<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 04:05:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 04:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202611004200405001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.687" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.878" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.075" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.275" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="222.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="222.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="260.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.075" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.075" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="239.959" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.954" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.435" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="34.289" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.850" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.770" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.680" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="36">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.075 2.1 2.125 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
222.500 222.500 225.000 225.625 226.250 226.875 227.500 227.500 228.750 230.000 232.500 232.500 235.000 235.000 235.000 235.000 237.500 240.000 241.500 243.000 244.500 246.000 247.500 250.000 252.500 255.000 257.500 260.000 265.000 270.000 275.000 281.063 288.204 296.738 307.118 320.015
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 78 0 0 0 63 63 0 54 54 57 66 66 81 75 66 63 0 0 0 0 63 69 69 69 69 72 66 66 39 42 0 0 0 0
</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 4.6875 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 1.5625 -1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 -1.5625 -1.5625 1.5625 -1.5625 -4.6875 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="426">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.25 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 162.5 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 188.75 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 239.959 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0
</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="2.95" PeakHeight="239.959" Num="5" zHalfNm="215.954" Error="1.694">
-56.825 9.855 -6.144 3.019 -1.114
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="19" 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="6506.25" A="-2.20048884E11" B="6.791632E7" C="-5240.3315" Error="0.00141"/>
<QuasiParabolic ID="2" StartDistance="6506.25" EndDistance="6532.5" A="0.0" B="279.3763" C="-0.0029270602" Error="0.004"/>
<QuasiParabolic ID="3" StartDistance="6532.5" EndDistance="6534.0" A="-1.71493622E12" B="5.24880288E8" C="-40161.695" Error="0.00926"/>
<QuasiParabolic ID="4" StartDistance="6534.0" EndDistance="6535.0" A="2.53762575E12" B="-7.7679155E8" C="59445.883" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6535.0" EndDistance="6536.0" A="-2.41142596E12" B="7.3783782E8" C="-56440.07" Error="1.58E-10"/>
<QuasiParabolic ID="6" StartDistance="6536.0" EndDistance="6537.0" A="2.53924291E12" B="-7.7705466E8" C="59448.28" Error="1.5E-10"/>
<QuasiParabolic ID="7" StartDistance="6537.0" EndDistance="6538.0" A="-2.41282476E12" B="7.3803411E8" C="-56437.355" Error="1.42E-10"/>
<QuasiParabolic ID="8" StartDistance="6538.0" EndDistance="6539.0" A="2.54089442E12" B="-7.7732819E8" C="59451.473" Error="0.0"/>
<QuasiParabolic ID="9" StartDistance="6539.0" EndDistance="6540.0" A="-2.16595078E12" B="6.6229414E8" C="-50628.23" Error="0.0"/>
<QuasiParabolic ID="10" StartDistance="6540.0" EndDistance="6542.0" A="7.041448E11" B="-2.15410912E8" C="16474.604" Error="0.00957"/>
<QuasiParabolic ID="11" StartDistance="6542.0" EndDistance="6558.0" A="3.24422533E10" B="-1.0060097E7" C="779.79944" Error="0.00965"/>
<QuasiParabolic ID="12" StartDistance="6558.0" EndDistance="6559.0" A="7.494957E12" B="-2.28591078E9" C="174296.94" Error="0.0"/>
<QuasiParabolic ID="13" StartDistance="6559.0" EndDistance="6567.0" A="6.6073552E12" B="-2.01525926E9" C="153664.86" Error="0.00813"/>
<QuasiParabolic ID="14" StartDistance="6567.0" EndDistance="6572.0" A="6.8426368E12" B="-2.08691507E9" C="159120.61" Error="0.004"/>
<QuasiParabolic ID="15" StartDistance="6572.0" EndDistance="6575.0" A="1.25803409E13" B="-3.83302093E9" C="291964.94" Error="0.00269"/>
<QuasiParabolic ID="16" StartDistance="6575.0" EndDistance="6586.0" A="2.30485372E13" B="-7.0172631E9" C="534112.6" Error="0.00931"/>
<QuasiParabolic ID="17" StartDistance="6586.0" EndDistance="6598.0" A="-2.03639646E13" B="6.1660047E9" C="-466742.8" Error="0.00339"/>
<QuasiParabolic ID="18" StartDistance="6598.0" EndDistance="6609.959" A="-1.23336529E13" B="3.73183949E9" C="-282280.47" Error="0.00128"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="78.75" Depth="0.154"/>
<TopsideChapman PeakHeight="239.959" PeakDensity="107971.46" PeakScaleHeight="18.77" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
