<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 22:25:00.000"
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="20.0">
<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" >
2026.04.21 (111) 22:25:00</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">
FF202611104212225001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.697" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.400" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="3.550" 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="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="248.033" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="231.304" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.162" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="24.017" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.886" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.633" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="23.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.150" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 251.667 253.333 255.000 257.500 257.500 260.000 260.000 262.500 265.000 267.500 270.000 272.500 275.000 277.500 280.000 282.500 287.223 292.967 300.105
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 72 72 75 72 75 75 75 75 75 75 60 60 87 87 78 78 75 69 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="353">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 141.76666 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 173.53334 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 205.3 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 248.033 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0
</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 0.3529118 0.35212782 0.35105073 0.34976003 0.34818783 0.34641507 0.34437758 0.3420864 0.33948475 0.33665827 0.33362216 0.33019677 0.32654136 0.32258692 0.31830716 0.31371468 0.30880073 0.3034882 0.29780343 0.29173848 0.2852433 0.27829233 0.2709142 0.26291555 0.25434455 0.24518983 0.23526043 0.22462031 0.21303146 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 0.20226233 0.20711018 0.21195802 0.21680588 0.22165373 0.22650157 0.23134942 0.23619728 0.24104512 0.24589297 0.25074083 0.25558868 0.2604365 0.26528436 0.2701322 0.27498007 0.27982792 0.28467575 0.2895236 0.29437146 0.2992193 0.30406716 0.30891502 0.31376284 0.3186107 0.32345855 0.3283064 0.33315426 0.3380021 0.34284994 0.3476978 0.35254565 0.354 0.38161352 0.4243359 0.4709032 0.5213049 0.57555425 0.633648 0.6956103 0.76148534 0.8313189 0.9051403 0.98297685 1.0648547 1.1507385 1.2405936 1.3343166 1.4317657 1.532733 1.6369216 1.7439762 1.8535036 1.964979 2.0778239 2.1914256 2.3050861 2.4180932 2.5297122 2.639181 2.7457564 2.848739 2.9474535 3.0412447 3.129535 3.2117898 3.2875519 3.3563843 3.4179475 3.4719095 3.5180357 3.5560973 3.5859354 3.607418 3.6204565 3.6249912 3.625 3.6229591 3.616699 3.6064422 3.5924156 3.5748458 3.5539575 3.5299737 3.5031123 3.4735875 3.441607 3.407373 3.37108 3.3329158 3.2930608 3.2516873 3.20896 3.1650352 3.1200616 3.0741794 3.0275218 2.9802134 2.932372 2.8841076 2.8355231 2.7867148 2.7377717 2.6887774 2.6398087 2.5909367 2.542227 2.4937398 2.4455307 2.3976498 2.350143 2.3030524 2.2564156 2.2102666 2.1646361 2.119551 2.075035 2.0311103 1.9877945 1.9451039 1.9030522 1.8616507 1.8209089 1.7808344 1.7414333 1.7027096 1.6646663 1.6273048 1.5906254 1.5546272 1.5193084 1.4846661 1.4506967 1.4173957 1.3847579 1.3527775 1.3214482 1.2907631 1.2607151 1.2312962 1.2024986 1.1743137 1.146733 1.1197476 1.0933486 1.0675268 1.0422727 1.0175768 0.9934299 0.96982217 0.9467441 0.9241861 0.90213853 0.88059175 0.8595363 0.83896255 0.8188611 0.79922265 0.7800377 0.76129717 0.74299186 0.72511274 0.70765096 0.69059765 0.6739441 0.6576818 0.6418023 0.6262973 0.6111585 0.5963779 0.5819477 0.5678599 0.554107 0.5406814 0.52757585 0.51478297 0.5022957 0.49010706 0.47821024 0.4665985 0.4552653 0.44420424 0.43340895 0.42287326 0.41259113 0.4025567 0.39276406 0.38320765 0.37388185 0.36478123 0.35590053 0.34723452 0.3387781 0.33052632 0.32247433 0.31461737 0.3069508 0.29947007 0.29217076 0.28504854 0.27809915 0.27131847 0.26470244 0.2582471 0.25194865 0.24580325 0.23980726 0.23395708 0.22824918 0.22268014 0.21724659 0.21194531 0.20677306 0.20172673 0.19680329 0.19199975 0.18731323 0.18274087 0.17827992 0.17392768 0.16968152 0.16553885 0.16149718 0.15755405 0.15370704 0.14995386 0.14629221 0.14271986 0.13923466 0.13583447 0.13251723 0.12928092 0.12612358 0.123043284 0.12003815 0.117106356 0.114246115 0.11145569 0.10873336 0.106077485 0.10348645 0.10095866 0.09849258 0.0960867 0.09373957 0.09144974 0.08921582 0.087036446 0.08491029 0.08283605 0.08081246 0.07883829 0.07691233 0.075033404 0.07320036 0.071412094 0.069667496 0.06796551 0.066305086 0.064685225 0.06310493 0.061563227 0.060059186 0.05859188 0.05716042 0.05576392 0.054401536 0.05307243 0.05177579 0.050510824

</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="3.625" PeakHeight="248.033" Num="5" zHalfNm="231.304" Error="0.391">
-43.119 0.655 -0.425 0.225 -0.069
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="15" 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="6511.767" A="-1.5048301E11" B="4.6445372E7" C="-3583.6226" Error="0.0016"/>
<QuasiParabolic ID="2" StartDistance="6511.767" EndDistance="6543.533" A="0.0" B="628.8715" C="-0.05654746" Error="0.011"/>
<QuasiParabolic ID="3" StartDistance="6543.533" EndDistance="6545.0" A="-3.01919607E12" B="9.2255501E8" C="-70474.66" Error="0.0243"/>
<QuasiParabolic ID="4" StartDistance="6545.0" EndDistance="6557.0" A="1.71370234E11" B="-5.2407968E7" C="4006.857" Error="0.0395"/>
<QuasiParabolic ID="5" StartDistance="6557.0" EndDistance="6569.0" A="-3.8491472E10" B="1.1603531E7" C="-874.30054" Error="0.0134"/>
<QuasiParabolic ID="6" StartDistance="6569.0" EndDistance="6570.0" A="8.9636294E11" B="-2.7302256E8" C="20790.04" Error="3.48E-11"/>
<QuasiParabolic ID="7" StartDistance="6570.0" EndDistance="6571.0" A="-8.0720757E11" B="2.4556816E8" C="-18676.53" Error="0.0"/>
<QuasiParabolic ID="8" StartDistance="6571.0" EndDistance="6572.0" A="8.9241944E11" B="-2.71743392E8" C="20686.697" Error="0.0"/>
<QuasiParabolic ID="9" StartDistance="6572.0" EndDistance="6574.0" A="-7.7499924E11" B="2.3568776E8" C="-17918.836" Error="8.72E-5"/>
<QuasiParabolic ID="10" StartDistance="6574.0" EndDistance="6576.0" A="1.0838286E13" B="-3.297408E9" C="250798.52" Error="0.0291"/>
<QuasiParabolic ID="11" StartDistance="6576.0" EndDistance="6584.0" A="9.8648373E12" B="-3.00134707E9" C="228287.8" Error="0.0126"/>
<QuasiParabolic ID="12" StartDistance="6584.0" EndDistance="6601.0" A="2.53391683E13" B="-7.7019336E9" C="585258.2" Error="0.0302"/>
<QuasiParabolic ID="13" StartDistance="6601.0" EndDistance="6609.0" A="-4.4128209E12" B="1.31245517E9" C="-97546.56" Error="0.00842"/>
<QuasiParabolic ID="14" StartDistance="6609.0" EndDistance="6618.033" A="-5.5544438E13" B="1.67857838E10" C="-1268172.1" Error="0.00337"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="95.3" Depth="0.154"/>
<TopsideChapman PeakHeight="248.033" PeakDensity="163035.05" PeakScaleHeight="12.633" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
