<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 02:00:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 02:00:00</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">
FF202611904290200001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.227" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.971" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.775" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="290.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="301.783" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="270.297" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.907" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="45.125" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.460" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.813" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="44.760" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.150" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 295.000 300.000 305.000 310.000 315.000 320.000 330.000 347.500 349.848 352.626 355.965 360.055 365.180 371.789 380.638 393.097 411.942 443.770
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 81 81 81 87 81 96 87 78 78 84 0 0 0 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 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 7.8125 10.9375 -1.5625 -7.8125 1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="573">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.19667 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.39333 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.59 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 301.783 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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0.30601558 0.31015575 0.31429592 0.31843606 0.32257622 0.32671636 0.33085653 0.33499667 0.33913684 0.343277 0.34741715 0.3515573 0.354 0.36369073 0.38731343 0.41105115 0.43504938 0.45941198 0.48423338 0.5095794 0.5355182 0.5620985 0.58938473 0.6174165 0.6462408 0.6759062 0.70644706 0.7378991 0.77030915 0.803709 0.83813053 0.8736056 0.91016525 0.94783413 0.9866263 1.0265725 1.0676862 1.109974 1.1534518 1.198101 1.2439291 1.2909172 1.3390454 1.3882924 1.4386113 1.4899684 1.5423124 1.5955818 1.6496984 1.7045956 1.7601898 1.8163881 1.873089 1.9301827 1.987575 2.04514 2.1027675 2.1603389 2.2177293 2.274808 2.3314831 2.3876104 2.4430838 2.4977877 2.5516155 2.6044452 2.6562006 2.7067628 2.756056 2.8039863 2.8504589 2.895421 2.9387834 2.980488 3.020464 3.0586631 3.0950332 3.1295197 3.1620834 3.1926796 3.2212741 3.2478366 3.272332 3.2947423 3.315037 3.333195 3.349203 3.3630402 3.374696 3.3841603 3.3914237 3.3964782 3.3993208 3.4 3.3999724 3.399142 3.3971782 3.3941123 3.389976 3.3848007 3.3786185 3.3714607 3.3633595 3.3543463 3.3444526 3.33371 3.3221493 3.309801 3.296696 3.282864 3.268335 3.253138 3.237302 3.2208552 3.2038257 3.1862402 3.168126 3.1495094 3.1304157 3.1108701 3.0908976 3.0705214 3.0497653 3.0286522 3.007204 2.9854424 2.9633884 2.9410625 2.918484 2.8956728 2.872647 2.8494253 2.8260245 2.8024619 2.7787538 2.754916 2.7309637 2.7069118 2.6827743 2.6585653 2.6342978 2.6099846 2.5856378 2.5612693 2.53689 2.5125115 2.4881437 2.4637966 2.4394798 2.4152026 2.3909736 2.3668013 2.3426936 2.318658 2.294702 2.2708328 2.2470562 2.2233794 2.1998074 2.1763468 2.1530023 2.129779 2.106682 2.0837157 2.0608845 2.038192 2.0156426 1.9932393 1.9709857 1.9488848 1.9269396 1.9051527 1.8835267 1.8620638 1.8407661 1.8196357 1.7986745 1.7778838 1.7572653 1.7368205 1.7165502 1.6964557 1.676538 1.6567976 1.6372356 1.6178523 1.5986482 1.5796238 1.5607791 1.5421145 1.5236299 1.5053254 1.487201 1.4692563 1.451491 1.4339051 1.416498 1.3992691 1.3822182 1.3653445 1.3486475 1.3321264 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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="3.4" PeakHeight="301.783" Num="5" zHalfNm="270.297" Error="2.926">
-80.542 0.769 -1.22 0.794 0.006
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6517.197" A="-1.09927408E11" B="3.3928212E7" C="-2617.7922" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.197" EndDistance="6554.393" A="0.0" B="-4984.4165" C="0.80484533" Error="0.109"/>
<QuasiParabolic ID="3" StartDistance="6554.393" EndDistance="6580.0" A="1.25276275E11" B="-3.8234752E7" C="2917.389" Error="0.109"/>
<QuasiParabolic ID="4" StartDistance="6580.0" EndDistance="6585.0" A="-6.4672544E11" B="1.96416224E8" C="-14913.232" Error="0.0167"/>
<QuasiParabolic ID="5" StartDistance="6585.0" EndDistance="6603.0" A="1.7234289E12" B="-5.23448384E8" C="39746.19" Error="0.126"/>
<QuasiParabolic ID="6" StartDistance="6603.0" EndDistance="6650.0" A="5.5474824E12" B="-1.68172595E9" C="127454.625" Error="0.0793"/>
<QuasiParabolic ID="7" StartDistance="6650.0" EndDistance="6671.783" A="-1.35550908E13" B="4.0634089E9" C="-304510.4" Error="0.0108"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.59" Depth="0.154"/>
<TopsideChapman PeakHeight="301.783" PeakDensity="143424.31" PeakScaleHeight="23.813" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
