<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-17 -137 23:40:00.000"
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" >
2026.05.17 (137) 23:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202613705172340001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="2.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.158" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.237" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.825" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.825" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.225" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="361.469" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="361.469" 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="88" Val="2.825" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="361.469" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.825" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.825" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="310.002" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.867" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.052" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="54.498" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.307" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="28.702" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="54.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.070" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="5">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.825 2.85 2.875 2.9 2.925
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
361.469 375.000 395.000 432.500 503.933
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="641">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 145.27434 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 180.54866 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 215.823 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 310.002 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0 671.0 672.0 673.0 674.0 675.0 676.0 677.0 678.0 679.0 680.0 681.0 682.0 683.0 684.0 685.0 686.0 687.0 688.0 689.0 690.0 691.0 692.0 693.0 694.0 695.0 696.0 697.0 698.0 699.0 700.0 701.0 702.0 703.0 704.0 705.0 706.0 707.0 708.0 709.0 710.0 711.0 712.0 713.0 714.0 715.0 716.0 717.0 718.0 719.0 720.0 721.0 722.0 723.0 724.0 725.0 726.0 727.0 728.0 729.0
</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 0.35313663 0.35250106 0.35164472 0.35057107 0.34928447 0.34786305 0.34623858 0.34434634 0.34226713 0.34000945 0.3375142 0.33486193 0.3319316 0.3287428 0.32537964 0.32173702 0.3178436 0.3136719 0.3092038 0.3044848 0.29951054 0.29411715 0.2884646 0.28246042 0.27605847 0.26918796 0.26195836 0.25424382 0.24595362 0.23711292 0.22765349 0.21752648 0.20667513 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 0.20197043 0.2063362 0.21070199 0.21506776 0.21943355 0.22379932 0.2281651 0.23253089 0.23689666 0.24126245 0.24562822 0.24999401 0.25435978 0.25872558 0.26309136 0.26745713 0.2718229 0.2761887 0.28055447 0.28492025 0.28928605 0.29365182 0.2980176 0.30238336 0.30674917 0.31111494 0.3154807 0.3198465 0.32421228 0.32857805 0.33294383 0.33730963 0.3416754 0.34604117 0.35040697 0.354 0.3568393 0.37319008 0.39007437 0.40749967 0.42547742 0.44401807 0.46312627 0.48281515 0.5030919 0.5239578 0.5454271 0.5674986 0.5901794 0.6134702 0.63737965 0.66191006 0.687058 0.71282285 0.73921096 0.76621395 0.79383045 0.822057 0.8508884 0.88031745 0.91033906 0.94094205 0.97210944 1.0038451 1.0361277 1.0689415 1.1022825 1.1361164 1.1704414 1.2052321 1.2404746 1.2761322 1.3121988 1.3486452 1.3854407 1.4225695 1.459995 1.4976897 1.5356288 1.5737838 1.6121125 1.650596 1.6891863 1.7278527 1.7665696 1.8052894 1.8439794 1.8825943 1.9211103 1.9594746 1.9976546 2.0356123 2.073299 2.1106753 2.1477098 2.184347 2.2205513 2.256281 2.2914944 2.3261538 2.36021 2.393622 2.4263546 2.4583645 2.4896083 2.520049 2.549653 2.5783756 2.606175 2.6330242 2.6588821 2.683717 2.7074933 2.7301812 2.7517452 2.7721596 2.7913952 2.809427 2.8262262 2.8417711 2.8560405 2.8690126 2.8806703 2.8909965 2.8999767 2.907598 2.9138477 2.91872 2.922205 2.9242995 2.9249945 2.925 2.924657 2.923636 2.9219518 2.91962 2.9166563 2.913076 2.9088948 2.904128 2.898792 2.8929017 2.8864727 2.8795207 2.872061 2.864109 2.8556798 2.8467884 2.8374498 2.827679 2.81749 2.8068979 2.7959166 2.7845602 2.772843 2.7607782 2.7483795 2.73566 2.722633 2.709311 2.6957068 2.681833 2.6677012 2.6533237 2.6387117 2.6238773 2.608831 2.593584 2.578147 2.5625305 2.5467446 2.5307992 2.514704 2.4984686 2.4821022 2.4656138 2.4490123 2.4323058 2.415503 2.398612 2.3816407 2.3645964 2.3474867 2.330319 2.3130999 2.2958362 2.278535 2.261202 2.2438438 2.2264664 2.2090752 2.1916764 2.1742747 2.1568758 2.1394846 2.122106 2.104745 2.0874054 2.0700922 2.0528095 2.0355613 2.0183513 2.0011837 1.9840618 1.9669892 1.9499692 1.9330049 1.9160994 1.8992558 1.8824768 1.865765 1.8491231 1.8325536 1.8160588 1.7996408 1.7833018 1.7670441 1.7508692 1.7347791 1.7187757 1.7028605 1.6870351 1.6713009 1.6556592 1.6401116 1.6246591 1.609303 1.5940442 1.5788838 1.5638227 1.5488619 1.534002 1.5192438 1.5045882 1.4900355 1.4755865 1.4612416 1.4470013 1.432866 1.418836 1.4049118 1.3910934 1.3773811 1.3637753 1.3502758 1.336883 1.3235966 1.310417 1.2973441 1.2843777 1.2715178 1.2587643 1.246117 1.2335759 1.2211406 1.208811 1.196587 1.1844679 1.1724538 1.1605442 1.1487387 1.1370372 1.1254392 1.113944 1.1025517 1.0912615 1.0800731 1.068986 1.0579998 1.0471139 1.0363278 1.0256411 1.015053 1.0045633 0.9941713 0.9838764 0.9736781 0.9635758 0.9535688 0.94365674 0.93383884 0.9241145 0.91448325 0.9049443 0.89549714 0.88614106 0.87687546 0.86769974 0.8586132 0.8496152 0.8407051 0.8318823 0.8231461 0.8144958 0.80593085 0.7974505 0.7890541 0.78074104 0.77251065 0.7643622 0.7562951 0.74830866 0.7404022 0.7325752 0.72482675 0.71715635 0.7095634 0.70204705 0.6946068 0.687242 0.67995185 0.6727358 0.66559327 0.6585235 0.6515259 0.6445998 0.6377446 0.63095963 0.6242443 0.6175979 0.61101985 0.60450953 0.5980663 0.5916896 0.5853787 0.5791331 0.57295215 0.5668352 0.5607818 0.55479115 0.54886276 0.54299605 0.53719044 0.53144526 0.52576 0.5201341 0.51456696 0.509058 0.50360674 0.4982125 0.49287477 0.487593 0.48236668 0.4771952 0.47207808 0.46701476 0.46200472 0.4570474 0.45214233 0.44728893 0.44248673 0.4377352 0.43303385 0.42838216 0.42377967 0.4192258 0.41472015 0.4102622 0.40585148 0.40148747 0.39716974 0.3928978 0.38867122 0.3844895 0.3803522 0.37625885 0.372209 0.36820224 0.36423808 0.36031613 0.35643592 0.35259706 0.34879908 0.34504157 0.34132415 0.33764637 0.33400783 0.33040813 0.32684684 0.32332358 0.31983796 0.3163896 0.3129781 0.30960304 0.3062641 0.30296087 0.299693 0.2964601 0.2932618 0.29009774 0.2869676 0.283871 0.28080755 0.27777696 0.27477884 0.2718129 0.26887873 0.26597607 0.26310453 0.26026383 0.25745362 0.25467357 0.25192338 0.24920273 0.2465113 0.24384879 0.24121487 0.23860928 0.2360317 0.23348182 0.23095936 0.22846404 0.22599554 0.22355361 0.22113794 0.21874827 0.21638432 0.21404582 0.21173248 0.20944406 0.20718026 0.20494086 0.20272557 0.20053414 0.19836631 0.19622186 0.1941005 0.192002 0.18992612 0.1878726 0.18584123 0.18383177 0.18184397 0.1798776 0.17793241 0.17600822 0.1741048 0.17222188 0.1703593 0.1685168 0.16669418 0.16489121 0.16310772 0.16134347 0.15959826 0.15787187 0.15616414 0.15447484 0.15280376 0.15115073 0.14951555 0.14789803 0.14629798 0.14471519 0.14314951 0.14160073 0.14006868 0.13855319 0.13705406 0.13557112 0.1341042 0.13265313 0.13121775 0.12979788 0.12839334 0.12700397 0.12562962 0.124270126 0.122925326 0.121595055 0.12027916 0.1189775 0.1176899 0.11641622 0.11515631 0.11391002 0.1126772 0.111457705 0.110251404 0.10905814 0.107877776 0.10671018 0.10555521 0.10441272 0.103282586 0.10216468 0.101058856 0.099965 0.098882966 0.09781264 0.09675388 0.09570658 0.0946706 0.09364583 0.09263215 0.09162943 0.09063756 0.08965641 0.08868588 0.08772585 0.086776204 0.08583683 0.08490762 0.083988465 0.08307925 0.082179874 0.08129023 0.080410205 0.07953971 0.07867863 0.077826865 0.076984316 0.07615089 0.07532648 0.074510984 0.07370432 0.07290638 0.072117075 0.071336314 0.070564 0.06980005 0.06904437 0.06829686 0.06755743 0.066826016 0.06610252 0.06538685 0.06467892 0.06397866 0.06328597 0.062600784 0.061923012 0.061252575 0.060589395 0.059933394 0.059284493 0.058642615 0.058007687 0.05737963 0.05675837 0.056143835 0.05553595 0.054934647 0.054339856 0.0537515 0.05316951 0.052593824 0.05202437 0.05146108 0.050903883 0.050352722

</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="2.925" PeakHeight="310.002" Num="5" zHalfNm="271.867" Error="0.521">
-94.155 -0.044 0.007 0.002 0.011
</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="6515.274" A="-1.22170155E11" B="3.770684E7" C="-2909.353" Error="0.00172"/>
<QuasiParabolic ID="2" StartDistance="6515.274" EndDistance="6550.549" A="0.0" B="-136.783" C="0.061027862" Error="0.00367"/>
<QuasiParabolic ID="3" StartDistance="6550.549" EndDistance="6581.0" A="3.8364848E10" B="-1.1786472E7" C="905.2672" Error="0.00367"/>
<QuasiParabolic ID="4" StartDistance="6581.0" EndDistance="6582.0" A="-1.23988594E12" B="3.76680576E8" C="-28609.02" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6582.0" EndDistance="6600.0" A="1.49063179E12" B="-4.5301184E8" C="34418.36" Error="0.0388"/>
<QuasiParabolic ID="6" StartDistance="6600.0" EndDistance="6652.0" A="2.78317236E12" B="-8.4469082E8" C="64091.01" Error="0.0288"/>
<QuasiParabolic ID="7" StartDistance="6652.0" EndDistance="6671.0" A="-5.4563916E12" B="1.63262848E9" C="-122117.59" Error="0.00659"/>
<QuasiParabolic ID="8" StartDistance="6671.0" EndDistance="6680.002" A="-7.9840165E12" B="2.3904233E9" C="-178915.3" Error="1.73E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.823" Depth="0.154"/>
<TopsideChapman PeakHeight="310.002" PeakDensity="106149.195" PeakScaleHeight="28.702" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
