<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-19 -109 11:05:00.000"
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="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 55 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 20% PACIFIC flags: F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.19 (109) 11:05:00</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">
FF202610904191105001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="6.875" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="4.068" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.965" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.975" Name="fminF" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="242.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.235" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.075" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.075" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="197.953" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="174.183" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.025" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="28.268" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.937" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="17.363" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="48.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="117">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 6.725 6.75 6.775 6.8 6.825 6.85 6.875
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 225.000 223.750 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.625 226.250 226.875 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.750 228.000 228.250 228.500 228.750 229.000 229.250 229.500 229.750 230.000 230.250 230.500 230.750 231.000 231.250 231.500 231.750 232.000 232.250 232.500 232.500 235.000 235.000 235.000 235.000 237.500 237.500 237.500 237.500 237.500 237.500 237.500 237.500 237.500 240.000 240.000 240.000 240.000 240.000 240.000 242.500 242.500 242.500 242.500 242.500 245.000 248.530 281.967
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 87 75 75 87 90 78 78 78 81 72 69 66 66 63 63 63 66 42 42 57 57 69 69 93 93 93 90 90 87 72 69 69 69 78 81 102 105 108 108 99 99 99 99 96 96 96 93 102 99 81 87 78 78 93 93 96 93 96 96 105 105 93 90 90 90 90 90 63 63 87 84 87 0 0 0 75 72 0 93 96 96 96 96 96 96 105 105 93 93 90 93 90 90 78 84 81 84 90 93 96 96 93 84 84 90 66 72 87 75 72 72 84 90 75 75 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="415">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.699 90.0 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 117.26466 118.0 119.0 120.0 121.0 122.0 123.0 124.0 124.529335 125.0 126.0 127.0 128.0 129.0 130.0 131.0 131.794 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 197.953 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0
</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="2.235" PeakHeight="110.0" Num="3" Error="0.0">
-29.399 11.569 -2.471
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.235" EndFrequency="6.875" PeakHeight="197.953" Num="5" zHalfNm="174.183" Error="1.944">
-49.187 -24.606 6.711 1.838 -0.915
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6459.7705" EndDistance="6480.001" A="-2.13938403E13" B="6.6030372E9" C="-509488.62" Error="0.00917"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6487.265" A="-1.9339596E13" B="5.9690107E9" C="-460566.8" Error="2.02E-4"/>
<QuasiParabolic ID="2" StartDistance="6487.265" EndDistance="6494.529" A="0.0" B="74642.36" C="-7.0883827" Error="0.00309"/>
<QuasiParabolic ID="3" StartDistance="6494.529" EndDistance="6501.0" A="-4.5920105E12" B="1.41001766E9" C="-108234.29" Error="0.00453"/>
<QuasiParabolic ID="4" StartDistance="6501.0" EndDistance="6503.0" A="2.19950661E14" B="-6.7669406E10" C="5204750.0" Error="0.00449"/>
<QuasiParabolic ID="5" StartDistance="6503.0" EndDistance="6505.0" A="-6.7934492E13" B="2.08697754E10" C="-1602814.1" Error="0.00727"/>
<QuasiParabolic ID="6" StartDistance="6505.0" EndDistance="6525.0" A="-1.33826675E12" B="3.94379328E8" C="-28994.324" Error="0.00718"/>
<QuasiParabolic ID="7" StartDistance="6525.0" EndDistance="6548.0" A="1.20142525E13" B="-3.69834675E9" C="284624.53" Error="0.00687"/>
<QuasiParabolic ID="8" StartDistance="6548.0" EndDistance="6562.0" A="5.1485077E13" B="-1.57541888E10" C="1205198.9" Error="0.00352"/>
<QuasiParabolic ID="9" StartDistance="6562.0" EndDistance="6565.0" A="-3.02489073E13" B="9.1571149E9" C="-692949.8" Error="0.00166"/>
<QuasiParabolic ID="10" StartDistance="6565.0" EndDistance="6567.953" A="-4.24100908E14" B="1.29142489E11" C="-9831211.0" Error="8.89E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="21.794" Depth="0.133"/>
<TopsideChapman PeakHeight="197.953" PeakDensity="586422.1" PeakScaleHeight="17.363" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
