<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-09 -099 04:45:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.09 (099) 04:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609904090445001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.055" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.553" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="2.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="383.440" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="317.487" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="279.661" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.387" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="53.913" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.180" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.946" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="56.090" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.830" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 357.500 360.000 362.912 366.137 369.727 373.749 378.285 383.440 389.351 396.197 404.219 413.749
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 69 69 0 66 69 69 69 0 0 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="634">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.05167 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.10333 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.155 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 317.487 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0 671.0 672.0 673.0 674.0 675.0 676.0 677.0 678.0 679.0 680.0 681.0 682.0 683.0 684.0 685.0 686.0 687.0 688.0 689.0 690.0 691.0 692.0 693.0 694.0 695.0 696.0 697.0 698.0 699.0 700.0 701.0 702.0 703.0 704.0 705.0 706.0 707.0 708.0 709.0 710.0 711.0 712.0 713.0 714.0 715.0 716.0 717.0 718.0 719.0 720.0 721.0 722.0
</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 0.34972504 0.34844565 0.34695974 0.34527344 0.34339368 0.3413282 0.33908543 0.33667454 0.33403847 0.33119148 0.3281487 0.32486364 0.32135794 0.3176544 0.31371918 0.30947137 0.30500805 0.30026525 0.2952226 0.28987566 0.2843023 0.27825132 0.27194688 0.26520187 0.25803858 0.250472 0.24233933 0.2336978 0.22451647 0.2147003 0.20410575 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 0.20372687 0.20788322 0.21203959 0.21619594 0.2203523 0.22450866 0.22866502 0.23282138 0.23697774 0.24113409 0.24529044 0.24944681 0.25360316 0.2577595 0.2619159 0.26607224 0.2702286 0.27438495 0.27854133 0.28269768 0.28685403 0.29101038 0.29516676 0.2993231 0.30347946 0.3076358 0.3117922 0.31594855 0.3201049 0.32426125 0.32841763 0.33257398 0.33673033 0.34088668 0.34504303 0.3491994 0.35335577 0.354 0.36893854 0.38621092 0.40330073 0.4203884 0.4375948 0.45501924 0.47274452 0.49082854 0.5093314 0.5283021 0.5477829 0.5678183 0.5884376 0.60967636 0.6315592 0.6541085 0.6773402 0.7012677 0.72590226 0.7512367 0.77726984 0.80399066 0.83138263 0.85942006 0.888076 0.9173226 0.94711643 0.97742486 1.0082004 1.039403 1.0709957 1.1029252 1.1351583 1.1676494 1.2003595 1.2332622 1.266313 1.2994856 1.3327535 1.3660842 1.3994619 1.4328587 1.4662622 1.4996485 1.5330124 1.5663226 1.5995854 1.6327755 1.6658896 1.6989164 1.7318426 1.7646602 1.7973701 1.8299491 1.8623984 1.8947028 1.9268612 1.9588565 1.9906805 2.0223253 2.0537772 2.0850217 2.1160433 2.1468306 2.1773732 2.2076418 2.2376232 2.2672882 2.2966242 2.3256004 2.3541863 2.3823557 2.4100676 2.4372914 2.4639843 2.4901073 2.5156133 2.5404434 2.564555 2.5878854 2.6103733 2.6319559 2.6525664 2.6721294 2.6905794 2.70784 2.7238376 2.7384946 2.7517385 2.7635036 2.7737215 2.7823312 2.7892816 2.7945297 2.7980402 2.7997894 2.8 2.7999082 2.7992077 2.7978306 2.7957933 2.7931116 2.7898016 2.7858794 2.7813616 2.776264 2.770603 2.7643943 2.7576544 2.7503994 2.7426448 2.7344065 2.7257001 2.7165413 2.7069452 2.696927 2.6865017 2.6756845 2.6644893 2.6529307 2.6410232 2.6287806 2.6162164 2.6033442 2.5901773 2.5767288 2.5630112 2.5490372 2.534819 2.5203683 2.5056975 2.4908173 2.4757395 2.460475 2.445034 2.4294276 2.4136655 2.397758 2.3817146 2.3655446 2.3492575 2.332862 2.3163667 2.2997804 2.2831109 2.2663662 2.2495546 2.232683 2.2157588 2.1987891 2.1817808 2.1647406 2.1476746 2.1305892 2.1134906 2.096384 2.0792756 2.0621705 2.0450737 2.0279908 2.0109262 1.9938848 1.976871 1.959889 1.9429432 1.9260374 1.9091756 1.8923615 1.8755985 1.85889 1.8422395 1.8256497 1.809124 1.792665 1.7762755 1.759958 1.7437152 1.7275492 1.7114624 1.6954569 1.6795348 1.6636978 1.647948 1.6322869 1.6167163 1.6012377 1.5858524 1.5705619 1.5553675 1.5402703 1.5252714 1.510372 1.4955729 1.4808751 1.4662794 1.4517865 1.4373971 1.423112 1.4089316 1.3948565 1.380887 1.3670238 1.353267 1.339617 1.3260741 1.3126384 1.2993102 1.2860895 1.2729764 1.259971 1.2470734 1.2342833 1.2216009 1.2090259 1.1965582 1.1841978 1.1719444 1.1597977 1.1477574 1.1358235 1.1239954 1.1122731 1.1006559 1.0891436 1.0777358 1.0664321 1.055232 1.0441352 1.0331411 1.0222493 1.0114594 1.0007704 0.9901824 0.97969455 0.9693063 0.9590171 0.94882643 0.9387337 0.9287383 0.91883963 0.90903705 0.89932996 0.88971776 0.88019985 0.87077546 0.86144406 0.8522049 0.8430575 0.834001 0.82503486 0.81615835 0.80737084 0.79867166 0.7900601 0.78153545 0.7730971 0.76474434 0.7564765 0.74829286 0.7401928 0.7321755 0.7242404 0.71638685 0.708614 0.7009213 0.693308 0.68577343 0.6783169 0.6709378 0.6636353 0.6564089 0.6492578 0.6421814 0.6351789 0.6282498 0.6213934 0.6146089 0.60789573 0.6012533 0.59468085 0.58817774 0.58174336 0.5753771 0.5690782 0.56284606 0.55668014 0.5505797 0.54454416 0.53857285 0.5326652 0.5268206 0.5210384 0.515318 0.50965875 0.50406015 0.4985215 0.4930423 0.48762187 0.4822597 0.47695518 0.4717077 0.46651676 0.46138173 0.45630208 0.45127726 0.44630665 0.4413898 0.43652606 0.43171498 0.42695597 0.4222485 0.41759205 0.41298613 0.40843016 0.40392366 0.3994661 0.395057 0.39069584 0.38638213 0.38211536 0.3778951 0.37372077 0.36959195 0.36550817 0.36146894 0.3574738 0.35352227 0.3496139 0.34574828 0.34192488 0.3381433 0.3344031 0.33070382 0.32704505 0.32342637 0.31984732 0.3163075 0.31280646 0.30934384 0.3059192 0.30253214 0.29918224 0.29586914 0.29259244 0.2893517 0.2861466 0.28297672 0.2798417 0.27674115 0.2736747 0.27064198 0.26764265 0.26467636 0.26174268 0.25884134 0.25597197 0.2531342 0.25032768 0.24755213 0.24480715 0.24209245 0.23940767 0.23675252 0.23412667 0.23152979 0.22896156 0.22642168 0.22390985 0.22142574 0.21896908 0.21653955 0.21413685 0.2117607 0.2094108 0.20708688 0.20478864 0.20251581 0.2002681 0.19804525 0.19584699 0.19367303 0.19152312 0.18939699 0.1872944 0.18521506 0.18315874 0.18112518 0.17911412 0.17712532 0.17515855 0.17321354 0.17129008 0.16938792 0.16750683 0.16564657 0.16380692 0.16198765 0.16018853 0.15840934 0.15664987 0.1549099 0.15318921 0.1514876 0.14980485 0.14814074 0.14649509 0.14486767 0.14325832 0.14166678 0.14009292 0.1385365 0.13699734 0.13547525 0.13397004 0.13248153 0.13100953 0.12955387 0.12811434 0.12669079 0.12528303 0.1238909 0.12251421 0.121152796 0.11980649 0.11847513 0.11715854 0.115856566 0.11456904 0.1132958 0.112036705 0.11079158 0.10956027 0.10834264 0.10713852 0.10594778 0.10477025 0.10360579 0.10245427 0.10131553 0.10018944 0.09907585 0.09797463 0.09688563 0.09580873 0.09474379 0.09369068 0.09264926 0.09161941 0.090601 0.089593895 0.08859798 0.08761313 0.08663922 0.085676126 0.084723726 0.08378191 0.08285056 0.08192956 0.08101878 0.08011813 0.07922748 0.07834672 0.07747576 0.07661447 0.07576274 0.07492049 0.07408759 0.07326394 0.07244945 0.07164401 0.07084752 0.07005987 0.06928099 0.068510756 0.06774908 0.06699587 0.06625103 0.06551447 0.06478609 0.064065814 0.06335354 0.062649176 0.061952643 0.06126385 0.060582716 0.059909154 0.05924307 0.058584396 0.057933044 0.057288926 0.056651972 0.056022096 0.05539922 0.05478327 0.054174162 0.053571828 0.05297619 0.05238717 0.0518047 0.051228706 0.05065911 0.05009585

</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="2.8" PeakHeight="317.487" Num="5" zHalfNm="279.661" Error="1.685">
-93.139 -5.641 3.732 -2.137 0.853
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6517.052" A="-1.10785872E11" B="3.4193168E7" C="-2638.2366" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.052" EndDistance="6554.103" A="0.0" B="571.72455" C="-0.047693066" Error="0.0115"/>
<QuasiParabolic ID="3" StartDistance="6554.103" EndDistance="6590.0" A="2.68372173E10" B="-8265789.0" C="636.4453" Error="0.0115"/>
<QuasiParabolic ID="4" StartDistance="6590.0" EndDistance="6592.0" A="4.26931048E12" B="-1.29581453E9" C="98326.03" Error="0.0138"/>
<QuasiParabolic ID="5" StartDistance="6592.0" EndDistance="6606.0" A="9.5862928E11" B="-2.91360352E8" C="22138.668" Error="0.0161"/>
<QuasiParabolic ID="6" StartDistance="6606.0" EndDistance="6639.0" A="2.51378008E12" B="-7.6219014E8" C="57775.195" Error="0.0041"/>
<QuasiParabolic ID="7" StartDistance="6639.0" EndDistance="6672.0" A="8.0197471E11" B="-2.46508432E8" C="18937.893" Error="0.0175"/>
<QuasiParabolic ID="8" StartDistance="6672.0" EndDistance="6687.487" A="-8.7992335E12" B="2.63155174E9" C="-196744.08" Error="0.00501"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.155" Depth="0.154"/>
<TopsideChapman PeakHeight="317.487" PeakDensity="97270.47" PeakScaleHeight="27.946" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
