<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-17 -137 00:05:00.000"
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: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.17 (137) 00:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202613705170005001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.325" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.649" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.132" 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="3.675" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="3.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="265.000" 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="253.067" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.008" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.896" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="28.662" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.908" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.710" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="24.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.730" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 250.000 250.000 252.500 255.000 257.500 262.500 265.000 270.000 275.000 280.000 282.500 286.867 293.372 304.100 325.131 385.030
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 78 81 81 90 87 105 105 102 99 99 99 102 99 96 90 81
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="400">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 142.66667 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 175.33333 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 253.067 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0
</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 0.35354906 0.35298675 0.35220242 0.35119912 0.34998095 0.3485529 0.34684834 0.3448765 0.3427189 0.34031472 0.33767694 0.33475268 0.3315615 0.3281247 0.32440233 0.3203629 0.31604326 0.3114253 0.3064471 0.3011715 0.2954905 0.2894757 0.282966 0.27603868 0.26865014 0.2607728 0.25231564 0.24324727 0.23349129 0.22299255 0.211631 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 0.2 0.2 0.2 0.2 0.20314285 0.20785715 0.21257143 0.21728571 0.222 0.22671428 0.23142858 0.23614286 0.24085714 0.24557143 0.2502857 0.255 0.25971428 0.2644286 0.26914287 0.27385715 0.27857143 0.2832857 0.288 0.2927143 0.29742858 0.30214286 0.30685714 0.31157142 0.3162857 0.321 0.3257143 0.33042857 0.33514285 0.33985713 0.34457144 0.34928572 0.354 0.38103032 0.41485614 0.45662484 0.50603884 0.5611182 0.6194863 0.6795735 0.74074817 0.803022 0.8666622 0.9320912 0.9998226 1.0704088 1.1445115 1.2227995 1.3060715 1.395179 1.4910282 1.5944997 1.7062471 1.8263643 1.9539185 2.0864742 2.2200859 2.3501074 2.4725046 2.584816 2.686081 2.7764747 2.856758 2.927849 2.99074 3.0462835 3.095251 3.138287 3.175928 3.2086332 3.236766 3.2606394 3.2804928 3.2965257 3.3088946 3.317713 3.3230627 3.3249924 3.325 3.323869 3.3202112 3.3141277 3.3057263 3.295115 3.2824023 3.2676954 3.251101 3.2327242 3.2126684 3.1910355 3.167925 3.1434338 3.1176565 3.090685 3.0626082 3.0335126 3.0034811 2.9725943 2.9409285 2.9085584 2.8755548 2.8419855 2.8079157 2.7734067 2.7385182 2.7033057 2.6678228 2.6321201 2.5962448 2.5602427 2.524156 2.4880252 2.451888 2.41578 2.3797345 2.3437824 2.3079534 2.2722743 2.2367706 2.2014658 2.1663818 2.1315386 2.0969553 2.0626485 2.0286343 1.9949272 1.9615401 1.928485 1.8957728 1.8634131 1.8314147 1.7997854 1.7685318 1.73766 1.7071754 1.677082 1.6473837 1.6180836 1.5891839 1.5606866 1.5325929 1.5049036 1.4776188 1.4507385 1.424262 1.3981885 1.3725165 1.3472444 1.32237 1.2978915 1.2738061 1.2501111 1.2268035 1.2038802 1.1813377 1.1591727 1.1373813 1.1159598 1.0949043 1.0742106 1.0538747 1.0338925 1.0142595 0.9949713 0.97602355 0.9574119 0.93913174 0.9211785 0.90354776 0.8862348 0.86923516 0.8525442 0.83615726 0.8200699 0.8042774 0.7887754 0.77355915 0.7586243 0.7439663 0.7295806 0.7154629 0.7016088 0.68801385 0.6746738 0.6615843 0.64874125 0.6361403 0.6237774 0.6116484 0.59974927 0.588076 0.5766246 0.5653911 0.55437183 0.5435629 0.5329605 0.5225609 0.5123606 0.5023558 0.49254313 0.482919 0.47348 0.46422273 0.45514384 0.44624007 0.43750817 0.42894495 0.4205473 0.41231212 0.40423638 0.3963171 0.38855132 0.3809362 0.3734689 0.36614665 0.35896665 0.35192627 0.34502286 0.33825377 0.3316165 0.3251085 0.31872734 0.3124706 0.30633587 0.30032086 0.29442325 0.2886408 0.2829713 0.27741253 0.27196243 0.2666189 0.26137987 0.25624332 0.25120726 0.24626978 0.24142894 0.2366829 0.23202984 0.22746791 0.22299537 0.21861048 0.21431156 0.21009691 0.20596491 0.20191394 0.19794244 0.19404885 0.19023167 0.18648939 0.18282056 0.17922376 0.17569757 0.17224061 0.16885154 0.16552903 0.16227178 0.15907852 0.155948 0.15287897 0.14987026 0.14692067 0.14402905 0.14119425 0.1384152 0.13569076 0.1330199 0.13040152 0.12783465 0.12531824 0.12285132 0.12043291 0.118062064 0.115737855 0.11345935 0.11122567 0.10903593 0.10688926 0.10478483 0.102721795 0.10069936 0.098716706 0.096773066 0.09486768 0.09299978 0.091168635 0.08937353 0.08761375 0.0858886 0.0841974 0.0825395 0.080914214 0.07932093 0.077759 0.076227814 0.074726775 0.07325528 0.07181274 0.07039861 0.069012314 0.067653306 0.06632105 0.06501503 0.06373472 0.06247961 0.061249215 0.060043044 0.05886062 0.057701472 0.05656515 0.0554512 0.054359183 0.05328867 0.05223923 0.051210456 0.050201938

</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="3.325" PeakHeight="253.067" Num="5" zHalfNm="233.008" Error="2.166">
-49.237 7.664 -5.28 2.896 -1.11
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6512.667" A="-1.42344143E11" B="4.3933376E7" C="-3389.796" Error="0.00162"/>
<QuasiParabolic ID="2" StartDistance="6512.667" EndDistance="6545.333" A="0.0" B="1680.7728" C="-0.21804997" Error="0.0315"/>
<QuasiParabolic ID="3" StartDistance="6545.333" EndDistance="6577.0" A="2.28977971E10" B="-7092883.0" C="549.2153" Error="0.0315"/>
<QuasiParabolic ID="4" StartDistance="6577.0" EndDistance="6580.0" A="8.6976475E12" B="-2.64499763E9" C="201089.33" Error="0.00895"/>
<QuasiParabolic ID="5" StartDistance="6580.0" EndDistance="6586.0" A="9.6026399E12" B="-2.92007142E9" C="221991.6" Error="0.0154"/>
<QuasiParabolic ID="6" StartDistance="6586.0" EndDistance="6595.0" A="1.36723625E13" B="-4.15594214E9" C="315817.2" Error="0.0344"/>
<QuasiParabolic ID="7" StartDistance="6595.0" EndDistance="6601.0" A="6.017789E13" B="-1.82592102E10" C="1385056.6" Error="0.0111"/>
<QuasiParabolic ID="8" StartDistance="6601.0" EndDistance="6623.067" A="-2.60019166E13" B="7.8519265E9" C="-592760.1" Error="0.0236"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="98.0" Depth="0.154"/>
<TopsideChapman PeakHeight="253.067" PeakDensity="137166.56" PeakScaleHeight="15.71" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
