<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 22:35:00.000"
URSICode="SMK29"
StationName="Santa Maria"
GeoLatitude="-29.69"
GeoLongitude="307.81"
Source="Ionosonde"
SourceType="DPS-4D"
ScalerType="auto">
<SystemInfo UMLStationID="129">
<FrequencyStepping StartFrequency="2.0" StopFrequency="15.0">
<LinearStepping Step="0.025" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="2.5" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.01 (121) 22:35:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612105012235001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.475" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.845" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.360" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.675" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="227.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="227.500" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="271.219" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="231.224" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.795" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.766" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="22.119" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.750" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.618" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="22.000" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.8 2.825 2.85 2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
227.500 227.500 228.929 230.357 231.786 233.214 234.643 236.071 237.500 238.929 240.357 241.786 243.214 244.643 246.071 247.500 247.500 250.000 252.500 255.000 256.250 257.974 259.925 262.152 264.716 267.700 271.219 275.428
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 0 0 0 0 0 0 0 0 0 0 0 0 0 90 90 105 102 87 0 96 96 102 102 96 96 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.5625 -1.5625 -1.5625 -7.8125 -1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="319">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 137.41667 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 164.83333 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 192.25 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 231.224 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21213934 0.23390245 0.2526677 0.26895854 0.28319094 0.29565945 0.30659118 0.31614733 0.32445762 0.331616 0.33769703 0.34275886 0.34684667 0.3499937 0.352225 0.3535571 0.354 0.353812 0.35339895 0.35261247 0.35145745 0.35001534 0.348294 0.34623033 0.34376696 0.34099412 0.3378617 0.33439493 0.33055604 0.32631677 0.32166007 0.316581 0.31108782 0.3051483 0.29865354 0.2916688 0.28410435 0.27593207 0.26707086 0.25740978 0.24700987 0.23557876 0.22317484 0.20959583 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.20093617 0.20655319 0.21217021 0.21778724 0.22340426 0.22902128 0.2346383 0.24025533 0.24587233 0.25148937 0.2571064 0.26272342 0.26834044 0.27395746 0.27957445 0.28519148 0.2908085 0.29642552 0.30204254 0.30765957 0.3132766 0.3188936 0.32451063 0.33012766 0.33574468 0.3413617 0.34697872 0.35259575 0.354 0.38857406 0.43669352 0.48772526 0.5421846 0.6005066 0.66307473 0.7302021 0.80212444 0.87904465 0.9610793 1.0482318 1.1403984 1.2374182 1.3389759 1.4446754 1.5540359 1.666475 1.7813568 1.8979602 2.0155597 2.1333642 2.2506263 2.3665323 2.480295 2.5911398 2.6983182 2.801092 2.89876 2.990644 3.07611 3.154554 3.225424 3.2882216 3.3424973 3.3878753 3.424014 3.4506586 3.4676101 3.4747524 3.475 3.4735072 3.467325 3.4566038 3.441623 3.4226613 3.3999963 3.3739002 3.3446407 3.3124783 3.277665 3.2404442 3.2010505 3.1597075 3.1166291 3.0720184 3.0260673 2.9789577 2.9308608 2.8819368 2.8323362 2.782199 2.731656 2.6808288 2.629829 2.5787604 2.5277185 2.476791 2.4260578 2.375592 2.32546 2.2757223 2.2264326 2.1776402 2.1293883 2.081716 2.0346575 1.9882427 1.942498 1.8974457 1.8531053 1.8094927 1.7666215 1.7245022 1.683143 1.6425502 1.6027279 1.563678 1.5254014 1.4878968 1.4511621 1.4151936 1.3799864 1.345535 1.3118327 1.2788719 1.2466445 1.2151418 1.1843543 1.1542722 1.1248852 1.0961827 1.0681539 1.0407873 1.0140718 0.98799586 0.96254766 0.9377155 0.91348755 0.889852 0.866797 0.84431064 0.8223812 0.80099696 0.78014624 0.7598175 0.7399993 0.72068036 0.7018494 0.6834954 0.6656075 0.6481749 0.631187 0.6146334 0.5985039 0.5827883 0.5674768 0.5525597 0.53802735 0.5238705 0.5100799 0.4966466 0.48356178 0.4708168 0.45840323 0.4463128 0.43453738 0.42306912 0.41190025 0.40102324 0.39043066 0.3801153 0.37007013 0.3602882 0.35076284 0.34148747 0.33245564 0.3236611 0.31509775 0.30675963 0.29864088 0.29073587 0.28303906 0.27554503 0.26824853 0.2611444 0.25422764 0.24749337 0.24093685 0.23455341 0.22833855 0.22228785 0.216397 0.21066184 0.20507827 0.19964233 0.19435012 0.1891979 0.18418197 0.17929876 0.17454475 0.16991657 0.1654109 0.16102453 0.15675427 0.1525971 0.14855003 0.14461015 0.14077464 0.13704073 0.13340576 0.12986709 0.1264222 0.1230686 0.11980388 0.1166257 0.11353175 0.11051983 0.10758775 0.10473341 0.101954736 0.09924974 0.09661648 0.09405303 0.09155757 0.089128286 0.08676343 0.08446128 0.0822202 0.080038555 0.07791478 0.075847335 0.07383473 0.07187552 0.069968276 0.06811163 0.06630423 0.06454478 0.06283201 0.06116468 0.059541587 0.057961553 0.05642344 0.054926135 0.05346856 0.052049655 0.050668396

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="3.475" PeakHeight="231.224" Num="5" zHalfNm="215.795" Error="0.539">
-39.3 0.478 -0.282 0.084 0.046
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0205" EndDistance="6480.001" A="-5.5027394E11" B="1.69837632E8" C="-13104.63" Error="0.0016"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6507.417" A="-2.01785164E11" B="6.2279372E7" C="-4805.382" Error="0.00146"/>
<QuasiParabolic ID="2" StartDistance="6507.417" EndDistance="6534.833" A="0.0" B="549.9992" C="-0.044505324" Error="0.00853"/>
<QuasiParabolic ID="3" StartDistance="6534.833" EndDistance="6537.0" A="-1.24785171E12" B="3.81705792E8" C="-29189.984" Error="0.0371"/>
<QuasiParabolic ID="4" StartDistance="6537.0" EndDistance="6560.0" A="1.02293627E11" B="-3.1372154E7" C="2405.3928" Error="0.0372"/>
<QuasiParabolic ID="5" StartDistance="6560.0" EndDistance="6561.0" A="-2.57385824E12" B="7.8452781E8" C="-59782.105" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6561.0" EndDistance="6563.0" A="1.37966366E13" B="-4.20571597E9" C="320513.88" Error="0.0328"/>
<QuasiParabolic ID="7" StartDistance="6563.0" EndDistance="6569.0" A="9.7467897E12" B="-2.97157094E9" C="226490.95" Error="0.0102"/>
<QuasiParabolic ID="8" StartDistance="6569.0" EndDistance="6580.0" A="2.56218875E13" B="-7.8049085E9" C="594380.9" Error="0.037"/>
<QuasiParabolic ID="9" StartDistance="6580.0" EndDistance="6591.0" A="2.02347549E13" B="-6.1674824E9" C="469956.38" Error="0.0303"/>
<QuasiParabolic ID="10" StartDistance="6591.0" EndDistance="6601.224" A="-5.8227748E13" B="1.76415007E10" C="-1336217.4" Error="0.00935"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="82.25" Depth="0.154"/>
<TopsideChapman PeakHeight="231.224" PeakDensity="149821.66" PeakScaleHeight="11.618" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
