<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 06:20:00.000"
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 F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 06:20:00</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">
FF202611904290620001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.396" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.715" 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="3.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="267.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="267.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.150" 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="285.272" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.053" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.242" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.365" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.360" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="21.814" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="36.890" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.060" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="21">
<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 3.425 3.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
267.500 270.000 270.000 275.000 277.500 280.000 285.000 287.500 290.000 295.000 302.500 305.000 312.500 316.250 320.000 329.631 341.484 356.428 375.853 402.131 439.665
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 69 69 96 93 93 87 0 75 105 99 75 72 0 75 93 93 81 75 96 93
</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 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 -1.5625 1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="527">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.13367 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.26733 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.401 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 285.272 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21213934 0.23390245 0.2526677 0.26895854 0.28319094 0.29565945 0.30659118 0.31614733 0.32445762 0.331616 0.33769703 0.34275886 0.34684667 0.3499937 0.352225 0.3535571 0.354 0.3538872 0.35362422 0.35321164 0.35257575 0.35171902 0.35071892 0.34950462 0.34815413 0.3465988 0.34484506 0.34282938 0.3407023 0.33833206 0.33573157 0.33298114 0.3299618 0.3267572 0.32332212 0.31961882 0.31567633 0.31146836 0.3070325 0.30225053 0.2972079 0.29184437 0.28623864 0.28021708 0.27383262 0.26701897 0.25978693 0.25210923 0.24389082 0.23518981 0.22580816 0.21580246 0.20503086 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.20312259 0.20738454 0.2116465 0.21590845 0.22017041 0.22443236 0.2286943 0.23295626 0.23721822 0.24148017 0.24574213 0.25000408 0.25426602 0.258528 0.26278993 0.2670519 0.27131385 0.2755758 0.27983776 0.2840997 0.28836167 0.2926236 0.29688555 0.30114752 0.30540946 0.30967143 0.31393337 0.31819534 0.32245728 0.32671922 0.3309812 0.33524314 0.3395051 0.34376705 0.34802902 0.35229096 0.354 0.3662591 0.3888686 0.4142667 0.44243026 0.47316635 0.506132 0.54096174 0.5773047 0.61487585 0.6535021 0.6930689 0.73354834 0.7749359 0.81727463 0.86063045 0.9050849 0.950742 0.9977156 1.0461075 1.0960572 1.1476988 1.2011671 1.2566108 1.3141598 1.3739793 1.4361782 1.500877 1.5681815 1.6381438 1.7107303 1.7858891 1.8634373 1.943085 2.0244367 2.1069434 2.189983 2.2728772 2.3548892 2.4353147 2.5135343 2.5890248 2.661399 2.7303486 2.7957184 2.8574069 2.915422 2.9697883 3.020597 3.067956 3.111969 3.1527684 3.1904848 3.2252288 3.2571254 3.286273 3.31278 3.336733 3.3582125 3.3772995 3.3940592 3.4085429 3.4208024 3.4308782 3.4388063 3.4446108 3.4483125 3.4499228 3.45 3.4496274 3.447921 3.4448693 3.440514 3.4348972 3.42806 3.4200451 3.4108942 3.4006488 3.3893507 3.3770409 3.3637602 3.349549 3.3344474 3.3184946 3.3017292 3.2841892 3.2659123 3.2469351 3.2272933 3.2070222 3.1861563 3.1647289 3.142773 3.1203203 3.097402 3.074048 3.0502882 3.0261505 3.0016627 2.976852 2.9517436 2.9263632 2.9007347 2.8748815 2.8488266 2.8225915 2.7961972 2.7696638 2.7430112 2.7162578 2.6894214 2.6625197 2.635569 2.6085851 2.5815835 2.5545783 2.5275836 2.5006127 2.473678 2.4467921 2.4199662 2.3932111 2.3665373 2.3399549 2.313473 2.2871006 2.2608464 2.2347178 2.2087228 2.1828682 2.157161 2.131607 2.1062129 2.0809834 2.055924 2.0310395 2.0063345 1.9818133 1.9574796 1.9333371 1.9093889 1.8856382 1.862088 1.8387405 1.8155981 1.792663 1.769937 1.7474217 1.7251186 1.703029 1.6811539 1.6594943 1.6380509 1.6168244 1.5958151 1.5750233 1.5544493 1.534093 1.5139544 1.4940332 1.4743292 1.454842 1.435571 1.4165156 1.397675 1.3790487 1.3606356 1.3424349 1.3244455 1.3066664 1.2890965 1.2717344 1.2545791 1.2376292 1.2208833 1.2043401 1.1879982 1.171856 1.1559122 1.140165 1.124613 1.1092547 1.0940883 1.0791123 1.064325 1.0497246 1.0353096 1.021078 1.0070283 0.9931588 0.9794677 0.9659532 0.9526135 0.93944687 0.92645156 0.91362584 0.9009679 0.8884759 0.8761481 0.86398274 0.851978 0.8401322 0.82844347 0.81691015 0.80553037 0.79430246 0.7832247 0.77229524 0.76151246 0.7508746 0.7403799 0.73002684 0.7198135 0.7097384 0.69979966 0.68999577 0.6803251 0.67078596 0.6613767 0.6520958 0.64294165 0.63391256 0.6250071 0.61622363 0.6075607 0.59901667 0.59059006 0.5822794 0.57408315 0.5659999 0.5580282 0.5501666 0.5424136 0.53476787 0.527228 0.51979256 0.5124602 0.5052296 0.49809936 0.4910682 0.48413482 0.4772979 0.47055617 0.46390834 0.45735317 0.4508894 0.44451588 0.43823132 0.43203455 0.4259244 0.41989967 0.41395923 0.40810198 0.4023267 0.39663237 0.39101782 0.385482 0.38002387 0.3746423 0.36933628 0.36410478 0.35894677 0.35386127 0.34884724 0.34390375 0.3390298 0.3342244 0.32948667 0.32481566 0.32021043 0.31567007 0.3111937 0.30678043 0.30242938 0.29813972 0.29391053 0.28974104 0.2856304 0.28157777 0.27758238 0.2736434 0.26976004 0.26593158 0.2621572 0.25843617 0.25476772 0.25115117 0.24758573 0.24407072 0.24060544 0.23718919 0.23382127 0.23050103 0.22722776 0.22400083 0.22081959 0.21768339 0.21459161 0.21154362 0.2085388 0.20557654 0.20265627 0.19977736 0.19693926 0.19414137 0.19138315 0.18866402 0.18598345 0.18334088 0.18073577 0.17816761 0.17563587 0.17314005 0.17067961 0.16825409 0.16586298 0.16350578 0.16118203 0.15889125 0.15663299 0.15440677 0.15221214 0.15004866 0.1479159 0.1458134 0.14374076 0.14169753 0.1396833 0.1376977 0.13574027 0.13381064 0.13190842 0.1300332 0.12818462 0.12636228 0.124565825 0.1227949 0.12104911 0.11932813 0.11763159 0.11595915 0.11431048 0.11268522 0.11108305 0.10950365 0.10794669 0.106411844 0.10489881 0.10340727 0.10193694 0.100487486 0.099058636 0.09765009 0.09626156 0.09489276 0.09354342 0.09221325 0.09090199 0.08960937 0.08833511 0.08707897 0.08584069 0.08462 0.08341666 0.082230434 0.081061065 0.07990832 0.07877196 0.077651754 0.07654747 0.07545889 0.074385785 0.07332793 0.072285116 0.07125713 0.07024376 0.069244795 0.06826003 0.06728927 0.06633231 0.065388955 0.06445901 0.06354229 0.0626386 0.061747767 0.060869597 0.060003914 0.05915054 0.058309298 0.05748002 0.05666253 0.055856667 0.055062264 0.054279156 0.053507183 0.052746188 0.05199601 0.051256504 0.050527513

</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="3.45" PeakHeight="285.272" Num="5" zHalfNm="257.053" Error="3.045">
-70.704 7.091 -5.118 2.875 -1.015
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6516.134" A="-1.16456088E11" B="3.5943236E7" C="-2773.2725" Error="0.00176"/>
<QuasiParabolic ID="2" StartDistance="6516.134" EndDistance="6552.267" A="0.0" B="742.942" C="-0.07398311" Error="0.0149"/>
<QuasiParabolic ID="3" StartDistance="6552.267" EndDistance="6587.0" A="2.50862162E10" B="-7737441.0" C="596.5977" Error="0.0149"/>
<QuasiParabolic ID="4" StartDistance="6587.0" EndDistance="6593.0" A="4.5231736E12" B="-1.37348429E9" C="104266.46" Error="0.0113"/>
<QuasiParabolic ID="5" StartDistance="6593.0" EndDistance="6599.0" A="3.56693049E12" B="-1.08340608E9" C="82267.51" Error="0.0042"/>
<QuasiParabolic ID="6" StartDistance="6599.0" EndDistance="6609.0" A="5.578299E12" B="-1.6930039E9" C="128456.17" Error="0.00649"/>
<QuasiParabolic ID="7" StartDistance="6609.0" EndDistance="6628.0" A="1.52096819E13" B="-4.6076303E9" C="348960.53" Error="0.0141"/>
<QuasiParabolic ID="8" StartDistance="6628.0" EndDistance="6655.272" A="-1.46432642E13" B="4.4005007E9" C="-330590.72" Error="0.00255"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.401" Depth="0.154"/>
<TopsideChapman PeakHeight="285.272" PeakDensity="147673.7" PeakScaleHeight="21.814" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
