<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 04:35:00.000"
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" >
2026.04.15 (105) 04:35:00</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">
FF202610504150435001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.875" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.643" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.475" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.125" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.775" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="282.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.125" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.125" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="246.095" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="224.357" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.393" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.054" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.733" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.829" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.080" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475 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 2.825 2.85 2.875
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 235.833 236.667 237.500 238.750 240.000 240.000 241.250 242.500 242.500 245.000 245.000 247.500 250.000 250.000 251.250 252.500 252.500 257.500 260.000 262.500 262.500 265.000 270.000 275.000 280.000 282.500 290.000 300.771 316.222 340.252
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 0 0 72 0 75 63 0 60 60 69 72 84 81 69 0 72 69 69 0 69 72 78 0 0 69 72 69 45 0 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 4.6875 -1.5625 -1.5625 -1.5625 1.5625 -1.5625 1.5625 -1.5625 1.5625 1.5625 -1.5625 -7.8125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="403">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.16667 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 168.33333 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 197.5 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 246.095 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0
</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 0.35347393 0.352762 0.35175505 0.3505324 0.3489521 0.3470975 0.34497866 0.3425364 0.33978727 0.33674988 0.3333779 0.32963315 0.32561377 0.321167 0.3164043 0.31120363 0.30563802 0.29957724 0.29311055 0.28615454 0.27862445 0.27052397 0.26174292 0.2523066 0.24211602 0.23105234 0.21895285 0.20588575 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 0.20352 0.2088 0.21408 0.21936 0.22464 0.22992 0.2352 0.24048 0.24576 0.25104 0.25632 0.2616 0.26688 0.27216 0.27744 0.28272 0.288 0.29328 0.29856 0.30384 0.30912 0.3144 0.31968 0.32496 0.33024 0.33552 0.3408 0.34608 0.35136 0.354 0.3670645 0.39636827 0.4299485 0.46749952 0.50840455 0.5519639 0.597637 0.6450705 0.694102 0.7447343 0.79707587 0.8512704 0.9075486 0.9661344 1.0273011 1.0913429 1.1585404 1.2291385 1.3033875 1.3814094 1.4632041 1.5485762 1.6370233 1.727771 1.819674 1.9113805 2.0014553 2.0885751 2.1716144 2.2498243 2.3227532 2.3902168 2.4522202 2.5089383 2.5605776 2.6074033 2.6496809 2.687665 2.7216067 2.7517161 2.7781954 2.801209 2.8209088 2.8374162 2.8508334 2.8612454 2.8687139 2.8732858 2.8749933 2.875 2.8741972 2.8714879 2.8669384 2.860624 2.8526216 2.8430066 2.831855 2.8192422 2.8052428 2.7899299 2.7733762 2.755653 2.7368295 2.716974 2.696153 2.6744306 2.65187 2.6285317 2.604475 2.5797565 2.5544314 2.5285523 2.5021703 2.4753342 2.4480908 2.4204853 2.3925605 2.3643572 2.3359149 2.3072708 2.27846 2.249517 2.220473 2.1913588 2.1622028 2.1330323 2.103873 2.0747488 2.0456824 2.0166953 1.9878074 1.9590375 1.9304032 1.9019209 1.8736057 1.845472 1.8175327 1.7898002 1.7622856 1.7349993 1.7079511 1.6811492 1.6546022 1.6283166 1.6022996 1.5765567 1.5510931 1.5259137 1.5010225 1.476423 1.4521185 1.4281116 1.4044042 1.3809983 1.3578953 1.335096 1.3126012 1.2904112 1.2685262 1.2469457 1.2256694 1.2046964 1.1840258 1.1636562 1.1435864 1.1238148 1.1043396 1.0851588 1.0662705 1.0476723 1.029362 1.0113372 0.9935952 0.9761335 0.95894945 0.9420401 0.92540264 0.90903413 0.89293164 0.8770921 0.8615125 0.8461897 0.8311205 0.81630176 0.8017304 0.7874031 0.7733167 0.75946796 0.7458537 0.73247063 0.7193156 0.7063853 0.6936766 0.6811862 0.66891104 0.65684783 0.6449935 0.6333448 0.6218987 0.61065215 0.5996019 0.5887451 0.5780786 0.5675994 0.5573046 0.54719126 0.5372564 0.52749723 0.51791084 0.5084944 0.49924517 0.4901604 0.48123732 0.47247332 0.4638657 0.45541188 0.44710922 0.43895522 0.43094736 0.42308316 0.41536018 0.40777597 0.4003282 0.39301452 0.3858326 0.3787802 0.37185502 0.3650549 0.3583777 0.35182118 0.34538335 0.33906204 0.33285525 0.32676095 0.3207772 0.314902 0.3091335 0.30346975 0.29790893 0.2924492 0.28708878 0.2818259 0.2766588 0.27158582 0.26660523 0.26171544 0.25691476 0.25220165 0.24757451 0.2430318 0.23857202 0.23419365 0.22989526 0.2256754 0.22153264 0.21746561 0.21347293 0.20955326 0.20570529 0.2019277 0.19821925 0.19457868 0.19100472 0.18749623 0.18405196 0.18067078 0.17735155 0.17409311 0.1708944 0.16775429 0.16467175 0.16164571 0.15867516 0.15575907 0.15289646 0.15008636 0.1473278 0.14461984 0.14196156 0.13935207 0.13679045 0.13427585 0.1318074 0.12938425 0.12700559 0.12467061 0.12237849 0.12012845 0.117919736 0.11575158 0.11362325 0.111534 0.10948312 0.107469924 0.1054937 0.10355379 0.10164951 0.09978022 0.09794527 0.09614404 0.094375916 0.09264027 0.090936534 0.0892641 0.087622404 0.08601088 0.08442898 0.08287615 0.08135187 0.0798556 0.07838684 0.07694508 0.07552982 0.074140586 0.072776884 0.07143826 0.07012424 0.06883439 0.06756824 0.06632538 0.06510538 0.0639078 0.06273224 0.061578307 0.060445588 0.0593337 0.058242258 0.057170887 0.056119215 0.05508689 0.054073542 0.053078834 0.05210242 0.051143963 0.050203133

</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="2.875" PeakHeight="246.095" Num="5" zHalfNm="224.357" Error="1.328">
-52.031 6.147 -4.058 2.012 -0.665
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6509.167" A="-1.78385355E11" B="5.5057208E7" C="-4248.116" Error="0.00152"/>
<QuasiParabolic ID="2" StartDistance="6509.167" EndDistance="6538.333" A="0.0" B="-1107.1978" C="0.21011564" Error="0.0194"/>
<QuasiParabolic ID="3" StartDistance="6538.333" EndDistance="6564.0" A="6.9622186E10" B="-2.1375088E7" C="1640.6393" Error="0.0194"/>
<QuasiParabolic ID="4" StartDistance="6564.0" EndDistance="6566.0" A="-6.6886415E11" B="2.03635968E8" C="-15499.143" Error="0.00124"/>
<QuasiParabolic ID="5" StartDistance="6566.0" EndDistance="6574.0" A="6.3579965E12" B="-1.93674202E9" C="147490.34" Error="0.0166"/>
<QuasiParabolic ID="6" StartDistance="6574.0" EndDistance="6581.0" A="6.858171E12" B="-2.08890931E9" C="159063.77" Error="0.0096"/>
<QuasiParabolic ID="7" StartDistance="6581.0" EndDistance="6596.0" A="1.81094905E13" B="-5.5082435E9" C="418852.12" Error="0.0118"/>
<QuasiParabolic ID="8" StartDistance="6596.0" EndDistance="6598.0" A="-3.7718189E13" B="1.14194944E10" C="-864330.0" Error="0.00477"/>
<QuasiParabolic ID="9" StartDistance="6598.0" EndDistance="6616.095" A="-1.65549357E13" B="5.0044431E9" C="-378193.9" Error="0.0048"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="87.5" Depth="0.154"/>
<TopsideChapman PeakHeight="246.095" PeakDensity="102551.18" PeakScaleHeight="16.829" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
