<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 04:05:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.17 (107) 04:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610704170405001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.425" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.339" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.437" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.525" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.525" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.775" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="302.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.525" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.525" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="280.200" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="249.754" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.435" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="43.460" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.441" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.635" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.600" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="37">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.525 2.55 2.575 2.6 2.625 2.65 2.675 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 257.500 257.500 257.500 260.000 261.500 263.000 264.500 266.000 267.500 267.500 270.000 270.000 272.500 275.000 276.875 278.750 280.625 282.500 282.500 287.500 290.000 292.500 297.500 300.000 302.500 310.000 315.000 317.500 320.000 326.245 333.366 341.562 351.096 362.326 375.748 392.072
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 72 72 69 0 0 0 0 69 75 72 51 48 54 0 0 0 69 72 81 0 78 78 81 87 105 102 84 81 90 90 87 90 87 87 0
</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 -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="549">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.83333 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 177.66667 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 211.5 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 280.2 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0
</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 0.35354906 0.35306174 0.35235173 0.35142186 0.35027584 0.34891838 0.3472823 0.34552038 0.3434953 0.34128824 0.33877015 0.3360937 0.33313656 0.32991865 0.32646134 0.32272556 0.31874058 0.31447914 0.30992344 0.30501232 0.29980785 0.29430088 0.288361 0.2820187 0.27533066 0.26815805 0.26053688 0.25234902 0.24358158 0.23417579 0.22406323 0.21320657 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 0.20151724 0.20606896 0.21062069 0.21517241 0.21972413 0.22427586 0.22882758 0.2333793 0.23793103 0.24248275 0.24703449 0.2515862 0.25613794 0.26068965 0.26524138 0.2697931 0.27434483 0.27889654 0.28344828 0.288 0.29255173 0.29710343 0.30165517 0.30620688 0.31075862 0.31531036 0.31986207 0.3244138 0.3289655 0.33351725 0.33806896 0.3426207 0.3471724 0.35172415 0.354 0.3634598 0.38429487 0.407859 0.43422723 0.46331418 0.49484673 0.52845234 0.5637498 0.6004072 0.6381842 0.676939 0.71659625 0.7571587 0.7986554 0.84115475 0.8847505 0.9295535 0.97568434 1.023289 1.0725154 1.1235236 1.1764812 1.2315825 1.2890152 1.3489691 1.4116435 1.4771876 1.5457693 1.617485 1.692366 1.7702917 1.8510501 1.9342315 2.0192382 2.1052752 2.1914632 2.2768412 2.3604443 2.441517 2.5193722 2.5935652 2.6638496 2.730074 2.7922435 2.8504446 2.9048088 2.9554896 3.002673 3.0465386 3.0872686 3.1250324 3.1599927 3.1922855 3.2220638 3.2494373 3.274517 3.29741 3.3181949 3.3369627 3.353776 3.3686955 3.3817801 3.393073 3.4026127 3.410434 3.4165614 3.4210176 3.4238162 3.424967 3.425 3.4246194 3.423091 3.4204226 3.4166467 3.4117959 3.4059029 3.3990002 3.391121 3.3822975 3.3725626 3.3619485 3.350487 3.33821 3.3251495 3.3113358 3.2968001 3.2815726 3.2656832 3.2491608 3.2320347 3.214333 3.1960833 3.177313 3.1580486 3.1383162 3.1181412 3.0975482 3.076562 3.0552053 3.0335016 3.0114734 2.9891422 2.9665291 2.9436548 2.920539 2.8972008 2.8736596 2.849933 2.8260384 2.8019931 2.7778134 2.753515 2.729113 2.7046225 2.6800573 2.6554313 2.6307576 2.6060488 2.581317 2.5565739 2.5318308 2.5070984 2.482387 2.4577065 2.4330661 2.4084752 2.3839421 2.3594754 2.3350825 2.3107712 2.2865486 2.2624214 2.238396 2.2144787 2.1906753 2.166991 2.1434312 2.1200008 2.0967047 2.073547 2.0505316 2.0276628 2.004944 1.9823787 1.95997 1.9377209 1.9156342 1.8937122 1.8719574 1.8503721 1.8289582 1.8077173 1.7866515 1.765762 1.7450501 1.7245171 1.7041641 1.6839921 1.6640017 1.6441938 1.6245687 1.605127 1.585869 1.566795 1.5479051 1.5291994 1.5106778 1.4923401 1.4741863 1.456216 1.4384286 1.4208242 1.4034019 1.3861612 1.3691015 1.3522223 1.3355227 1.3190019 1.3026593 1.2864937 1.2705044 1.2546904 1.2390506 1.2235843 1.2082901 1.193167 1.178214 1.1634297 1.1488132 1.1343632 1.1200784 1.1059577 1.0919998 1.0782033 1.0645671 1.0510898 1.03777 1.0246065 1.011598 0.998743 0.98604023 0.97348833 0.96108586 0.94883156 0.93672395 0.9247617 0.9129434 0.9012677 0.8897332 0.87833846 0.8670821 0.8559629 0.8449792 0.8341298 0.8234133 0.8128283 0.80237347 0.7920473 0.7818486 0.77177596 0.761828 0.75200343 0.7423008 0.7327189 0.72325635 0.71391183 0.704684 0.69557166 0.68657345 0.67768806 0.66891426 0.6602508 0.6516963 0.64324963 0.6349096 0.6266748 0.6185441 0.61051637 0.60259026 0.5947647 0.58703846 0.5794104 0.5718793 0.56444407 0.5571035 0.54985654 0.542702 0.5356388 0.5286659 0.52178216 0.51498646 0.5082778 0.5016551 0.49511728 0.48866338 0.48229232 0.4760031 0.46979472 0.4636662 0.4576165 0.45164472 0.44574988 0.439931 0.43418714 0.4285174 0.42292082 0.41739655 0.4119436 0.40656117 0.4012483 0.39600417 0.3908279 0.38571864 0.38067555 0.3756978 0.37078455 0.36593503 0.3611484 0.35642383 0.3517606 0.34715793 0.342615 0.3381311 0.33370546 0.32933733 0.32502598 0.3207707 0.3165708 0.31242552 0.3083342 0.30429614 0.30031067 0.2963771 0.29249474 0.288663 0.28488117 0.28114864 0.27746478 0.27382895 0.27024058 0.266699 0.2632036 0.25975382 0.2563491 0.2529888 0.24967234 0.24639922 0.24316885 0.23998067 0.23683414 0.23372872 0.2306639 0.22763911 0.22465387 0.22170764 0.21879995 0.21593027 0.21309812 0.21030302 0.20754448 0.20482202 0.20213518 0.19948348 0.1968665 0.19428377 0.19173484 0.18921927 0.18673663 0.1842865 0.18186845 0.17948206 0.17712691 0.17480262 0.17250876 0.17024496 0.1680108 0.16580592 0.16362992 0.16148242 0.15936308 0.15727149 0.15520732 0.1531702 0.15115978 0.1491757 0.14721765 0.14528525 0.14337818 0.1414961 0.13963872 0.13780569 0.13599668 0.13421139 0.13244952 0.13071075 0.12899478 0.1273013 0.12563005 0.12398072 0.12235302 0.120746665 0.11916138 0.117596895 0.116052926 0.114529215 0.113025494 0.1115415 0.11007698 0.10863166 0.10720532 0.105797686 0.104408525 0.10303759 0.101684645 0.10034945 0.09903178 0.097731404 0.096448086 0.095181614 0.093931764 0.09269831 0.09148105 0.090279765 0.08909425 0.087924294 0.08676969 0.085630246 0.08450575 0.083396025 0.082300864 0.081220075 0.08015347 0.07910088 0.078062095 0.07703695 0.07602526 0.075026855 0.07404155 0.07306919 0.072109595 0.0711626 0.070228025 0.069305725 0.06839554 0.0674973 0.06661086 0.06573605 0.06487273 0.06402074 0.06317994 0.062350184 0.061531316 0.060723204 0.0599257 0.05913867 0.058361974 0.057595477 0.056839045 0.05609254 0.055355843 0.05462882 0.053911343 0.053203285 0.05250453 0.051814944 0.05113442 0.050462827

</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="3.425" PeakHeight="280.2" Num="5" zHalfNm="249.754" Error="2.745">
-74.658 10.666 -7.1 3.614 -1.222
</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="6513.833" A="-1.32737196E11" B="4.0968268E7" C="-3161.0066" Error="0.00168"/>
<QuasiParabolic ID="2" StartDistance="6513.833" EndDistance="6547.667" A="0.0" B="-62.997402" C="0.049706705" Error="0.00213"/>
<QuasiParabolic ID="3" StartDistance="6547.667" EndDistance="6549.0" A="6.9298448E11" B="-2.11715648E8" C="16170.501" Error="0.00385"/>
<QuasiParabolic ID="4" StartDistance="6549.0" EndDistance="6581.0" A="3.36049848E10" B="-1.0347651E7" C="796.55084" Error="0.00956"/>
<QuasiParabolic ID="5" StartDistance="6581.0" EndDistance="6582.0" A="9.3494108E12" B="-2.84146944E9" C="215894.7" Error="2.35E-10"/>
<QuasiParabolic ID="6" StartDistance="6582.0" EndDistance="6595.0" A="3.74985143E12" B="-1.1399927E9" C="86642.44" Error="0.00988"/>
<QuasiParabolic ID="7" StartDistance="6595.0" EndDistance="6604.0" A="6.9452552E12" B="-2.10903104E9" C="160110.1" Error="0.00619"/>
<QuasiParabolic ID="8" StartDistance="6604.0" EndDistance="6619.0" A="1.7897372E13" B="-5.4258442E9" C="411231.6" Error="0.00796"/>
<QuasiParabolic ID="9" StartDistance="6619.0" EndDistance="6642.0" A="-1.32396949E13" B="3.98254592E9" C="-299479.22" Error="0.00397"/>
<QuasiParabolic ID="10" StartDistance="6642.0" EndDistance="6650.2" A="-1.1078132E13" B="3.33166874E9" C="-250482.16" Error="6.16E-5"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="101.5" Depth="0.154"/>
<TopsideChapman PeakHeight="280.2" PeakDensity="145541.25" PeakScaleHeight="23.635" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
