<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 23:50:00.000"
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="18.0">
<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 22 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.03.02 (061) 23:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606103022350009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.150" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.198" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="370.863" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="343.644" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="323.683" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.590" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.775" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.727" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.315" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="45.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="92">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 360.000 363.333 366.667 370.000 370.000 375.000 376.667 378.333 380.000 380.000 380.000 380.000 379.667 379.333 379.000 378.667 378.333 378.000 377.667 377.333 377.000 376.667 376.333 376.000 375.667 375.333 375.000 370.000 370.000 370.000 372.500 375.000 375.000 375.000 375.000 375.000 372.500 370.000 370.000 370.000 360.000 350.000 350.000 350.000 345.000 340.000 340.000 339.286 338.571 337.857 337.143 336.429 335.714 335.000 335.000 335.000 337.500 340.000 340.000 337.500 335.000 335.000 340.000 340.833 341.667 342.500 343.333 344.167 345.000 345.000 345.000 350.000 350.000 352.143 354.286 356.429 358.571 360.714 362.857 363.403 364.052 364.839 365.812 367.045 368.659 370.863 374.052 379.079 388.173 409.620
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 51 0 0 54 51 51 0 48 54 0 51 48 0 0 0 57 0 0 0 54 0 51 51 0 0 0 51 54 54 51 0 57 57 54 0 51 0 51 54 54 57 54 0 60 0 60 0 0 0 0 0 0 0 57 57 60 0 54 57 60 51 60 57 57 0 57 60 0 51 54 57 60 54 0 0 0 0 60 0 51 57 60 57 54 54 48 48 51 51 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 0.390625 -1.171875 2.734375 -0.390625 -0.390625 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -1.171875 1.953125 -1.953125 -1.953125 0.390625 -0.390625 1.171875 -0.390625 -1.171875 -1.171875 1.171875 -1.171875 0.390625 0.390625 -1.171875 0.390625 -0.390625 0.390625 -0.390625 0.390625 -1.953125 -1.171875 -0.390625 -1.171875 1.953125 0.390625 -0.390625 -1.171875 1.953125 -0.390625 0.390625 -1.953125 -1.171875 -0.390625 -1.953125 -0.390625 -0.390625 -0.390625 -2.734375 0.390625 -1.171875 -2.734375 0.390625 -0.390625 0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -1.171875 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -2.734375 1.171875 -1.171875 1.953125 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="96">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 145.4 150.0 155.0 160.0 165.0 170.0 175.0 180.0 180.801 185.0 190.0 195.0 200.0 205.0 210.0 215.0 216.201 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 343.644 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0
</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 0.253 0.205 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.218 0.24 0.262 0.284 0.305 0.327 0.349 0.354 0.401 0.51 0.707 0.926 1.127 1.316 1.502 1.688 1.878 2.073 2.275 2.488 2.712 2.949 3.203 3.476 3.771 4.094 4.449 4.845 5.29 5.797 6.384 7.059 7.751 8.0 7.994 7.877 7.638 7.31 6.921 6.495 6.053 5.608 5.171 4.75 4.349 3.972 3.62 3.294 2.993 2.716 2.463 2.231 2.02 1.829 1.654 1.496 1.352 1.222 1.105 0.998 0.902 0.815 0.736 0.665 0.601 0.542 0.49 0.442 0.4 0.361 0.326 0.294 0.266 0.24 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="8.0" PeakHeight="343.644" Num="5" zHalfNm="323.683" Error="6.794">
-100.298 -44.141 22.441 -2.618 -2.827
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="106.201" Depth="0.154"/>
<TopsideChapman PeakHeight="343.644" PeakDensity="794044.7" PeakScaleHeight="15.315" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
