<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-21 -052 07:20:00.000"
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 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" >
2026.02.21 (052) 07:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.16" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.96" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="85.88234" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202605202210720001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.347" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.135" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.275" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.275" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="270.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="270.000" 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="0.175" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.575" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="341.136" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.425" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.425" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="287.301" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.192" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.391" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="43.229" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.568" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.433" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="55">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 3.475 3.5 3.525 3.55 3.575 3.6 3.625
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
278.571 277.143 275.714 274.286 272.857 271.429 270.000 270.000 270.000 271.667 273.333 275.000 276.667 278.333 280.000 280.000 282.500 283.750 285.000 287.500 290.000 292.500 295.000 297.500 300.000 301.250 302.500 303.125 303.750 304.375 305.000 305.833 306.667 307.500 312.500 314.091 315.682 317.273 318.864 320.455 322.045 323.636 325.227 326.818 328.409 330.000 331.591 333.182 334.773 336.364 337.955 339.545 341.136 358.620 404.438
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 42 45 51 78 72 81 84 75 69 66 66 66 66 69 69 72 66 72 69 57 57 48 45 63 57 60 54 75 84 96 90 87 84 96 93 90 84 93 93 87 0 105 102 99 102 99 99 78 69 75 81 78 0 69
</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 -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 -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="542">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.115 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 176.23 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 209.345 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 287.301 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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3.4028964 3.3825574 3.361607 3.340078 3.3180027 3.295412 3.2723372 3.2488074 3.2248518 3.2004988 3.1757755 3.1507087 3.1253238 3.0996459 3.0736992 3.047507 3.0210922 2.9944763 2.9676807 2.9407253 2.9136302 2.886414 2.8590949 2.8316903 2.8042173 2.7766917 2.7491293 2.7215445 2.693952 2.6663651 2.6387973 2.6112604 2.5837667 2.5563276 2.5289536 2.5016553 2.4744425 2.4473243 2.4203098 2.3934073 2.366625 2.33997 2.3134499 2.2870712 2.2608404 2.2347631 2.2088456 2.1830926 2.1575093 2.1321003 2.10687 2.0818222 2.0569608 2.0322893 2.007811 1.9835287 1.9594452 1.935563 1.9118842 1.8884109 1.8651451 1.8420882 1.8192419 1.7966073 1.7741855 1.7519776 1.7299842 1.708206 1.6866435 1.665297 1.6441668 1.6232529 1.6025554 1.5820739 1.5618086 1.5417588 1.5219241 1.5023041 1.4828981 1.4637054 1.4447254 1.425957 1.4073993 1.3890516 1.3709124 1.3529811 1.3352561 1.3177365 1.300421 1.2833083 1.2663969 1.2496854 1.2331728 1.2168572 1.2007372 1.1848116 1.1690785 1.1535366 1.1381841 1.1230196 1.1080413 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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="3.625" PeakHeight="287.301" Num="5" zHalfNm="257.192" Error="1.564">
-77.54 -1.229 1.128 -0.946 0.631
</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="6513.115" A="-1.38537927E11" B="4.2758616E7" C="-3299.1506" Error="0.00164"/>
<QuasiParabolic ID="2" StartDistance="6513.115" EndDistance="6546.23" A="0.0" B="221.35765" C="0.00604102" Error="0.00361"/>
<QuasiParabolic ID="3" StartDistance="6546.23" EndDistance="6578.0" A="3.6117352E10" B="-1.1116509E7" C="855.377" Error="0.00711"/>
<QuasiParabolic ID="4" StartDistance="6578.0" EndDistance="6581.0" A="5.9615724E12" B="-1.81271424E9" C="137796.52" Error="0.017"/>
<QuasiParabolic ID="5" StartDistance="6581.0" EndDistance="6584.0" A="1.67924695E11" B="-5.1994716E7" C="4023.5774" Error="0.00654"/>
<QuasiParabolic ID="6" StartDistance="6584.0" EndDistance="6594.0" A="2.91834351E12" B="-8.8748038E8" C="67471.76" Error="0.00898"/>
<QuasiParabolic ID="7" StartDistance="6594.0" EndDistance="6627.0" A="7.2615445E12" B="-2.20479949E9" C="167359.47" Error="0.0102"/>
<QuasiParabolic ID="8" StartDistance="6627.0" EndDistance="6645.0" A="-2.31622391E12" B="6.8572966E8" C="-50727.84" Error="0.00749"/>
<QuasiParabolic ID="9" StartDistance="6645.0" EndDistance="6657.301" A="-2.05044088E13" B="6.1599764E9" C="-462635.06" Error="0.00278"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="99.345" Depth="0.154"/>
<TopsideChapman PeakHeight="287.301" PeakDensity="163035.05" PeakScaleHeight="22.433" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
