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Code Issues 13 Packages Projects Releases Wiki Activity

Short/long/closed display for each band calculated from latest data for each ionosonde station

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This commit is contained in:
Ian Renton
2026-05-21 20:54:08 +01:00
parent c38be5b588
commit c939a5c1a1
15 changed files with 151 additions and 58 deletions
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20
core/constants.py
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@@ -62,17 +62,17 @@ MODE_ALIASES = {
BANDS = [ BANDS = [
Band(name="2200m", start_freq=135700, end_freq=137800), Band(name="2200m", start_freq=135700, end_freq=137800),
Band(name="600m", start_freq=472000, end_freq=479000), Band(name="600m", start_freq=472000, end_freq=479000),
Band(name="160m", start_freq=1800000, end_freq=2000000), Band(name="160m", start_freq=1800000, end_freq=2000000, is_ham_hf=True),
Band(name="80m", start_freq=3500000, end_freq=4000000), Band(name="80m", start_freq=3500000, end_freq=4000000, is_ham_hf=True),
Band(name="60m", start_freq=5250000, end_freq=5410000), Band(name="60m", start_freq=5250000, end_freq=5410000, is_ham_hf=True),
Band(name="40m", start_freq=7000000, end_freq=7300000), Band(name="40m", start_freq=7000000, end_freq=7300000, is_ham_hf=True),
Band(name="30m", start_freq=10100000, end_freq=10150000), Band(name="30m", start_freq=10100000, end_freq=10150000, is_ham_hf=True),
Band(name="20m", start_freq=14000000, end_freq=14350000), Band(name="20m", start_freq=14000000, end_freq=14350000, is_ham_hf=True),
Band(name="17m", start_freq=18068000, end_freq=18168000), Band(name="17m", start_freq=18068000, end_freq=18168000, is_ham_hf=True),
Band(name="15m", start_freq=21000000, end_freq=21450000), Band(name="15m", start_freq=21000000, end_freq=21450000, is_ham_hf=True),
Band(name="12m", start_freq=24890000, end_freq=24990000), Band(name="12m", start_freq=24890000, end_freq=24990000, is_ham_hf=True),
Band(name="11m", start_freq=26965000, end_freq=27405000), Band(name="11m", start_freq=26965000, end_freq=27405000),
Band(name="10m", start_freq=28000000, end_freq=29700000), Band(name="10m", start_freq=28000000, end_freq=29700000, is_ham_hf=True),
Band(name="6m", start_freq=50000000, end_freq=54000000), Band(name="6m", start_freq=50000000, end_freq=54000000),
Band(name="5m", start_freq=56000000, end_freq=60500000), Band(name="5m", start_freq=56000000, end_freq=60500000),
Band(name="4m", start_freq=70000000, end_freq=70500000), Band(name="4m", start_freq=70000000, end_freq=70500000),

2
data/band.py
View File

@@ -11,3 +11,5 @@ class Band:
start_freq: float start_freq: float
# Stop frequency, in Hz # Stop frequency, in Hz
end_freq: float end_freq: float
# Whether this is an HF amateur radio band
is_ham_hf: bool = False

8
data/solar_conditions.py
View File

@@ -161,7 +161,8 @@ class SolarConditions:
blackout_forecast_r1r2: dict = None blackout_forecast_r1r2: dict = None
# NOAA Radio Blackout (R3 or greater) probability forecast, keyed by UNIX timestamp of start of day UTC # NOAA Radio Blackout (R3 or greater) probability forecast, keyed by UNIX timestamp of start of day UTC
blackout_forecast_r3_or_greater: dict = None blackout_forecast_r3_or_greater: dict = None
# Ionosonde measurements from LGDC, dict keyed by URSI code, values are dicts with keys: ursi, name, fof2, muf, luf # Ionosonde measurements from LGDC, dict keyed by URSI code, values are dicts with keys: ursi, name, fof2, muf, luf,
# band_states
ionosonde_data: dict = None ionosonde_data: dict = None
# Derived values (populated by infer_descriptions()) # Derived values (populated by infer_descriptions())
@@ -196,6 +197,7 @@ class SolarConditions:
self.electron_flux_desc = _lookup_by_threshold(self.electron_flux, ELECTRON_FLUX_DESCRIPTIONS) self.electron_flux_desc = _lookup_by_threshold(self.electron_flux, ELECTRON_FLUX_DESCRIPTIONS)
def to_json(self): def to_json(self):
"""JSON serialise""" """JSON serialise. Dict key order is insertion order (Python 3.7+ guarantee), so callers receive
fields in a predictable, logical sequence without relying on sort_keys."""
return json.dumps(self, default=lambda o: o.__dict__, sort_keys=True) return json.dumps(self, default=lambda o: o.__dict__)

44
solarconditionsproviders/giroionosonde.py
View File

@@ -6,13 +6,14 @@ from threading import Thread, Event
import pytz import pytz
import requests import requests
from core.constants import HTTP_HEADERS from core.constants import HTTP_HEADERS, BANDS
from solarconditionsproviders.solar_conditions_provider import SolarConditionsProvider from solarconditionsproviders.solar_conditions_provider import SolarConditionsProvider
POLL_INTERVAL = 3600 # 1 hour POLL_INTERVAL = 3600 # 1 hour
STATIONS_INDEX = "datafiles/didbase-stations.csv" STATIONS_INDEX = "datafiles/didbase-stations.csv"
LGDC_URL = "https://lgdc.uml.edu/common/DIDBGetValues" LGDC_URL = "https://lgdc.uml.edu/common/DIDBGetValues"
HISTORY_HOURS = 24 HISTORY_HOURS = 24
HF_BANDS = [b for b in BANDS if b.is_ham_hf]
class GIROIonosonde(SolarConditionsProvider): class GIROIonosonde(SolarConditionsProvider):
@@ -41,7 +42,8 @@ class GIROIonosonde(SolarConditionsProvider):
super().setup(solar_conditions, solar_conditions_cache) super().setup(solar_conditions, solar_conditions_cache)
self.update_data({"ionosonde_data": { self.update_data({"ionosonde_data": {
s["ursi"]: {"ursi": s["ursi"], "name": s["name"], "fof2": None, "muf": None, "luf": None} s["ursi"]: {"ursi": s["ursi"], "name": s["name"], "fof2": None, "muf": None, "luf": None,
"band_states": None}
for s in self._stations for s in self._stations
}}) }})
@@ -75,7 +77,9 @@ class GIROIonosonde(SolarConditionsProvider):
try: try:
fof2, muf, luf = self._fetch_station_data(ursi, from_time, now) fof2, muf, luf = self._fetch_station_data(ursi, from_time, now)
if fof2 and muf: if fof2 and muf:
ionosonde_data[ursi] = {"ursi": ursi, "name": name, "fof2": fof2, "muf": muf, "luf": luf or None} band_states = self._compute_band_statess(fof2, muf, luf or {})
ionosonde_data[ursi] = {"ursi": ursi, "name": name, "fof2": fof2, "muf": muf,
"luf": luf or None, "band_states": band_states}
updated_count += 1 updated_count += 1
except Exception: except Exception:
logging.warning(f"Could not fetch ionosonde data for {ursi} ({name})") logging.warning(f"Could not fetch ionosonde data for {ursi} ({name})")
@@ -101,6 +105,40 @@ class GIROIonosonde(SolarConditionsProvider):
return None, None, None return None, None, None
return self._parse_all(response.text) return self._parse_all(response.text)
@staticmethod
def _latest(d):
"""Return the value with the highest timestamp key, or None if the dict is empty."""
return d[max(d.keys())] if d else None
@staticmethod
def _compute_band_statess(fof2_dict, muf_dict, luf_dict):
"""Compute HF band states from the latest foF2, MUF and LUF values.
States:
Closed if band frequency is below LUF (if known) or above MUF
Short if band frequency is >= LUF and < foF2 (good for NVIS)
Long if band frequency is >= foF2 and < MUF (good for DX)
"""
# We have a list of timestamped data for each value, but for this we only want the latest value
fof2 = GIROIonosonde._latest(fof2_dict)
muf = GIROIonosonde._latest(muf_dict)
luf = GIROIonosonde._latest(luf_dict)
if fof2 is None or muf is None:
return {}
band_states = {}
# Iterate over all ham HF bands, we don't care about the others at this point
for band in HF_BANDS:
freq = band.start_freq / 1000000
if freq > muf or (luf is not None and freq < luf):
band_states[band.name] = "Closed"
elif freq < fof2:
band_states[band.name] = "Short"
else:
band_states[band.name] = "Long"
return band_states
@staticmethod @staticmethod
def _parse_all(text): def _parse_all(text):
"""Parse web server response and return (fof2_dict, muf_dict, luf_dict) keyed by UNIX timestamp.""" """Parse web server response and return (fof2_dict, muf_dict, luf_dict) keyed by UNIX timestamp."""

2
templates/about.html
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@@ -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> <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> </div>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script>$(document).ready(function() { $("#nav-link-about").addClass("active"); }); <!-- highlight active page in nav --></script> <script>$(document).ready(function() { $("#nav-link-about").addClass("active"); }); <!-- highlight active page in nav --></script>
{% end %} {% end %}

4
templates/add_spot.html
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@@ -69,8 +69,8 @@
</div> </div>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script src="/js/add-spot.js?v=1779390551"></script> <script src="/js/add-spot.js?v=1779393248"></script>
<script>$(document).ready(function() { $("#nav-link-add-spot").addClass("active"); }); <!-- highlight active page in nav --></script> <script>$(document).ready(function() { $("#nav-link-add-spot").addClass("active"); }); <!-- highlight active page in nav --></script>
{% end %} {% end %}

4
templates/alerts.html
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@@ -70,8 +70,8 @@
</div> </div>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script src="/js/alerts.js?v=1779390551"></script> <script src="/js/alerts.js?v=1779393248"></script>
<script>$(document).ready(function() { $("#nav-link-alerts").addClass("active"); }); <!-- highlight active page in nav --></script> <script>$(document).ready(function() { $("#nav-link-alerts").addClass("active"); }); <!-- highlight active page in nav --></script>
{% end %} {% end %}

6
templates/bands.html
View File

@@ -76,9 +76,9 @@
<script> <script>
let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %}; let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
</script> </script>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script src="/js/spotsbandsandmap.js?v=1779390551"></script> <script src="/js/spotsbandsandmap.js?v=1779393248"></script>
<script src="/js/bands.js?v=1779390551"></script> <script src="/js/bands.js?v=1779393248"></script>
<script>$(document).ready(function() { $("#nav-link-bands").addClass("active"); }); <!-- highlight active page in nav --></script> <script>$(document).ready(function() { $("#nav-link-bands").addClass("active"); }); <!-- highlight active page in nav --></script>
{% end %} {% end %}

8
templates/base.html
View File

@@ -24,7 +24,7 @@
<title>Spothole</title> <title>Spothole</title>
<link rel="stylesheet" href="/css/style.css?v=1779390551" type="text/css"> <link rel="stylesheet" href="/css/style.css?v=1779393248" type="text/css">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet" <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-sRIl4kxILFvY47J16cr9ZwB07vP4J8+LH7qKQnuqkuIAvNWLzeN8tE5YBujZqJLB" crossorigin="anonymous"> integrity="sha384-sRIl4kxILFvY47J16cr9ZwB07vP4J8+LH7qKQnuqkuIAvNWLzeN8tE5YBujZqJLB" crossorigin="anonymous">
<link href="/fa/css/fontawesome.min.css" rel="stylesheet" /> <link href="/fa/css/fontawesome.min.css" rel="stylesheet" />
@@ -52,9 +52,9 @@
integrity="sha384-L1eE4eD41kpBIWe2I0eHy+GnEUC4RIpcvibVW2JCminuPlTl+2Bc528iPdVMg5Dn" integrity="sha384-L1eE4eD41kpBIWe2I0eHy+GnEUC4RIpcvibVW2JCminuPlTl+2Bc528iPdVMg5Dn"
crossorigin="anonymous"></script> crossorigin="anonymous"></script>
<script src="https://misc.ianrenton.com/jsutils/utils.js?v=1779390551"></script> <script src="https://misc.ianrenton.com/jsutils/utils.js?v=1779393248"></script>
<script src="https://misc.ianrenton.com/jsutils/ui-ham.js?v=1779390551"></script> <script src="https://misc.ianrenton.com/jsutils/ui-ham.js?v=1779393248"></script>
<script src="https://misc.ianrenton.com/jsutils/geo.js?v=1779390551"></script> <script src="https://misc.ianrenton.com/jsutils/geo.js?v=1779393248"></script>
</head> </head>
<body> <body>

30
templates/conditions.html
View File

@@ -185,7 +185,29 @@
style="width: auto;" oninput="ionosondeStationChanged();"> style="width: auto;" oninput="ionosondeStationChanged();">
</select> </select>
</div> </div>
<div id="ionosonde-latest" class="mb-3"></div> <div id="ionosonde-latest" class="mb-3">
<div id="ionosonde-no-data" class="alert alert-warning mt-2 mb-0 py-2" style="display:none;">No data available for this station.</div>
<div id="ionosonde-data-rows" style="display:none;">
<div class="row align-items-center me-0">
<div class="col-12 py-2 text-muted">Latest values as of <span id="ionosonde-latest-time"></span></div>
</div>
<div class="row align-items-center me-0">
<div class="col-12 col-md-4 py-2">LUF: <strong id="ionosonde-latest-luf"></strong></div>
<div class="col-12 col-md-4 py-2">foF2: <strong id="ionosonde-latest-fof2"></strong></div>
<div class="col-12 col-md-4 py-2">MUF (3000 km): <strong id="ionosonde-latest-muf"></strong></div>
</div>
<div id="ionosonde-stale-warning" class="alert alert-warning mt-2 mb-0 py-2" style="display:none;">Data is more than 12 hours old!</div>
</div>
</div>
<div id="ionosonde-band-state" class="mb-3" style="display:none;">
<table class="table table-sm table-bordered mb-0 d-none d-md-table" style="table-layout: fixed;">
<thead><tr id="ionosonde-band-state-head"></tr></thead>
<tbody><tr id="ionosonde-band-state-row"></tr></tbody>
</table>
<table class="table table-sm table-bordered mb-0 d-md-none">
<tbody id="ionosonde-band-state-body"></tbody>
</table>
</div>
<canvas id="ionosonde-chart" class="mt-3 mb-3 hideonmobile"></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 class="form-text mt-2">Data from the <a href="https://lgdc.uml.edu/">Lowell GIRO Data Center</a>.</div>
</div> </div>
@@ -211,7 +233,7 @@
</select> </select>
</div> </div>
<div class="table-responsive"> <div class="table-responsive">
<table class="table table-sm table-bordered mb-0"> <table class="table table-sm table-bordered mb-0" style="table-layout: fixed;">
<thead> <thead>
<tr> <tr>
<th></th> <th></th>
@@ -249,8 +271,8 @@
</div> </div>
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.9/dist/chart.umd.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.9/dist/chart.umd.min.js"></script>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script src="/js/conditions.js?v=1779390551"></script> <script src="/js/conditions.js?v=1779393248"></script>
<script>$(document).ready(function () { <script>$(document).ready(function () {
$("#nav-link-conditions").addClass("active"); $("#nav-link-conditions").addClass("active");
}); <!-- highlight active page in nav --></script> }); <!-- highlight active page in nav --></script>

6
templates/map.html
View File

@@ -94,9 +94,9 @@
<script> <script>
let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %}; let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
</script> </script>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script src="/js/spotsbandsandmap.js?v=1779390551"></script> <script src="/js/spotsbandsandmap.js?v=1779393248"></script>
<script src="/js/map.js?v=1779390551"></script> <script src="/js/map.js?v=1779393248"></script>
<script>$(document).ready(function() { $("#nav-link-map").addClass("active"); }); <!-- highlight active page in nav --></script> <script>$(document).ready(function() { $("#nav-link-map").addClass("active"); }); <!-- highlight active page in nav --></script>
{% end %} {% end %}

6
templates/spots.html
View File

@@ -104,9 +104,9 @@
<script> <script>
let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %}; let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
</script> </script>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script src="/js/spotsbandsandmap.js?v=1779390551"></script> <script src="/js/spotsbandsandmap.js?v=1779393248"></script>
<script src="/js/spots.js?v=1779390551"></script> <script src="/js/spots.js?v=1779393248"></script>
<script>$(document).ready(function() { $("#nav-link-spots").addClass("active"); }); <!-- highlight active page in nav --></script> <script>$(document).ready(function() { $("#nav-link-spots").addClass("active"); }); <!-- highlight active page in nav --></script>
{% end %} {% end %}

4
templates/status.html
View File

@@ -59,8 +59,8 @@
</div> </div>
</div> </div>
<script src="/js/common.js?v=1779390551"></script> <script src="/js/common.js?v=1779393248"></script>
<script src="/js/status.js?v=1779390551"></script> <script src="/js/status.js?v=1779393248"></script>
<script> <script>
$(document).ready(function() { $("#nav-link-status").addClass("active"); }); <!-- highlight active page in nav --> $(document).ready(function() { $("#nav-link-status").addClass("active"); }); <!-- highlight active page in nav -->
</script> </script>

19
webassets/apidocs/openapi.yml
View File

@@ -15,7 +15,7 @@ info:
### 1.4 ### 1.4
* `/solar` response now includes `ionosonde_data`, which contains ionosonde station measurements (foF2 and MUF) sourced from the GIRO Data Center. * `/solar` response now includes `ionosonde_data`, which contains ionosonde station measurements (LUF, foF2 and MUF) sourced from the GIRO Data Center as well as implied band states.
### 1.3 ### 1.3
@@ -1735,6 +1735,23 @@ components:
example: example:
"1747267201.0": 2.10 "1747267201.0": 2.10
"1747267501.0": 2.05 "1747267501.0": 2.05
band_states:
type: object
nullable: true
description: >
States of each HF amateur band, derived from the latest foF2, MUF and LUF values. Keyed by band name. Each
value is one of: "Closed" (band frequency is below LUF or above MUF), "Short" (band frequency is at or above
LUF and below foF2, so good for NVIS) or "Long" (band frequency is at or above foF2 and below MUF, so good
for DX). Null if foF2 or MUF data is not yet available.
additionalProperties:
type: string
enum: [Closed, Short, Long]
example:
"160m": "Closed"
"80m": "Short"
"40m": "Long"
"20m": "Long"
"10m": "Closed"
SolarConditionsProviderStatus: SolarConditionsProviderStatus:
type: object type: object

46
webassets/js/conditions.js
View File

@@ -411,11 +411,15 @@ function renderIonosondeData() {
const lufEntries = toSeries(station.luf); const lufEntries = toSeries(station.luf);
const allTs = [...fof2Entries, ...mufEntries, ...lufEntries].map(e => e.ts); const allTs = [...fof2Entries, ...mufEntries, ...lufEntries].map(e => e.ts);
if (allTs.length === 0) { 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-no-data').show();
$('#ionosonde-data-rows').hide();
$('#ionosonde-band-state').hide();
$('#ionosonde-chart').hide(); $('#ionosonde-chart').hide();
if (ionosondeChart) { ionosondeChart.destroy(); ionosondeChart = null; } if (ionosondeChart) { ionosondeChart.destroy(); ionosondeChart = null; }
return; return;
} }
$('#ionosonde-no-data').hide();
$('#ionosonde-data-rows').show();
// Populate latest values summary (visible on all screen sizes) // Populate latest values summary (visible on all screen sizes)
const latestFof2 = fof2Entries.length ? fof2Entries[fof2Entries.length - 1].val : null; const latestFof2 = fof2Entries.length ? fof2Entries[fof2Entries.length - 1].val : null;
@@ -423,25 +427,33 @@ function renderIonosondeData() {
const latestLuf = lufEntries.length ? lufEntries[lufEntries.length - 1].val : null; const latestLuf = lufEntries.length ? lufEntries[lufEntries.length - 1].val : null;
const minTs = allTs.length ? Math.min(...allTs) : null; const minTs = allTs.length ? Math.min(...allTs) : null;
const maxTs = allTs.length ? Math.max(...allTs) : null; const maxTs = allTs.length ? Math.max(...allTs) : null;
let latestTimeStr = '';
if (maxTs != null) { if (maxTs != null) {
const latestDate = moment.utc(maxTs * 1000); const latestDate = moment.utc(maxTs * 1000);
latestTimeStr = latestDate.format('DD MMM YYYY HH:mm [UTC]') + ' (' + latestDate.fromNow() + ')'; $('#ionosonde-latest-time').text(latestDate.format('DD MMM YYYY HH:mm [UTC]') + ' (' + latestDate.fromNow() + ')');
}
$('#ionosonde-latest-luf').text(latestLuf !== null ? latestLuf.toFixed(2) + ' MHz' : 'N/A');
$('#ionosonde-latest-fof2').text(latestFof2 !== null ? latestFof2.toFixed(2) + ' MHz' : 'N/A');
$('#ionosonde-latest-muf').text(latestMuf !== null ? latestMuf.toFixed(2) + ' MHz' : 'N/A');
$('#ionosonde-stale-warning').toggle(maxTs !== null && (Date.now() / 1000 - maxTs) > 12 * 3600);
// Populate band state tables. There are actually two tables to populate, which is pretty janky, but allows us to
// display horizontally on desktop but flip it around to become a vertical list on mobile.
const bandStateClass = {'Closed': 'bg-danger-subtle', 'Short': 'bg-primary-subtle', 'Long': 'bg-success-subtle'};
const bandStates = station.band_states;
if (bandStates && Object.keys(bandStates).length > 0) {
const headRow = $('#ionosonde-band-state-head').empty();
const dataRow = $('#ionosonde-band-state-row').empty();
const vBody = $('#ionosonde-band-state-body').empty();
Object.entries(bandStates).forEach(([band, state]) => {
const cls = bandStateClass[state] || '';
headRow.append($('<th>').addClass('text-center').text(band));
dataRow.append($('<td>').addClass('text-center ' + cls).text(state));
vBody.append($('<tr>').append($('<td>').addClass('fw-bold').text(band)).append($('<td>').addClass(cls).text(state)));
});
$('#ionosonde-band-state').show();
} else {
$('#ionosonde-band-state').hide();
} }
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 align-items-center me-0">' +
'<div class="col-12 py-2 text-muted">Latest values as of ' + latestTimeStr + '</div></div>' +
'<div class="row border-bottom align-items-center me-0">' +
'<div class="col-12 col-md-4 py-2">LUF: <strong>' + (latestLuf !== null ? latestLuf.toFixed(2) + ' MHz' : 'N/A') + '</strong></div>' +
'<div class="col-12 col-md-4 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>'
);
if (ionosondeChart) { if (ionosondeChart) {
ionosondeChart.destroy(); ionosondeChart.destroy();