<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-21 -294 08:30:00.000"
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 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" >
2026.10.21 (294) 08:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.32" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-16.06" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="62.486557" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202629410210830001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.409" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="19.429" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.925" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.925" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.050" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="335.796" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.904" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.925" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.925" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="271.436" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.757" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.494" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="46.756" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.237" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.134" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="56.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.230" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="72">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.925 3.95 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 290.000 291.667 293.333 295.000 296.250 297.500 297.500 297.500 300.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 301.250 302.500 302.500 302.500 303.750 305.000 305.000 305.000 305.000 305.000 307.500 307.500 307.500 307.500 307.500 310.000 310.000 310.000 310.000 311.250 312.500 312.500 312.500 313.125 313.750 314.375 315.000 315.000 317.500 320.000 330.000 322.500 327.500 327.500 328.333 329.167 330.000 330.000 330.000 329.167 328.333 327.500 327.500 328.750 330.000 330.163 330.366 330.627 330.975 331.461 332.189 333.397 335.796 342.858
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 87 84 81 0 93 75 84 90 90 87 87 72 75 81 72 75 75 69 72 57 54 45 42 45 48 72 66 93 0 69 66 72 75 75 75 87 84 78 84 99 96 93 93 96 96 93 90 87 96 93 93 81 66 84 87 81 75 90 93 93 90 90 90 96 96 99 96 84 96 96 84
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="574">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.387 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 132.39433 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 154.78867 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 177.183 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 271.436 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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1.7069558 1.7665977 1.827277 1.888741 1.9507345 2.0129924 2.0753138 2.137494 2.1993687 2.26081 2.3217235 2.3820353 2.4416752 2.5006533 2.5589178 2.6164925 2.6733649 2.7295809 2.7851267 2.8400452 2.8943653 2.9481142 3.001316 3.0540042 3.1062086 3.157947 3.209274 3.2602015 3.3107576 3.360977 3.4108815 3.4604983 3.5098515 3.5589607 3.6078672 3.6565824 3.7051296 3.753528 3.801807 3.8499887 3.8980908 3.9461381 3.994149 4.0421467 4.0901604 4.1381955 4.186287 4.2344565 4.282726 4.3311086 4.3796406 4.428346 4.4772344 4.526361 4.575725 4.625372 4.6753187 4.72561 4.776265 4.8273315 4.878831 4.930805 4.983293 5.036322 5.0899343 5.144149 5.1989827 5.254439 5.3104877 5.367022 5.4238462 5.480555 5.5363674 5.5897994 5.6380863 5.676378 5.697702 5.7 5.699671 5.6974916 5.693321 5.6872168 5.6792364 5.6694374 5.6578784 5.644617 5.629712 5.6132207 5.5952 5.5757074 5.5547996 5.5325313 5.508959 5.484136 5.4581165 5.4309535 5.4026985 5.373403 5.3431168 5.3118887 5.2797666 5.246798 5.213029 5.178503 5.1432652 5.107358 5.0708222 5.0336986 4.996026 4.9578433 4.919187 4.880093 4.840596 4.8007307 4.7605286 4.7200212 4.6792397 4.6382136 4.596971 4.555539 4.5139446 4.4722133 4.430369 4.388436 4.3464365 4.304393 4.262325 4.2202535 4.178198 4.136176 4.094206 4.0523043 4.0104866 3.9687693 3.9271665 3.885692 3.8443592 3.8031807 3.762169 3.7213345 3.6806889 3.6402423 3.600004 3.5599835 3.5201893 3.4806297 3.441312 3.402244 3.363432 3.3248823 3.2866008 3.2485933 3.2108648 3.17342 3.136263 3.0993981 3.0628293 3.0265596 2.990592 2.9549298 2.919575 2.8845303 2.8497972 2.815378 2.7812736 2.7474856 2.7140152 2.6808634 2.6480303 2.6155167 2.5833228 2.5514488 2.5198948 2.4886603 2.457745 2.4271488 2.3968706 2.36691 2.337266 2.3079376 2.2789237 2.250223 2.2218344 2.1937566 2.165988 2.1385267 2.1113718 2.084521 2.057973 2.0317254 2.0057766 1.9801248 1.954768 1.929704 1.9049306 1.8804458 1.8562475 1.8323334 1.8087014 1.785349 1.762274 1.739474 1.716947 1.6946901 1.6727012 1.6509781 1.629518 1.6083187 1.5873777 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</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.904" PeakHeight="110.0" Num="3" Error="0.0">
-26.039 7.519 -1.093
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.904" EndFrequency="5.7" PeakHeight="271.436" Num="5" zHalfNm="237.757" Error="1.905">
-80.381 -24.527 16.672 -7.913 1.896
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.086" EndDistance="6480.001" A="-3.61113321E12" B="1.11454733E9" C="-85998.2" Error="0.0293"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6502.394" A="-1.8164503E12" B="5.6063283E8" C="-43257.887" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6502.394" EndDistance="6524.789" A="0.0" B="-11301.613" C="2.0421994" Error="0.0214"/>
<QuasiParabolic ID="3" StartDistance="6524.789" EndDistance="6546.0" A="7.8372844E11" B="-2.40826224E8" C="18500.63" Error="0.0214"/>
<QuasiParabolic ID="4" StartDistance="6546.0" EndDistance="6583.0" A="7.7998179E12" B="-2.38445261E9" C="182236.23" Error="0.0286"/>
<QuasiParabolic ID="5" StartDistance="6583.0" EndDistance="6590.0" A="-4.7663992E12" B="1.43332557E9" C="-107736.29" Error="0.00471"/>
<QuasiParabolic ID="6" StartDistance="6590.0" EndDistance="6639.0" A="5.5616508E12" B="-1.70113562E9" C="130083.23" Error="0.0156"/>
<QuasiParabolic ID="7" StartDistance="6639.0" EndDistance="6641.436" A="-2.32475675E14" B="7.0007652E10" C="-5270488.5" Error="6.9E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="67.183" Depth="0.353"/>
<TopsideChapman PeakHeight="271.436" PeakDensity="403101.75" PeakScaleHeight="23.134" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
