<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 02:45:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 02:45:00</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">
FF202611904290245001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.075" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.147" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.676" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.382" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.382" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.875" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="345.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="313.001" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="274.803" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.713" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="54.618" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.455" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="29.253" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="52.290" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.540" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.382 317.500 322.500 325.000 330.000 335.000 340.000 345.000 352.500 362.500 372.500 387.500 405.000 427.500 460.000 508.799
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 1.5625 10.9375 -7.8125 -1.5625 -1.5625 -1.5625 -4.6875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="657">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.44034 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.88066 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 222.321 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 313.001 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0 671.0 672.0 673.0 674.0 675.0 676.0 677.0 678.0 679.0 680.0 681.0 682.0 683.0 684.0 685.0 686.0 687.0 688.0 689.0 690.0 691.0 692.0 693.0 694.0 695.0 696.0 697.0 698.0 699.0 700.0 701.0 702.0 703.0 704.0 705.0 706.0 707.0 708.0 709.0 710.0 711.0 712.0 713.0 714.0 715.0 716.0 717.0 718.0 719.0 720.0 721.0 722.0 723.0 724.0 725.0 726.0 727.0 728.0 729.0 730.0 731.0 732.0 733.0 734.0 735.0 736.0 737.0 738.0 739.0 740.0 741.0 742.0 743.0 744.0 745.0
</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 0.35369936 0.35321155 0.35265046 0.35186782 0.3509409 0.34987223 0.3485184 0.34710428 0.34541634 0.34360573 0.3416073 0.33942926 0.33701238 0.3344367 0.33171254 0.328722 0.32548508 0.3220845 0.318478 0.31457308 0.3104612 0.30611935 0.3014818 0.2965762 0.29134184 0.28585598 0.28002885 0.2738938 0.26736316 0.26042292 0.25301757 0.24517366 0.23683594 0.2279507 0.21842454 0.20824066 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 0.20049085 0.20460406 0.20871727 0.21283048 0.21694368 0.2210569 0.2251701 0.22928332 0.23339653 0.23750974 0.24162295 0.24573617 0.24984938 0.25396258 0.2580758 0.262189 0.26630223 0.27041543 0.27452865 0.27864185 0.28275508 0.28686827 0.2909815 0.2950947 0.29920793 0.30332112 0.30743435 0.31154755 0.31566074 0.31977397 0.32388717 0.3280004 0.3321136 0.33622682 0.34034002 0.34445325 0.34856644 0.35267967 0.354 0.3649403 0.3819309 0.39995018 0.41894585 0.438868 0.4596488 0.48122606 0.5035381 0.5265361 0.55016935 0.5744021 0.5992179 0.62458545 0.6505063 0.6769761 0.7039939 0.7315666 0.75970364 0.7884258 0.81775117 0.84769064 0.8782696 0.9095139 0.9414414 0.97408646 1.0074623 1.0415972 1.0765184 1.1122503 1.1488107 1.1862185 1.224485 1.263635 1.3036705 1.3445982 1.3864087 1.4291027 1.472651 1.5170276 1.5622078 1.6081206 1.6547104 1.7019118 1.7496345 1.7977765 1.8462355 1.8948904 1.9436084 1.992266 2.0407228 2.0888414 2.1364973 2.1835542 2.2298906 2.2753983 2.3199685 2.3635116 2.4059439 2.4471984 2.4872217 2.5259578 2.5633726 2.59944 2.6341405 2.6674592 2.6993916 2.7299397 2.7590983 2.7868729 2.8132825 2.8383296 2.8620343 2.8844044 2.9054601 2.9252143 2.9436815 2.960878 2.9768183 2.991515 3.004985 3.0172367 3.0282876 3.0381439 3.046818 3.0543177 3.0606496 3.0658216 3.0698395 3.072707 3.0744262 3.074991 3.075 3.0746522 3.0736177 3.0719118 3.0695496 3.0665462 3.0629177 3.058679 3.0538464 3.0484345 3.0424592 3.0359359 3.0288801 3.021307 3.0132318 3.0046694 2.9956353 2.9861438 2.97621 2.9658484 2.9550736 2.9438994 2.9323401 2.9204097 2.9081216 2.8954895 2.8825264 2.8692455 2.85566 2.8417819 2.8276238 2.8131983 2.7985168 2.7835913 2.7684329 2.7530534 2.7374635 2.7216737 2.7056952 2.6895378 2.6732116 2.6567264 2.6400921 2.6233177 2.6064126 2.5893855 2.5722451 2.555 2.5376582 2.520228 2.5027168 2.4851325 2.467482 2.449773 2.4320123 2.4142063 2.3963618 2.3784852 2.3605826 2.3426597 2.3247225 2.3067765 2.2888272 2.2708797 2.2529392 2.2350104 2.217098 2.1992066 2.1813405 2.1635041 2.1457016 2.1279366 2.110213 2.0925345 2.0749044 2.0573263 2.0398035 2.0223386 2.0049353 1.9875958 1.9703232 1.9531199 1.9359887 1.9189316 1.9019512 1.8850495 1.8682286 1.8514905 1.8348372 1.8182703 1.8017915 1.7854025 1.769105 1.7529 1.7367891 1.7207736 1.7048546 1.6890334 1.6733109 1.6576881 1.642166 1.6267453 1.6114271 1.5962118 1.5811001 1.5660928 1.5511905 1.5363934 1.5217023 1.5071174 1.4926391 1.4782677 1.4640034 1.4498465 1.4357973 1.4218558 1.4080222 1.3942963 1.3806785 1.3671685 1.3537666 1.3404722 1.3272858 1.3142068 1.3012353 1.2883711 1.2756138 1.2629634 1.2504195 1.2379818 1.2256501 1.213424 1.201303 1.1892871 1.1773757 1.1655684 1.1538647 1.1422642 1.1307667 1.1193714 1.108078 1.096886 1.0857948 1.0748041 1.063913 1.0531212 1.0424283 1.0318334 1.0213361 1.0109359 1.000632 0.99042416 0.98031145 0.9702934 0.9603694 0.9505388 0.940801 0.9311554 0.9216013 0.91213816 0.9027653 0.893482 0.8842877 0.8751818 0.86616355 0.8572324 0.8483876 0.8396285 0.8309545 0.8223649 0.81385916 0.8054365 0.79709625 0.7888378 0.7806605 0.7725637 0.76454675 0.75660896 0.7487497 0.7409682 0.733264 0.7256364 0.7180847 0.71060824 0.7032064 0.69587857 0.688624 0.68144226 0.6743325 0.6672942 0.6603267 0.6534294 0.6466016 0.6398428 0.6331523 0.62652946 0.6199737 0.61348444 0.60706097 0.6007028 0.59440935 0.58817995 0.58201396 0.57591087 0.5698701 0.56389105 0.55797315 0.55211574 0.54631835 0.54058045 0.5349013 0.52928054 0.5237175 0.51821166 0.5127625 0.5073694 0.50203186 0.49674937 0.49152136 0.48634732 0.4812267 0.47615907 0.4711438 0.46618044 0.46126845 0.45640737 0.45159668 0.44683588 0.44212446 0.43746197 0.4328479 0.42828178 0.42376313 0.4192915 0.41486636 0.41048732 0.4061539 0.40186563 0.39762205 0.39342272 0.3892672 0.38515508 0.38108587 0.37705916 0.37307456 0.36913157 0.36522982 0.3613689 0.35754836 0.3537678 0.35002685 0.34632504 0.34266204 0.33903742 0.3354508 0.3319018 0.32839 0.32491508 0.3214766 0.31807423 0.31470758 0.31137627 0.30808 0.30481833 0.30159095 0.2983975 0.29523763 0.292111 0.28901726 0.28595608 0.2829271 0.27993003 0.2769645 0.27403018 0.27112678 0.26825398 0.26541144 0.26259884 0.2598159 0.25706232 0.25433776 0.25164193 0.24897452 0.24633525 0.24372384 0.24113998 0.23858339 0.2360538 0.23355089 0.23107442 0.22862409 0.22619966 0.22380081 0.22142732 0.2190789 0.2167553 0.21445625 0.2121815 0.20993079 0.20770387 0.2055005 0.20332043 0.20116341 0.1990292 0.19691758 0.19482827 0.19276108 0.19071576 0.18869208 0.18668981 0.18470873 0.18274862 0.18080924 0.1788904 0.1769919 0.17511347 0.17325494 0.17141607 0.16959669 0.16779658 0.16601554 0.16425334 0.16250983 0.16078478 0.159078 0.1573893 0.1557185 0.1540654 0.15242983 0.15081158 0.14921048 0.14762636 0.146059 0.14450829 0.142974 0.14145598 0.13995405 0.13846803 0.13699777 0.13554311 0.13410388 0.1326799 0.13127102 0.12987708 0.12849791 0.12713338 0.12578332 0.124447584 0.123126015 0.12181846 0.12052478 0.11924482 0.11797844 0.11672549 0.11548583 0.11425933 0.11304584 0.111845225 0.11065735 0.10948207 0.108319275 0.10716881 0.10603055 0.10490438 0.10379016 0.10268776 0.101597056 0.100517936 0.09945027 0.098393925 0.097348794 0.096314766 0.095291704 0.094279505 0.09327805 0.09228723 0.09130692 0.09033702 0.08937742 0.088428 0.08748866 0.086559296 0.0856398 0.08473006 0.083829984 0.08293946 0.08205839 0.08118668 0.080324225 0.07947093 0.07862669 0.077791415 0.07696501 0.07614738 0.07533843 0.074538074 0.07374622 0.07296277 0.07218764 0.07142074 0.070661984 0.069911286 0.06916856 0.068433724 0.06770669 0.06698738 0.06627571 0.06557159 0.064874955 0.064185716 0.0635038 0.06282912 0.062161617 0.061501198 0.06084779 0.060201325 0.059561726 0.05892892 0.05830284 0.0576834 0.05707055 0.056464203 0.055864297 0.055270765 0.054683536 0.054102547 0.053527728 0.052959017 0.052396346 0.05183965 0.05128887 0.050743937 0.050204795

</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="3.075" PeakHeight="313.001" Num="5" zHalfNm="274.803" Error="3.176">
-94.108 6.172 -4.388 2.364 -0.72
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" 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="6517.44" A="-1.08508209E11" B="3.3490188E7" C="-2583.9941" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.44" EndDistance="6554.881" A="0.0" B="-730.9287" C="0.15218902" Error="0.017"/>
<QuasiParabolic ID="3" StartDistance="6554.881" EndDistance="6585.0" A="4.3539534E10" B="-1.3346168E7" C="1022.76874" Error="0.017"/>
<QuasiParabolic ID="4" StartDistance="6585.0" EndDistance="6591.0" A="-3.694991E10" B="1.1100132E7" C="-833.4424" Error="0.00182"/>
<QuasiParabolic ID="5" StartDistance="6591.0" EndDistance="6595.0" A="3.29983643E12" B="-1.0014279E9" C="75977.97" Error="0.00944"/>
<QuasiParabolic ID="6" StartDistance="6595.0" EndDistance="6599.0" A="8.2965987E11" B="-2.52322096E8" C="19184.506" Error="0.00785"/>
<QuasiParabolic ID="7" StartDistance="6599.0" EndDistance="6614.0" A="1.98042583E12" B="-6.010919E8" C="45610.465" Error="0.00366"/>
<QuasiParabolic ID="8" StartDistance="6614.0" EndDistance="6650.0" A="4.6954903E12" B="-1.42209715E9" C="107676.18" Error="0.019"/>
<QuasiParabolic ID="9" StartDistance="6650.0" EndDistance="6677.0" A="-6.6059926E12" B="1.97684493E9" C="-147883.38" Error="0.00848"/>
<QuasiParabolic ID="10" StartDistance="6677.0" EndDistance="6683.001" A="-7.0109191E12" B="2.09813491E9" C="-156966.05" Error="3.74E-6"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="112.321" Depth="0.154"/>
<TopsideChapman PeakHeight="313.001" PeakDensity="117315.445" PeakScaleHeight="29.253" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
