<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-16 -136 23:50:00.000"
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: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.16 (136) 23:50:00</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">
FF202613605162350001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.425" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.325" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.389" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.925" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.925" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.825" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="282.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="282.500" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="317.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.925" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.925" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="286.649" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.596" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.985" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.845" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.278" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.467" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.940" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.080" 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" >
2.925 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
282.500 285.000 285.000 287.500 292.500 295.000 297.500 300.000 305.000 310.000 310.000 315.000 317.500 322.739 328.739 335.677 343.792 353.413 365.000 379.225 397.105
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 69 78 87 90 93 96 108 102 102 105 108 108 102 93 87 90 87 87 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="507">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 145.5 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 216.5 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 286.649 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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0.32146478 0.3258028 0.33014086 0.33447888 0.3388169 0.34315494 0.34749296 0.351831 0.354 0.36493883 0.3879934 0.4126092 0.43874627 0.46637103 0.49542192 0.5258583 0.5576318 0.5906923 0.6250205 0.6605724 0.6973339 0.73530257 0.77445614 0.81479406 0.8563253 0.89904773 0.9429675 0.9880929 1.0344338 1.082 1.1307827 1.1807989 1.2320362 1.2844962 1.3381672 1.3930318 1.4490587 1.5062239 1.5644875 1.6237925 1.6840929 1.74531 1.8073474 1.8701297 1.9335479 1.9974743 2.0617867 2.1263528 2.191012 2.2556148 2.3200026 2.3839898 2.4474168 2.5100894 2.5718503 2.6325145 2.6919 2.7498558 2.8062174 2.8608294 2.9135308 2.9642048 3.0127058 3.0589266 3.1027532 3.1440763 3.1828182 3.2189002 3.2522416 3.2827728 3.3104517 3.335219 3.3570368 3.3758652 3.3916788 3.404451 3.4141622 3.4207983 3.424349 3.425 3.424902 3.4235628 3.4206932 3.416343 3.4105625 3.403402 3.3949118 3.3851423 3.3741438 3.3619661 3.3486586 3.33427 3.3188488 3.3024428 3.2850988 3.2668629 3.2477806 3.227896 3.2072525 3.1858928 3.1638582 3.1411889 3.1179247 3.0941036 3.069763 3.0449386 3.0196657 2.993978 2.9679086 2.941489 2.91475 2.887721 2.8604305 2.8329062 2.805174 2.7772598 2.7491877 2.7209814 2.692663 2.6642542 2.6357756 2.6072466 2.5786862 2.5501127 2.5215428 2.4929926 2.4644783 2.4360142 2.4076145 2.3792922 2.3510604 2.3229308 2.2949145 2.2670226 2.239265 2.2116508 2.1841893 2.156889 2.1297576 2.1028023 2.07603 2.0494475 2.0230603 1.9968742 1.9708943 1.9451252 1.9195714 1.8942369 1.8691252 1.8442398 1.8195837 1.7951595 1.7709697 1.7470164 1.7233016 1.6998268 1.6765935 1.6536028 1.6308558 1.6083531 1.5860953 1.564083 1.5423161 1.5207947 1.4995188 1.4784881 1.4577022 1.4371605 1.4168625 1.3968072 1.3769939 1.3574216 1.3380891 1.3189954 1.300139 1.2815186 1.2631329 1.2449803 1.2270594 1.2093685 1.1919059 1.1746697 1.1576585 1.1408702 1.1243031 1.1079552 1.0918247 1.0759094 1.0602075 1.044717 1.0294358 1.0143617 0.99949294 0.9848272 0.9703625 0.95609665 0.94202757 0.9281531 0.91447115 0.9009796 0.8876762 0.8745589 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0.052525517 0.05172969 0.05094592 0.050174024

</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="3.425" PeakHeight="286.649" Num="5" zHalfNm="259.596" Error="1.558">
-69.873 -0.085 -0.438 0.468 -0.221
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6515.5" A="-1.20627266E11" B="3.7230636E7" C="-2872.6091" Error="0.00172"/>
<QuasiParabolic ID="2" StartDistance="6515.5" EndDistance="6551.0" A="0.0" B="434.61075" C="-0.026669983" Error="0.00818"/>
<QuasiParabolic ID="3" StartDistance="6551.0" EndDistance="6553.0" A="-1.39101222E12" B="4.24488704E8" C="-32384.766" Error="0.0342"/>
<QuasiParabolic ID="4" StartDistance="6553.0" EndDistance="6576.0" A="7.4417127E10" B="-2.276577E7" C="1741.1681" Error="0.0375"/>
<QuasiParabolic ID="5" StartDistance="6576.0" EndDistance="6584.0" A="-9.4052614E10" B="2.8471984E7" C="-2154.6467" Error="0.00789"/>
<QuasiParabolic ID="6" StartDistance="6584.0" EndDistance="6589.0" A="3.19916055E12" B="-9.7189651E8" C="73815.016" Error="0.0384"/>
<QuasiParabolic ID="7" StartDistance="6589.0" EndDistance="6603.0" A="3.60645499E12" B="-1.09552512E9" C="83196.46" Error="0.0231"/>
<QuasiParabolic ID="8" StartDistance="6603.0" EndDistance="6638.0" A="7.9326557E12" B="-2.40589952E9" C="182422.14" Error="0.0358"/>
<QuasiParabolic ID="9" StartDistance="6638.0" EndDistance="6656.649" A="-1.8748304E13" B="5.6329559E9" C="-423095.75" Error="0.0115"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="106.5" Depth="0.154"/>
<TopsideChapman PeakHeight="286.649" PeakDensity="145541.25" PeakScaleHeight="20.467" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
