<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 23:30:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="14.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 55 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 25% PACIFIC flags: Moderate F-spread, 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, Unidentified traces above foF2</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.10.22 (295) 23:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202629510222330009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.090" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.917" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="0.700" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="390.564" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="363.173" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="337.968" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.733" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.901" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.564" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.030" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="53.590" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.110" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="99">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 347.500 355.000 357.500 360.000 375.000 377.143 379.286 381.429 383.571 385.714 387.857 390.000 397.500 405.000 405.000 402.500 400.000 397.500 395.000 392.500 390.000 405.000 420.000 423.333 426.667 430.000 435.000 445.000 450.000 460.000 440.000 443.333 446.667 450.000 460.000 470.000 415.000 405.000 405.000 387.500 370.000 367.500 365.000 365.496 365.993 366.489 366.986 367.482 367.979 368.475 368.972 369.468 369.965 370.461 370.958 371.454 371.951 372.447 372.944 373.440 373.937 374.433 374.929 375.426 375.922 376.419 376.915 377.412 377.908 378.405 378.901 379.398 379.894 380.391 380.887 381.384 381.880 382.377 382.471 382.575 382.691 382.821 382.967 383.132 383.322 383.541 383.796 384.099 384.462 384.908 385.466 386.186 387.150 388.508 390.564 394.038 400.000 424.243
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 60 0 57 57 60 57 0 60 0 60 57 0 54 57 0 0 0 0 0 63 60 60 0 57 54 54 57 57 54 54 0 0 54 54 57 60 60 60 0 60 0 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 57 0 0 0 0 0 0 0 0 0 0 51 0 51 0 0 0 0 0 51 0 0 0 0 0 0 0 0 0 45 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 0.390625 1.953125 -0.390625 1.171875 -0.390625 -0.390625 2.734375 0.390625 1.171875 0.390625 1.953125 2.734375 2.734375 -2.734375 -2.734375 2.734375 1.171875 2.734375 -0.390625 -1.171875 2.734375 2.734375 -2.734375 2.734375 1.953125 0.390625 -0.390625 1.953125 1.171875 0.390625 -1.171875 0.390625 1.171875 -2.734375 -2.734375 -1.171875 0.390625 -1.953125 -1.171875 1.953125 1.171875 1.953125 1.953125 0.390625 2.734375 -0.390625 0.390625 1.171875 1.171875 1.171875 1.953125 -0.390625 1.171875 1.953125 1.953125 1.171875 -0.390625 1.171875 2.734375 1.171875 0.390625 0.390625 1.171875 1.953125 0.390625 0.390625 1.953125 2.734375 1.171875 1.171875 1.171875 1.171875 1.953125 0.390625 1.171875 0.390625 0.390625 1.953125 1.171875 2.734375 1.171875 1.171875 1.171875 0.390625 1.953125 1.171875 -0.390625 0.390625 0.390625 1.171875 2.734375 2.734375 2.734375 0.390625 1.953125 1.953125 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="111">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 145.503 150.0 155.0 160.0 165.0 170.0 175.0 180.0 181.005 185.0 190.0 195.0 200.0 205.0 210.0 215.0 216.508 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 363.173 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.344 0.332 0.313 0.288 0.254 0.206 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.217 0.239 0.261 0.282 0.304 0.326 0.347 0.354 0.432 0.552 0.696 0.876 1.096 1.354 1.64 1.942 2.253 2.568 2.887 3.209 3.534 3.864 4.2 4.541 4.891 5.25 5.619 6.001 6.398 6.811 7.245 7.704 8.194 8.723 9.308 9.976 10.789 11.3 11.289 11.155 10.891 10.529 10.093 9.607 9.091 8.559 8.025 7.497 6.984 6.489 6.017 5.569 5.147 4.751 4.381 4.036 3.715 3.418 3.143 2.889 2.654 2.438 2.239 2.055 1.887 1.731 1.589 1.458 1.337 1.227 1.125 1.032 0.947 0.868 0.796 0.73 0.67 0.614 0.563 0.517 0.474 0.434 0.398 0.365 0.335 0.307 0.282 0.258 0.237 0.217

</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="11.3" PeakHeight="363.173" Num="5" zHalfNm="337.968" Error="6.067">
-120.443 -49.319 34.79 -15.272 3.579
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="106.508" Depth="0.154"/>
<TopsideChapman PeakHeight="363.173" PeakDensity="1584243.1" PeakScaleHeight="18.03" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
