<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 23:10:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: Moderate F-spread, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2, Trace overlaps while constructing baseline</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" >
2026.11.01 (305) 23:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630511012310009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.692" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.097" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.700" 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="0.550" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="386.175" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="323.909" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.937" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="89.733" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.452" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="46.093" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="92.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.830" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="27">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
390.000 390.000 390.000 390.000 385.000 380.000 340.000 350.000 380.000 385.000 400.000 415.000 400.000 405.000 410.000 415.000 423.333 431.667 440.000 445.000 475.000 480.000 485.000 490.000 495.000 495.000 500.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 60 0 0 54 66 60 60 0 54 57 0 0 0 0 0 0 0 57 0 0 0 54 54 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 0.390625 0.390625 0.390625 -0.390625 -2.734375 -0.390625 1.171875 0.390625 0.390625 -1.953125 0.390625 -1.171875 -1.171875 -1.171875 0.390625 -0.390625 -0.390625 -0.390625 1.171875 0.390625 -0.390625 1.171875 1.171875 -1.953125 -0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="165">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 144.89 145.0 150.0 155.0 160.0 165.0 170.0 175.0 179.779 180.0 185.0 190.0 195.0 200.0 205.0 210.0 214.669 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 386.175 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0
</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 0.331 0.312 0.286 0.249 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.201 0.223 0.245 0.267 0.289 0.311 0.333 0.354 0.359 0.424 0.483 0.543 0.607 0.676 0.751 0.834 0.925 1.024 1.132 1.246 1.367 1.493 1.622 1.753 1.886 2.02 2.153 2.286 2.419 2.55 2.68 2.807 2.933 3.054 3.172 3.284 3.389 3.485 3.57 3.642 3.697 3.734 3.749 3.75 3.748 3.737 3.719 3.694 3.663 3.626 3.584 3.537 3.486 3.431 3.373 3.313 3.25 3.185 3.119 3.052 2.983 2.914 2.845 2.775 2.706 2.637 2.568 2.5 2.433 2.366 2.3 2.235 2.172 2.109 2.048 1.988 1.929 1.871 1.815 1.76 1.706 1.654 1.602 1.553 1.504 1.457 1.411 1.367 1.323 1.281 1.24 1.201 1.162 1.125 1.089 1.053 1.019 0.986 0.954 0.923 0.893 0.864 0.836 0.808 0.782 0.756 0.731 0.707 0.684 0.661 0.64 0.619 0.598 0.578 0.559 0.541 0.523 0.506 0.489 0.473 0.457 0.442 0.427 0.413 0.399 0.386 0.373 0.361 0.349 0.337 0.326 0.315 0.305 0.295 0.285 0.275 0.266 0.257 0.249 0.24 0.232 0.225 0.217 0.21 0.203

</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="3.75" PeakHeight="386.175" Num="5" zHalfNm="323.909" Error="6.088">
-165.648 -10.841 6.445 -3.479 2.017
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="104.669" Depth="0.154"/>
<TopsideChapman PeakHeight="386.175" PeakDensity="174472.7" PeakScaleHeight="46.093" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
