<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-30 -120 07:20:00.000"
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" >
2026.04.30 (120) 07:20:00</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">
FF202612004300720001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.759" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.720" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="232.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="232.500" 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="3.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="258.022" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="241.356" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.194" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.860" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.400" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.033" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.812" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="24.870" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="29">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
232.500 232.500 232.500 235.000 235.000 235.000 237.500 237.500 240.000 240.000 242.500 242.500 245.000 245.000 247.500 250.000 250.000 252.500 252.500 255.000 258.022 261.633 266.026 271.484 278.448 287.641 300.338 319.014 349.192
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 84 84 84 84 84 84 111 108 96 93 96 93 96 93 90 96 99 99 96 93 78 78 69 69 66 0 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 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="380">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 138.58333 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 167.16667 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 195.75 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 241.356 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0
</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 0.3533988 0.35268724 0.35168076 0.35038465 0.34873247 0.34680796 0.3446216 0.34204412 0.33923516 0.3360058 0.33251932 0.32860458 0.3243659 0.31978112 0.314722 0.3093164 0.3034716 0.29713094 0.29034886 0.28298154 0.27503994 0.26650268 0.25724816 0.24721296 0.23637795 0.22454801 0.21165071 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 0.2044898 0.20987755 0.2152653 0.22065306 0.22604081 0.23142858 0.23681633 0.24220408 0.24759184 0.2529796 0.25836736 0.2637551 0.26914287 0.27453062 0.27991837 0.28530613 0.29069388 0.29608163 0.3014694 0.30685714 0.3122449 0.31763265 0.3230204 0.32840815 0.3337959 0.3391837 0.34457144 0.3499592 0.354 0.3616131 0.39577097 0.43604165 0.48205447 0.5328225 0.58722425 0.6444036 0.7038978 0.7655521 0.82945925 0.8958347 0.9649662 1.0372379 1.113076 1.1929549 1.2773577 1.366835 1.4619262 1.5631067 1.6707535 1.7850035 1.9056636 2.0319588 2.162442 2.2950456 2.4272413 2.5563908 2.6801426 2.7967873 2.9051964 3.0049224 3.0958924 3.1783457 3.2526462 3.3192558 3.3786259 3.4312062 3.4773781 3.5175097 3.551914 3.5808477 3.604526 3.6231358 3.6368055 3.6456385 3.6496997 3.65 3.6493323 3.6457112 3.6390696 3.6295483 3.6172893 3.6024342 3.5851235 3.5654967 3.5436912 3.5198421 3.4940822 3.4665406 3.437343 3.4066117 3.3744655 3.3410187 3.3063815 3.2706604 3.2339573 3.19637 3.1579916 3.118912 3.0792155 3.0389836 2.9982927 2.9572158 2.9158218 2.8741755 2.8323383 2.7903686 2.7483199 2.7062435 2.6641872 2.6221955 2.58031 2.5385697 2.4970105 2.4556658 2.4145663 2.373741 2.333216 2.2930152 2.253161 2.2136734 2.174571 2.13587 2.0975857 2.0597312 2.0223188 1.9853591 1.9488611 1.9128331 1.877282 1.8422137 1.8076332 1.7735443 1.7399503 1.7068533 1.6742549 1.6421561 1.6105568 1.5794568 1.5488551 1.51875 1.4891396 1.4600216 1.431393 1.4032508 1.3755914 1.3484107 1.321705 1.2954695 1.2696998 1.2443911 1.2195383 1.1951362 1.1711795 1.1476629 1.1245805 1.1019269 1.0796963 1.0578828 1.0364805 1.0154836 0.99488616 0.97468203 0.9548653 0.93542993 0.91637 0.8976794 0.8793522 0.8613824 0.8437642 0.82649153 0.8095586 0.7929595 0.77668864 0.7607401 0.7451083 0.7297876 0.71477234 0.70005715 0.6856366 0.67150515 0.65765756 0.6440886 0.63079315 0.617766 0.60500216 0.5924967 0.5802446 0.5682411 0.55648154 0.5449611 0.5336752 0.52261937 0.51178914 0.50118005 0.49078786 0.48060828 0.47063714 0.46087036 0.45130387 0.44193375 0.4327561 0.42376706 0.4149629 0.4063399 0.3978945 0.3896231 0.3815222 0.3735884 0.36581832 0.3582087 0.3507562 0.34345773 0.33631015 0.32931042 0.32245547 0.31574243 0.3091684 0.3027305 0.296426 0.29025218 0.28420636 0.2782859 0.27248824 0.2668109 0.2612514 0.25580728 0.2504762 0.24525589 0.24014398 0.23513831 0.23023665 0.22543688 0.2207369 0.21613465 0.21162811 0.2072153 0.20289429 0.19866319 0.19452013 0.19046329 0.1864909 0.1826012 0.17879248 0.17506307 0.17141132 0.16783562 0.1643344 0.16090612 0.15754925 0.15426232 0.15104386 0.14789249 0.14480677 0.14178538 0.13882695 0.1359302 0.13309382 0.13031657 0.12759721 0.12493456 0.12232742 0.11977464 0.1172751 0.11482768 0.11243129 0.110084884 0.107787415 0.10553786 0.10333523 0.10117854 0.09906684 0.09699919 0.094974674 0.09299239 0.09105146 0.08915102 0.08729023 0.08546826 0.08368431 0.08193758 0.0802273 0.0785527 0.07691305 0.07530761 0.07373567 0.07219653 0.07068951 0.06921394 0.06776916 0.066354536 0.06496943 0.063613236 0.062285338 0.06098516 0.059712112 0.058465637 0.057245176 0.056050185 0.05488014 0.05373451 0.052612796 0.05151449 0.050439112

</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="3.65" PeakHeight="241.356" Num="5" zHalfNm="222.194" Error="1.778">
-48.353 5.113 -3.724 2.061 -0.703
</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="6508.583" A="-1.85709953E11" B="5.7317888E7" C="-4422.5513" Error="0.00149"/>
<QuasiParabolic ID="2" StartDistance="6508.583" EndDistance="6537.167" A="0.0" B="-2685.3135" C="0.4526005" Error="0.0456"/>
<QuasiParabolic ID="3" StartDistance="6537.167" EndDistance="6563.0" A="9.0695492E10" B="-2.7813432E7" C="2132.4043" Error="0.0456"/>
<QuasiParabolic ID="4" StartDistance="6563.0" EndDistance="6566.0" A="2.00940297E12" B="-6.1251782E8" C="46677.918" Error="0.0351"/>
<QuasiParabolic ID="5" StartDistance="6566.0" EndDistance="6572.0" A="1.06509495E13" B="-3.24472806E9" C="247120.38" Error="0.0558"/>
<QuasiParabolic ID="6" StartDistance="6572.0" EndDistance="6582.0" A="1.30318179E13" B="-3.96927744E9" C="302244.3" Error="0.0509"/>
<QuasiParabolic ID="7" StartDistance="6582.0" EndDistance="6592.0" A="4.603762E13" B="-1.39983882E10" C="1064103.2" Error="0.013"/>
<QuasiParabolic ID="8" StartDistance="6592.0" EndDistance="6611.356" A="-3.45205878E13" B="1.04428165E10" C="-789750.25" Error="0.00372"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="85.75" Depth="0.154"/>
<TopsideChapman PeakHeight="241.356" PeakDensity="165291.56" PeakScaleHeight="14.812" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
