<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-30 -120 07:25:00.000"
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" >
2026.04.30 (120) 07:25:00</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="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612004300725001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.778" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.223" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.925" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.925" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="232.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="232.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.325" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="257.791" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.925" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.925" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="240.549" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="221.694" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.829" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.979" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.939" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.612" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="24.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.150" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.5
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
232.500 232.500 235.000 235.000 237.500 237.500 240.000 240.000 242.500 245.000 246.104 247.365 248.816 250.507 252.500 254.885 257.791 261.409 266.037 272.167 280.670 293.256 313.798 353.322
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 84 87 84 87 96 99 99 96 87 87 96 93 90 93 93 93 93 90 90 93 81 69
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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="374">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 138.58333 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 167.16667 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 195.75 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 240.549 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0
</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 0.3538872 0.3533988 0.35268724 0.35168076 0.35038465 0.34873247 0.34680796 0.3446216 0.34204412 0.33923516 0.3360058 0.33251932 0.32860458 0.3243659 0.31978112 0.314722 0.3093164 0.3034716 0.29713094 0.29034886 0.28298154 0.27503994 0.26650268 0.25724816 0.24721296 0.23637795 0.22454801 0.21165071 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 0.2 0.2 0.2044898 0.20987755 0.2152653 0.22065306 0.22604081 0.23142858 0.23681633 0.24220408 0.24759184 0.2529796 0.25836736 0.2637551 0.26914287 0.27453062 0.27991837 0.28530613 0.29069388 0.29608163 0.3014694 0.30685714 0.3122449 0.31763265 0.3230204 0.32840815 0.3337959 0.3391837 0.34457144 0.3499592 0.354 0.3609726 0.3926809 0.43116918 0.47659102 0.5280184 0.5838655 0.6427346 0.7037506 0.7665783 0.83122677 0.89789927 0.9669064 1.0386444 1.1135337 1.1920799 1.2747673 1.3621658 1.4548087 1.5531737 1.6576802 1.7684678 1.8853546 2.0075815 2.1337183 2.2615778 2.3886023 2.5120778 2.6297193 2.7398455 2.8415227 2.9343822 3.0185137 3.094231 3.1619787 3.2222733 3.275576 3.3223538 3.363014 3.3978875 3.427292 3.451469 3.4706218 3.4849057 3.494441 3.4993029 3.5 3.4996765 3.4966998 3.490723 3.4818864 3.470332 3.4562008 3.439634 3.4207706 3.3997483 3.3767025 3.3517654 3.3250663 3.296731 3.2668822 3.235638 3.2031126 3.1694164 3.1346555 3.0989316 3.0623417 3.0249794 2.9869332 2.9482877 2.9091232 2.869516 2.829538 2.789258 2.7487397 2.7080443 2.6672287 2.6263463 2.5854475 2.544579 2.503785 2.4631057 2.4225798 2.382242 2.3421252 2.3022594 2.2626727 2.22339 2.1844351 2.1458294 2.107592 2.069741 2.032292 1.9952592 1.9586555 1.9224921 1.8867792 1.8515253 1.8167381 1.782424 1.7485881 1.7152351 1.6823683 1.6499904 1.6181034 1.5867082 1.5558053 1.5253946 1.4954752 1.4660457 1.4371046 1.4086492 1.3806771 1.3531852 1.32617 1.2996275 1.2735541 1.2479452 1.2227963 1.1981026 1.1738591 1.1500608 1.1267022 1.103778 1.0812826 1.0592104 1.0375557 1.0163126 0.99547523 0.97503775 0.95499414 0.93533844 0.9160647 0.8971669 0.878639 0.86047506 0.84266907 0.8252151 0.8081072 0.79133946 0.7749061 0.7588012 0.7430191 0.727554 0.71240026 0.69755226 0.68300444 0.66875136 0.65478754 0.6411077 0.6277064 0.61457855 0.6017189 0.5891224 0.5767841 0.56469893 0.55286217 0.5412688 0.5299144 0.518794 0.5079033 0.49723756 0.48679253 0.47656378 0.466547 0.45673802 0.4471327 0.43772697 0.42851683 0.41949835 0.41066766 0.402021 0.39355463 0.38526493 0.37714827 0.36920118 0.36142018 0.3538019 0.34634298 0.33904022 0.33189037 0.32489035 0.318037 0.31132737 0.3047585 0.29832742 0.29203135 0.28586748 0.2798331 0.2739255 0.26814207 0.26248023 0.25693744 0.25151125 0.2461992 0.24099895 0.23590818 0.23092458 0.22604594 0.22127004 0.21659477 0.212018 0.20753768 0.2031518 0.1988584 0.1946555 0.19054124 0.18651375 0.18257122 0.17871186 0.17493393 0.17123571 0.16761555 0.1640718 0.16060285 0.15720713 0.1538831 0.15062927 0.14744414 0.14432627 0.14127426 0.13828671 0.13536227 0.13249959 0.12969741 0.12695442 0.124269396 0.12164111 0.119068354 0.11654997 0.11408481 0.11167175 0.109309696 0.106997564 0.10473431 0.102518894 0.10035031 0.098227575 0.09614972 0.094115786 0.092124864 0.09017603 0.08826841 0.08640112 0.08457331 0.08278416 0.08103284 0.07931856 0.077640526 0.075997986 0.07439017 0.07281637 0.07127585 0.06976792 0.06829188 0.066847056 0.06543279 0.06404844 0.06269337 0.061366964 0.060068615 0.05879773 0.057553727 0.056336038 0.05514411 0.053977393 0.052835356 0.05171748 0.05062325

</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="3.5" PeakHeight="240.549" Num="5" zHalfNm="221.694" Error="1.755">
-47.429 4.975 -3.608 2.067 -0.804
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6508.583" A="-1.85709953E11" B="5.7317888E7" C="-4422.5513" Error="0.00149"/>
<QuasiParabolic ID="2" StartDistance="6508.583" EndDistance="6537.167" A="0.0" B="185.11427" C="0.011578594" Error="0.00261"/>
<QuasiParabolic ID="3" StartDistance="6537.167" EndDistance="6565.0" A="5.2209603E10" B="-1.6066624E7" C="1236.0562" Error="0.00261"/>
<QuasiParabolic ID="4" StartDistance="6565.0" EndDistance="6566.0" A="1.06882589E13" B="-3.25629491E9" C="248016.58" Error="2.38E-10"/>
<QuasiParabolic ID="5" StartDistance="6566.0" EndDistance="6572.0" A="9.7497236E12" B="-2.97041741E9" C="226247.06" Error="0.0135"/>
<QuasiParabolic ID="6" StartDistance="6572.0" EndDistance="6578.0" A="1.04373231E13" B="-3.17966874E9" C="242166.97" Error="0.0084"/>
<QuasiParabolic ID="7" StartDistance="6578.0" EndDistance="6581.0" A="2.10676807E13" B="-6.4117632E9" C="487841.5" Error="0.00435"/>
<QuasiParabolic ID="8" StartDistance="6581.0" EndDistance="6592.0" A="3.6871187E13" B="-1.12145295E10" C="852737.94" Error="0.0123"/>
<QuasiParabolic ID="9" StartDistance="6592.0" EndDistance="6610.549" A="-3.27534038E13" B="9.9094354E9" C="-749504.56" Error="0.0046"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="85.75" Depth="0.154"/>
<TopsideChapman PeakHeight="240.549" PeakDensity="151985.11" PeakScaleHeight="14.612" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
