<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-20 -140 21:40:00.000"
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="20.0">
<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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 80% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.20 (140) 21:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" 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">
FF202614005202140001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.682" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.385" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.125" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="217.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="217.500" 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="4.075" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="252.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.436" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.125" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.125" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="239.986" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="214.043" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.840" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="36.884" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.066" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.357" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.660" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.930" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="54">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
217.500 217.500 217.500 220.000 220.000 220.000 222.500 222.500 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 227.500 227.500 227.500 230.000 230.000 230.000 230.000 235.000 235.000 235.000 235.000 235.000 237.500 237.500 240.000 240.000 242.500 245.000 245.000 245.000 247.500 250.000 252.500 256.250 260.000 262.077 264.429 267.114 270.210 273.818 278.076 283.178 289.402 297.164 307.114 320.329 338.731 366.123
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 66 78 81 72 75 66 66 63 0 0 63 81 75 63 66 69 72 54 51 54 48 72 69 48 0 45 45 63 66 78 78 75 72 66 63 78 78 75 0 69 0 72 72 0 57 60 63 60 60 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="477">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.218 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.08333 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 160.16667 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.25 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 239.986 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0
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<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.436" PeakHeight="110.0" Num="3" Error="0.0">
-21.087 3.587 -0.282
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.436" EndFrequency="4.45" PeakHeight="239.986" Num="5" zHalfNm="214.043" Error="2.11">
-62.452 13.526 -8.937 4.506 -1.379
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.009" EndDistance="6480.001" A="-8.3368103E11" B="2.5730896E8" C="-19853.896" Error="0.00587"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6505.083" A="-3.948621E11" B="1.21871016E8" C="-9403.4375" Error="0.00284"/>
<QuasiParabolic ID="2" StartDistance="6505.083" EndDistance="6530.167" A="0.0" B="-84.44265" C="0.06326365" Error="0.00312"/>
<QuasiParabolic ID="3" StartDistance="6530.167" EndDistance="6552.0" A="1.34874587E11" B="-4.1466964E7" C="3187.2407" Error="0.00312"/>
<QuasiParabolic ID="4" StartDistance="6552.0" EndDistance="6555.0" A="1.57111773E12" B="-4.7988064E8" C="36643.72" Error="0.015"/>
<QuasiParabolic ID="5" StartDistance="6555.0" EndDistance="6571.0" A="1.08174152E13" B="-3.301024E9" C="251833.89" Error="0.0351"/>
<QuasiParabolic ID="6" StartDistance="6571.0" EndDistance="6586.0" A="5.627215E13" B="-1.71359764E10" C="1304562.0" Error="0.0386"/>
<QuasiParabolic ID="7" StartDistance="6586.0" EndDistance="6590.0" A="-1.39734941E14" B="4.2386371E10" C="-3214292.2" Error="0.0172"/>
<QuasiParabolic ID="8" StartDistance="6590.0" EndDistance="6609.986" A="-2.37617786E13" B="7.1896612E9" C="-543828.6" Error="0.0122"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="75.25" Depth="0.212"/>
<TopsideChapman PeakHeight="239.986" PeakDensity="245688.58" PeakScaleHeight="20.357" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
