<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-25 -145 21:45:00.000"
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: 70% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.25 (145) 21:45:00</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">
FF202614505252145001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="4.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.761" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.983" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.600" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.475" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.675" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="200.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="200.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="87.500" Name="h`Es" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.975" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="252.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.401" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.475" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.475" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="225.256" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="200.093" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.728" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.150" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="35.660" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.798" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.400" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.720" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.890" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.475" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="72">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.475 2.5 2.525 2.55 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
200.000 200.000 200.000 200.000 200.000 200.000 200.000 202.500 202.500 202.500 202.500 205.000 205.000 205.000 205.000 205.000 205.000 205.500 206.000 206.500 207.000 207.500 207.500 207.500 212.500 212.500 212.500 212.500 212.500 212.500 215.000 215.000 215.000 215.000 217.500 217.500 217.500 217.500 220.000 220.000 222.500 222.500 222.500 225.000 225.000 225.000 227.500 230.000 230.000 232.500 232.500 235.000 235.000 237.500 240.000 240.000 245.000 245.000 247.500 250.000 252.500 257.500 261.250 265.000 268.750 272.500 277.500 280.000 286.310 293.595 302.100 312.160
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<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 60 63 63 63 63 60 63 63 63 66 63 51 54 42 39 60 0 0 0 0 69 72 69 66 66 0 0 72 78 84 87 72 75 69 69 69 75 90 90 75 78 75 75 75 72 72 63 54 51 54 51 66 63 66 63 78 81 90 90 63 63 0 0 0 69 72 72 69 0 72 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 -3.125 3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 -3.125 -9.375 3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575 2.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
90.000 89.375 88.750 88.125 87.500 90.000 90.000 90.000 90.000 90.000 90.000 90.000 92.500 92.917 93.333 93.750 94.167 94.583 95.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 0 57 45 51 0 51 63 63 78 66 0 0 0 0 0 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
3.125 -3.125 3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="442">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.655 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 225.256 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0
</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="0.401" PeakHeight="110.0" Num="3" Error="0.0">
-20.243 3.117 -0.219
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.401" EndFrequency="4.25" PeakHeight="225.256" Num="5" zHalfNm="200.093" Error="1.372">
-59.587 12.264 -7.802 3.177 -0.308
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.009" EndDistance="6480.001" A="-7.0506748E11" B="2.17613424E8" C="-16790.998" Error="0.00374"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6501.0" A="-3.66108738E11" B="1.12996528E8" C="-8718.707" Error="0.00182"/>
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<QuasiParabolic ID="3" StartDistance="6522.0" EndDistance="6542.0" A="1.08387287E11" B="-3.3367986E7" C="2568.1887" Error="0.013"/>
<QuasiParabolic ID="4" StartDistance="6542.0" EndDistance="6544.0" A="1.77546189E13" B="-5.4281196E9" C="414884.88" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6544.0" EndDistance="6548.0" A="3.15313514E12" B="-9.6556314E8" C="73919.38" Error="0.00383"/>
<QuasiParabolic ID="6" StartDistance="6548.0" EndDistance="6554.0" A="8.9618016E12" B="-2.73974349E9" C="209394.36" Error="0.00737"/>
<QuasiParabolic ID="7" StartDistance="6554.0" EndDistance="6559.0" A="2.50800337E13" B="-7.6583373E9" C="584630.4" Error="0.00443"/>
<QuasiParabolic ID="8" StartDistance="6559.0" EndDistance="6568.0" A="7.0787529E13" B="-2.15956726E10" C="1647089.2" Error="0.0127"/>
<QuasiParabolic ID="9" StartDistance="6568.0" EndDistance="6579.0" A="-4.3632309E13" B="1.32459325E10" C="-1005286.3" Error="0.00714"/>
<QuasiParabolic ID="10" StartDistance="6579.0" EndDistance="6595.256" A="-2.42662947E13" B="7.3587118E9" C="-557861.1" Error="0.00289"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="63.0" Depth="0.137"/>
<TopsideChapman PeakHeight="225.256" PeakDensity="224100.5" PeakScaleHeight="19.4" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
