<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-07 -097 06:25:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.07 (097) 06:25:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609704070625001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.669" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.545" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.575" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.575" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.775" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="265.833" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.575" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.575" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="240.578" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="218.441" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.217" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.693" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.725" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.755" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.100" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.780" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="122">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 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 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 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65 4.675 4.7 4.725 4.75 4.775 4.8 4.825 4.85 4.875 4.9 4.925 4.95 4.975 5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3 5.325 5.35 5.375 5.4 5.425 5.45 5.475 5.5 5.525 5.55 5.575 5.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
217.500 217.500 217.500 218.333 219.167 220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.500 221.000 221.500 222.000 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 223.750 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 228.750 230.000 230.000 230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 232.500 232.500 232.500 232.500 233.125 233.750 234.375 235.000 237.500 237.500 237.500 237.500 237.500 237.500 238.125 238.750 239.375 240.000 240.000 240.000 242.500 242.500 242.500 242.500 242.500 245.000 247.500 247.500 247.500 247.500 247.500 247.500 250.000 250.000 251.250 252.500 252.500 252.500 255.000 255.000 257.500 257.500 257.500 260.000 260.000 261.250 262.500 264.167 265.833 267.500 270.000 272.500 275.000 277.500 280.625 283.750 286.875 290.000 295.000 300.000 303.260 306.838 310.783
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 69 0 0 72 72 72 0 0 0 42 0 0 0 0 78 0 90 93 0 93 0 0 90 0 90 0 0 93 0 0 96 96 93 93 81 0 0 0 81 0 81 78 66 66 78 0 102 105 84 0 0 84 108 108 108 0 0 0 105 108 96 0 0 0 99 96 99 96 96 96 96 0 0 0 93 93 102 105 84 0 0 105 0 81 0 96 96 96 96 96 99 0 99 99 96 96 99 93 0 72 96 96 0 72 0 0 63 63 84 0 84 0 0 0 51 0 0 45 60 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="432">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.08333 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 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.25 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 240.578 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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</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="5.6" PeakHeight="240.578" Num="5" zHalfNm="218.441" Error="0.908">
-58.596 5.459 -3.706 1.381 0.134
</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="6505.083" A="-2.40913678E11" B="7.4356072E7" C="-5737.226" Error="0.00142"/>
<QuasiParabolic ID="2" StartDistance="6505.083" EndDistance="6530.167" A="0.0" B="-4793.067" C="0.7768316" Error="0.0711"/>
<QuasiParabolic ID="3" StartDistance="6530.167" EndDistance="6549.0" A="1.82819979E11" B="-5.6040364E7" C="4294.595" Error="0.0711"/>
<QuasiParabolic ID="4" StartDistance="6549.0" EndDistance="6553.0" A="-6.3750137E11" B="1.94477696E8" C="-14831.841" Error="0.00622"/>
<QuasiParabolic ID="5" StartDistance="6553.0" EndDistance="6564.0" A="7.3407524E12" B="-2.24051507E9" C="170960.38" Error="0.0742"/>
<QuasiParabolic ID="6" StartDistance="6564.0" EndDistance="6571.0" A="1.96237601E13" B="-5.9830528E9" C="456040.94" Error="0.0238"/>
<QuasiParabolic ID="7" StartDistance="6571.0" EndDistance="6590.0" A="5.6802989E13" B="-1.72992082E10" C="1317109.0" Error="0.0536"/>
<QuasiParabolic ID="8" StartDistance="6590.0" EndDistance="6610.578" A="-6.3574764E13" B="1.92342528E10" C="-1454777.2" Error="0.0197"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="75.25" Depth="0.154"/>
<TopsideChapman PeakHeight="240.578" PeakDensity="389081.88" PeakScaleHeight="16.755" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
