship Weekend (ILLW), Silos on the Air (SIOTA), World Castles Award (WCA), New Zealand on the Air (ZLOTA), Keith Roget Memorial National Parks Award (KRMNPA), Wainwrights on the Air (WOTA), Beaches on the Air (BOTA), Lagos y Lagunas On the Air (LLOTA), Towers on the Air (WWTOTA), Tiles on the Air, Worked All Britain (WAB), Worked All Ireland (WAI), and Toilets on the Air (TOTA).</p>
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     <p>This software is dedicated to the memory of Tom G1PJB, SK, a friend and colleague who sadly passed away around the time I started writing it in Autumn 2025. I was looking forward to showing it to you when it was done.</p>
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