Show a warning instead of an empty canvas if the ionosonde station has no data, and also show a warning if we have data but it's old.

solarconditionsproviders/giroionosonde.py

@@ -35,6 +35,16 @@ class GIROIonosonde(SolarConditionsProvider):
                     stations.append({"ursi": row[0].strip(), "name": row[1].strip()})
         return stations
 
+    def setup(self, solar_conditions, solar_conditions_cache):
+        """Prepopulate the ionosonde_data map with known URSI and station names, so that the API exposes this structure
+        even before we actually have any data in it."""
+
+        super().setup(solar_conditions, solar_conditions_cache)
+        self.update_data({"ionosonde_data": {
+            s["ursi"]: {"ursi": s["ursi"], "name": s["name"], "fof2": None, "muf": None}
+            for s in self._stations
+        }})
+
     def start(self):
         logging.info(f"Set up query of GIRO ionosonde data API every {POLL_INTERVAL} seconds.")
         self._thread = Thread(target=self._run, daemon=True)

templates/about.html

@@ -69,7 +69,7 @@
     <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>
 </div>
 
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
 <script>$(document).ready(function() { $("#nav-link-about").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}

templates/add_spot.html

@@ -69,8 +69,8 @@
 
 </div>
 
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
-<script src="/js/add-spot.js?v=1778925881"></script>
+<script src="/js/add-spot.js?v=1778927183"></script>
 <script>$(document).ready(function() { $("#nav-link-add-spot").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}

templates/alerts.html

@@ -70,8 +70,8 @@
 
 </div>
 
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
-<script src="/js/alerts.js?v=1778925881"></script>
+<script src="/js/alerts.js?v=1778927183"></script>
 <script>$(document).ready(function() { $("#nav-link-alerts").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}

templates/bands.html

@@ -76,9 +76,9 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
-<script src="/js/spotsbandsandmap.js?v=1778925881"></script>
+<script src="/js/spotsbandsandmap.js?v=1778927183"></script>
-<script src="/js/bands.js?v=1778925881"></script>
+<script src="/js/bands.js?v=1778927183"></script>
 <script>$(document).ready(function() { $("#nav-link-bands").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}

templates/base.html

@@ -24,7 +24,7 @@
 
     <title>Spothole</title>
 
-    <link rel="stylesheet" href="/css/style.css?v=1778925881" type="text/css">
+    <link rel="stylesheet" href="/css/style.css?v=1778927183" type="text/css">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet"
           integrity="sha384-sRIl4kxILFvY47J16cr9ZwB07vP4J8+LH7qKQnuqkuIAvNWLzeN8tE5YBujZqJLB" crossorigin="anonymous">
     <link href="/fa/css/fontawesome.min.css" rel="stylesheet" />
@@ -52,9 +52,9 @@
             integrity="sha384-L1eE4eD41kpBIWe2I0eHy+GnEUC4RIpcvibVW2JCminuPlTl+2Bc528iPdVMg5Dn"
             crossorigin="anonymous"></script>
 
-    <script src="https://misc.ianrenton.com/jsutils/utils.js?v=1778925881"></script>
+    <script src="https://misc.ianrenton.com/jsutils/utils.js?v=1778927183"></script>
-    <script src="https://misc.ianrenton.com/jsutils/ui-ham.js?v=1778925881"></script>
+    <script src="https://misc.ianrenton.com/jsutils/ui-ham.js?v=1778927183"></script>
-    <script src="https://misc.ianrenton.com/jsutils/geo.js?v=1778925881"></script>
+    <script src="https://misc.ianrenton.com/jsutils/geo.js?v=1778927183"></script>
 
 </head>
 <body>

templates/conditions.html

@@ -176,7 +176,7 @@
 {% if has_giro_ionosonde %}
 <div class="card mt-5">
     <div class="card-header">
-        Critical & Maximum Usable Frequencies
+        Ionosonde Data
     </div>
     <div class="card-body">
         <div class="mb-3">
@@ -186,7 +186,7 @@
             </select>
         </div>
         <div id="ionosonde-latest" class="mb-3"></div>
-        <canvas id="ionosonde-chart" class="mt-3 mb-3 d-none d-md-block"></canvas>
+        <canvas id="ionosonde-chart" class="mt-3 mb-3 hideonmobile"></canvas>
         <div class="form-text mt-2">Data from the <a href="https://lgdc.uml.edu/">Lowell GIRO Data Center</a>.</div>
     </div>
 </div>
@@ -249,8 +249,8 @@
 </div>
 
 <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.9/dist/chart.umd.min.js"></script>
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
-<script src="/js/conditions.js?v=1778925881"></script>
+<script src="/js/conditions.js?v=1778927183"></script>
 <script>$(document).ready(function () {
     $("#nav-link-conditions").addClass("active");
 }); <!-- highlight active page in nav --></script>

templates/map.html

@@ -94,9 +94,9 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
-<script src="/js/spotsbandsandmap.js?v=1778925881"></script>
+<script src="/js/spotsbandsandmap.js?v=1778927183"></script>
-<script src="/js/map.js?v=1778925881"></script>
+<script src="/js/map.js?v=1778927183"></script>
 <script>$(document).ready(function() { $("#nav-link-map").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}

templates/spots.html

@@ -104,9 +104,9 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
-<script src="/js/spotsbandsandmap.js?v=1778925881"></script>
+<script src="/js/spotsbandsandmap.js?v=1778927183"></script>
-<script src="/js/spots.js?v=1778925881"></script>
+<script src="/js/spots.js?v=1778927183"></script>
 <script>$(document).ready(function() { $("#nav-link-spots").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}

templates/status.html

@@ -59,8 +59,8 @@
     </div>
 </div>
 
-<script src="/js/common.js?v=1778925881"></script>
+<script src="/js/common.js?v=1778927183"></script>
-<script src="/js/status.js?v=1778925881"></script>
+<script src="/js/status.js?v=1778927183"></script>
 <script>
     $(document).ready(function() { $("#nav-link-status").addClass("active"); }); <!-- highlight active page in nav -->
 </script>

webassets/apidocs/openapi.yml

@@ -1691,9 +1691,8 @@ components:
           type: object
           nullable: true
           description: >
-            Ionosonde measurements from the GIRO Data Center, keyed by URSI station code. Only
+            Ionosonde measurements from the GIRO Data Center, keyed by URSI station code. All known stations are
-            stations for which data was successfully retrieved are included. Null if the
+            included, but not all of them may contain data.
-            GIROIonosonde provider has not yet completed its first poll or if this data source is disabled.
           additionalProperties:
             $ref: '#/components/schemas/IonosondeStation'
 
@@ -1712,7 +1711,7 @@ components:
         fof2:
           type: object
           nullable: true
-          description: F2 layer critical frequency (foF2) measurements in MHz, keyed by UNIX timestamp (UTC seconds since epoch) of each measurement.
+          description: F2 layer critical frequency (foF2) measurements in MHz, keyed by UNIX timestamp (UTC seconds since epoch) of each measurement. Can be null if there is no data.
           additionalProperties:
             type: number
           example:
@@ -1721,7 +1720,7 @@ components:
         muf:
           type: object
           nullable: true
-          description: Maximum Usable Frequency (MUF) for a 3000 km path in MHz, keyed by UNIX timestamp (UTC seconds since epoch) of each measurement.
+          description: Maximum Usable Frequency (MUF) for a 3000 km path in MHz, keyed by UNIX timestamp (UTC seconds since epoch) of each measurement. Can be null if there is no data.
           additionalProperties:
             type: number
           example:

webassets/js/conditions.js

@@ -380,7 +380,9 @@ function populateIonosondeDropdown(data) {
 // Render the foF2/MUF data and line chart for the currently selected station
 function renderIonosondeData() {
     // First make sure that we have some data, that a station entry is selected in the drop-down box, and that the
-    // data contains an entry for that station. If not, bail out at this point.
+    // data contains an entry for that station. If not, this represents an odd state (over and above just "no data for
+    // this station", so bail out at this point. The user will have to reselect something from the list, or wait until
+    // the API is behaving itself again.
     if (!ionosondeData) return;
     const ursi = $('#ionosonde-station').val();
     if (!ursi) return;
@@ -406,7 +408,12 @@ function renderIonosondeData() {
     const fof2Entries = toSeries(station.fof2);
     const mufEntries = toSeries(station.muf);
     const allTs = [...fof2Entries, ...mufEntries].map(e => e.ts);
-    if (allTs.length === 0) return;
+    if (allTs.length === 0) {
+        $('#ionosonde-latest').html('<div class="alert alert-warning mt-2 mb-0 py-2">No data available for this station.</div>');
+        $('#ionosonde-chart').hide();
+        if (ionosondeChart) { ionosondeChart.destroy(); ionosondeChart = null; }
+        return;
+    }
 
     // Populate latest values summary (visible on all screen sizes)
     const latestFof2 = fof2Entries.length ? fof2Entries[fof2Entries.length - 1].val : null;
@@ -418,12 +425,16 @@ function renderIonosondeData() {
         const latestDate = moment.utc(maxTs * 1000);
         latestTimeStr = latestDate.format('DD MMM YYYY HH:mm [UTC]') + ' (' + latestDate.fromNow() + ')';
     }
+    const staleWarning = (maxTs !== null && (Date.now() / 1000 - maxTs) > 12 * 3600)
+        ? '<div class="alert alert-warning mt-2 mb-0 py-2">Data is more than 12 hours old!</div>'
+        : '';
     $('#ionosonde-latest').html(
         '<div class="row border-bottom align-items-center me-0">' +
         '<div class="col-12 col-md-6 py-2 text-muted">Latest values as of ' + latestTimeStr + '</div>' +
         '<div class="col-12 col-md-2 py-2">foF2: <strong>' + (latestFof2 !== null ? latestFof2.toFixed(2) + ' MHz' : 'N/A') + '</strong></div>' +
         '<div class="col-12 col-md-4 py-2">MUF (3000 km): <strong>' + (latestMuf !== null ? latestMuf.toFixed(2) + ' MHz' : 'N/A') + '</strong></div>' +
         '</div>' +
+        staleWarning +
         '</div>'
     );
 
@@ -564,6 +575,9 @@ function renderIonosondeData() {
         },
         plugins: [bandLinesPlugin],
     });
+
+    // Chart canvas is normally hidden until we get here with some definitely good data. Now we have that so show it
+    $('#ionosonde-chart').show();
 }
 
 // Called when the ionosonde station select changes