<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 05:00:00.000"
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 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" >
2026.04.29 (119) 05:00:00</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">
FF202611904290500001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.207" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.626" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.025" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="297.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="297.500" 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="3.425" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="340.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="303.187" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.471" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.384" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="45.549" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.671" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="24.019" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="45.120" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="26">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
297.500 302.500 305.000 307.500 307.500 310.000 312.500 312.500 315.000 319.375 323.750 328.125 332.500 333.750 335.000 336.667 338.333 340.000 355.000 357.500 360.000 362.500 370.850 383.443 404.612 447.643
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 75 0 90 90 81 78 99 102 72 78 75 72 0 81 75 81 105 102 81 84 84 84 69 72 66
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="582">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.13 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.26 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.39 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 303.187 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0
</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 0.35265058 0.35186794 0.35086685 0.3497987 0.34844553 0.34695965 0.34527335 0.34346452 0.341398 0.33915415 0.33674204 0.3341047 0.33132175 0.32827595 0.32498765 0.3215395 0.3178304 0.3138893 0.30969074 0.3052185 0.30051756 0.2955604 0.29019445 0.28460133 0.2786115 0.2723548 0.26560688 0.25852725 0.25095412 0.2429428 0.23434585 0.2251892 0.21539886 0.20496252 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 0.2 0.20306921 0.2072168 0.21136439 0.21551198 0.21965958 0.22380717 0.22795476 0.23210235 0.23624994 0.24039753 0.24454512 0.2486927 0.25284028 0.25698787 0.26113546 0.26528305 0.26943064 0.27357823 0.27772582 0.2818734 0.286021 0.29016858 0.29431617 0.29846376 0.30261135 0.30675894 0.31090656 0.31505415 0.31920174 0.32334933 0.32749692 0.3316445 0.3357921 0.33993968 0.34408727 0.34823486 0.35238245 0.354 0.3650897 0.38428402 0.40475297 0.42650226 0.44952613 0.47380757 0.4993188 0.52603346 0.5539207 0.58294517 0.6130879 0.6443165 0.67661977 0.7099677 0.7443506 0.7797675 0.8162034 0.85367274 0.892154 0.9316751 0.97221714 1.0137985 1.0564213 1.1000925 1.1448128 1.190586 1.237418 1.2852982 1.3342354 1.3842026 1.4352083 1.4872165 1.5402076 1.5941678 1.6490476 1.7047961 1.7613744 1.8187312 1.8767895 1.9354757 1.9947054 2.0544086 2.1144538 2.1747732 2.2352288 2.2957091 2.356113 2.4162986 2.476138 2.535513 2.5942962 2.6523457 2.70956 2.7657971 2.8209524 2.8748984 2.9275484 2.9787803 3.0285068 3.076646 3.1231008 3.1678104 3.210693 3.25169 3.2907436 3.327813 3.362839 3.395781 3.426609 3.4552948 3.4818034 3.5061138 3.5282018 3.548056 3.5656552 3.5809913 3.5940483 3.604824 3.6133063 3.6194913 3.623377 3.6249597 3.625 3.6245973 3.623015 3.6202638 3.6163769 3.6113865 3.605326 3.5982282 3.5901263 3.581053 3.5710413 3.5601237 3.5483327 3.5357003 3.5222585 3.5080385 3.4930713 3.477388 3.461018 3.443992 3.4263384 3.4080863 3.3892636 3.369898 3.3500166 3.3296459 3.3088114 3.2875388 3.2658525 3.2437766 3.2213347 3.1985493 3.175443 3.1520371 3.1283529 3.1044104 3.0802298 3.05583 3.0312295 3.0064468 2.9814987 2.9564028 2.9311745 2.9058304 2.8803852 2.8548536 2.82925 2.8035877 2.7778802 2.7521396 2.7263784 2.7006083 2.6748405 2.6490853 2.6233535 2.5976548 2.5719988 2.5463943 2.52085 2.4953744 2.4699752 2.44466 2.4194357 2.3943098 2.369288 2.344377 2.3195825 2.29491 2.2703648 2.245952 2.2216759 2.1975415 2.1735528 2.1497133 2.1260273 2.1024978 2.0791283 2.0559218 2.032881 2.0100086 1.9873071 1.9647785 1.942425 1.9202485 1.8982506 1.876433 1.8547971 1.8333441 1.8120751 1.7909912 1.7700932 1.7493818 1.7288575 1.7085211 1.6883729 1.6684129 1.6486417 1.6290591 1.6096653 1.5904601 1.5714433 1.5526148 1.5339743 1.5155212 1.4972552 1.4791757 1.4612821 1.443574 1.4260504 1.4087107 1.391554 1.3745797 1.3577865 1.3411739 1.3247408 1.308486 1.2924086 1.2765075 1.2607816 1.2452298 1.229851 1.2146438 1.1996073 1.1847398 1.1700406 1.155508 1.141141 1.1269382 1.1128982 1.0990199 1.0853016 1.0717423 1.0583404 1.0450946 1.0320036 1.019066 1.0062804 0.99364537 0.9811595 0.96882147 0.9566298 0.94458324 0.9326802 0.92091936 0.9092994 0.8978188 0.8864762 0.8752703 0.86419964 0.8532628 0.8424584 0.83178514 0.8212416 0.8108264 0.80053824 0.79037577 0.7803376 0.7704223 0.7606287 0.7509554 0.7414011 0.73196447 0.7226442 0.71343905 0.7043477 0.69536895 0.6865014 0.67774385 0.6690951 0.6605539 0.652119 0.6437891 0.6355632 0.62743986 0.6194181 0.61149657 0.60367423 0.5959499 0.58832234 0.5807905 0.5733533 0.56600946 0.558758 0.55159783 0.5445278 0.5375469 0.530654 0.52384806 0.5171281 0.51049304 0.50394183 0.49747348 0.49108702 0.4847814 0.4785557 0.47240892 0.4663401 0.46034825 0.45443252 0.4485919 0.4428255 0.43713242 0.43151173 0.42596257 0.42048404 0.41507524 0.40973538 0.40446356 0.39925897 0.39412072 0.38904804 0.3840401 0.37909606 0.3742152 0.36939666 0.3646397 0.35994354 0.35530743 0.3507306 0.34621233 0.34175187 0.33734852 0.33300152 0.3287102 0.32447386 0.3202918 0.3161633 0.31208774 0.30806443 0.3040927 0.30017194 0.29630145 0.29248065 0.28870887 0.28498548 0.28130993 0.27768156 0.2740998 0.27056402 0.2670737 0.2636282 0.260227 0.2568695 0.25355515 0.25028345 0.24705379 0.24386565 0.24071854 0.2376119 0.23454525 0.23151803 0.22852978 0.22557999 0.22266817 0.21979383 0.21695648 0.21415567 0.21139093 0.2086618 0.2059678 0.20330852 0.20068349 0.19809227 0.19553444 0.19300957 0.19051723 0.188057 0.18562849 0.18323128 0.18086497 0.17852917 0.17622347 0.17394751 0.17170088 0.16948323 0.16729417 0.16513336 0.16300039 0.16089495 0.15881665 0.15676518 0.15474015 0.15274125 0.15076815 0.1488205 0.14689797 0.14500026 0.14312702 0.14127797 0.13945279 0.13765115 0.13587275 0.13411732 0.13238454 0.13067412 0.12898579 0.12731925 0.12567422 0.12405042 0.12244759 0.12086546 0.11930374 0.11776219 0.116240546 0.11473855 0.11325595 0.11179248 0.11034792 0.10892201 0.107514516 0.1061252 0.10475382 0.103400156 0.10206397 0.10074504 0.099443145 0.09815807 0.096889585 0.095637485 0.09440156 0.0931816 0.0919774 0.09078875 0.08961546 0.08845732 0.087314144 0.08618574 0.0850719 0.08397246 0.08288722 0.081816 0.08075862 0.0797149 0.078684665 0.077667736 0.07666395 0.07567313 0.07469512 0.07372973 0.072776824 0.07183623 0.07090779 0.06999134 0.06908674 0.06819382 0.06731244 0.06644245 0.065583706 0.06473605 0.06389935 0.063073464 0.06225825 0.06145357 0.06065929 0.05987527 0.05910138 0.058337495 0.05758348 0.05683921 0.056104556 0.055379394 0.054663606 0.053957067 0.053259663 0.052571267 0.05189177 0.05122105 0.050559003

</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="303.187" Num="5" zHalfNm="271.471" Error="1.22">
-82.146 1.208 -1.214 0.674 -0.319
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" 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="6517.13" A="-1.10321254E11" B="3.4049772E7" C="-2627.1719" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.13" EndDistance="6554.26" A="0.0" B="41.61978" C="0.033649966" Error="9.04E-4"/>
<QuasiParabolic ID="3" StartDistance="6554.26" EndDistance="6555.0" A="-3.28982174E12" B="1.00371533E9" C="-76557.63" Error="3.64E-10"/>
<QuasiParabolic ID="4" StartDistance="6555.0" EndDistance="6561.0" A="1.68326513E11" B="-5.1402404E7" C="3924.2678" Error="0.0196"/>
<QuasiParabolic ID="5" StartDistance="6561.0" EndDistance="6590.0" A="1.8475348E10" B="-5723037.0" C="443.13943" Error="0.0151"/>
<QuasiParabolic ID="6" StartDistance="6590.0" EndDistance="6593.0" A="3.97387209E12" B="-1.20614694E9" C="91522.34" Error="0.01"/>
<QuasiParabolic ID="7" StartDistance="6593.0" EndDistance="6598.0" A="1.85679059E12" B="-5.6392595E8" C="42817.582" Error="0.00105"/>
<QuasiParabolic ID="8" StartDistance="6598.0" EndDistance="6612.0" A="3.36602569E12" B="-1.02140851E9" C="77485.86" Error="0.0153"/>
<QuasiParabolic ID="9" StartDistance="6612.0" EndDistance="6646.0" A="7.459242E12" B="-2.25952589E9" C="171112.4" Error="0.0128"/>
<QuasiParabolic ID="10" StartDistance="6646.0" EndDistance="6661.0" A="-8.7986631E12" B="2.63301248E9" C="-196969.03" Error="0.00386"/>
<QuasiParabolic ID="11" StartDistance="6661.0" EndDistance="6673.187" A="-1.61068194E13" B="4.8273244E9" C="-361682.44" Error="7.7E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.39" Depth="0.154"/>
<TopsideChapman PeakHeight="303.187" PeakDensity="163035.05" PeakScaleHeight="24.019" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
