<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-16 -136 20:40:00.000"
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: 75% PACIFIC flags: Multiple candidates for F2x cusp, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.16 (136) 20:40:00</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">
FF202613605162040001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="6.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="4.036" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.042" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="202.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="202.500" 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="6.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="237.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.245" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.175" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.175" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="206.317" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="185.970" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.261" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="28.947" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.928" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.859" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.380" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="148">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 5.625 5.65 5.675 5.7 5.725 5.75 5.775 5.8 5.825 5.85 5.875 5.9 5.925 5.95 5.975 6.0 6.025 6.05 6.075 6.1 6.125 6.15 6.175 6.2 6.225 6.25 6.275 6.3 6.325 6.35 6.375 6.4 6.425 6.45 6.475 6.5 6.525 6.55 6.575 6.6 6.625 6.65 6.675 6.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
205.000 205.000 205.000 205.000 205.000 205.000 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 202.500 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 212.500 212.500 212.500 212.500 212.500 212.500 212.500 212.500 212.500 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 217.500 217.500 217.500 217.500 217.500 217.500 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 222.500 222.500 225.000 226.250 227.500 227.500 227.500 230.000 230.000 232.500 232.500 235.000 237.500 237.500 237.500 239.848 242.765 246.488 251.402 258.190 268.174 284.309 314.808
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 0 78 78 66 63 66 66 63 63 66 66 93 90 78 78 66 66 69 66 54 54 54 54 75 78 51 48 48 45 60 60 75 75 87 90 66 66 78 78 78 78 90 90 78 81 69 72 72 72 69 69 69 69 45 45 42 42 66 66 90 87 75 75 81 81 69 72 84 84 84 84 93 93 93 93 105 102 90 90 90 93 93 93 93 93 93 93 81 81 90 93 93 93 93 93 93 93 93 90 90 90 93 93 105 105 93 93 90 93 96 96 81 81 93 93 93 93 93 90 90 93 81 78 102 105 84 90 93 90 90 90 90 90 90 87 90 90 90 90 87 84 69 66 57 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 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 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="395">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.071 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 124.66433 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.32866 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 153.993 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 206.317 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0
</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="1.245" PeakHeight="110.0" Num="3" Error="0.0">
-27.431 9.042 -1.54
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.245" EndFrequency="6.7" PeakHeight="206.317" Num="5" zHalfNm="185.97" Error="1.327">
-49.366 -3.462 -0.542 1.802 -0.756
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="19" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6459.942" EndDistance="6480.001" A="-6.7508261E12" B="2.08358835E9" C="-160769.16" Error="0.0145"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6494.664" A="-3.67780613E12" B="1.13512538E9" C="-87585.28" Error="9.82E-4"/>
<QuasiParabolic ID="2" StartDistance="6494.664" EndDistance="6509.329" A="0.0" B="17649.3" C="-1.6139921" Error="0.00652"/>
<QuasiParabolic ID="3" StartDistance="6509.329" EndDistance="6512.0" A="-1.96569643E13" B="6.0370765E9" C="-463527.84" Error="0.0138"/>
<QuasiParabolic ID="4" StartDistance="6512.0" EndDistance="6513.0" A="4.8860097E13" B="-1.50062469E10" C="1152206.4" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6513.0" EndDistance="6514.0" A="-4.822893E13" B="1.48076728E10" C="-1136594.4" Error="1.93E-10"/>
<QuasiParabolic ID="6" StartDistance="6514.0" EndDistance="6515.0" A="4.8890284E13" B="-1.50109389E10" C="1152215.2" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6515.0" EndDistance="6516.0" A="-4.8258164E13" B="1.48120689E10" C="-1136580.5" Error="0.0"/>
<QuasiParabolic ID="8" StartDistance="6516.0" EndDistance="6517.0" A="4.8920915E13" B="-1.50157629E10" C="1152234.1" Error="0.0"/>
<QuasiParabolic ID="9" StartDistance="6517.0" EndDistance="6518.0" A="-4.8287621E13" B="1.48165325E10" C="-1136571.8" Error="1.75E-10"/>
<QuasiParabolic ID="10" StartDistance="6518.0" EndDistance="6519.0" A="4.4855976E13" B="-1.37638902E10" C="1055851.0" Error="0.0"/>
<QuasiParabolic ID="11" StartDistance="6519.0" EndDistance="6521.0" A="-1.88774236E13" B="5.7892316E9" C="-443851.53" Error="0.00668"/>
<QuasiParabolic ID="12" StartDistance="6521.0" EndDistance="6522.0" A="3.6697354E13" B="-1.12556319E10" C="863069.44" Error="0.0"/>
<QuasiParabolic ID="13" StartDistance="6522.0" EndDistance="6523.0" A="-4.3061665E13" B="1.32028221E10" C="-1012003.7" Error="7.84E-11"/>
<QuasiParabolic ID="14" StartDistance="6523.0" EndDistance="6526.0" A="8.7465675E13" B="-2.68178248E10" C="2055652.8" Error="0.0183"/>
<QuasiParabolic ID="15" StartDistance="6526.0" EndDistance="6532.0" A="1.12674996E13" B="-3.46564096E9" C="266487.66" Error="0.011"/>
<QuasiParabolic ID="16" StartDistance="6532.0" EndDistance="6545.0" A="2.27394779E13" B="-6.9781878E9" C="535359.9" Error="0.00926"/>
<QuasiParabolic ID="17" StartDistance="6545.0" EndDistance="6562.0" A="6.0678639E13" B="-1.85715139E10" C="1421022.8" Error="0.0103"/>
<QuasiParabolic ID="18" StartDistance="6562.0" EndDistance="6576.317" A="-1.1690094E14" B="3.55521E10" C="-2702995.5" Error="0.00442"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="43.993" Depth="0.194"/>
<TopsideChapman PeakHeight="206.317" PeakDensity="556947.9" PeakScaleHeight="15.859" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
