<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 01:10:00.000"
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="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 55 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 20% PACIFIC flags: Moderate F-spread, F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, 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) 01:10:00</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">
FF202606103020110009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="5.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.080" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.249" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="395.280" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="342.482" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="314.515" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.950" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="42.000" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.706" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="21.342" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="49.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="59">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
385.000 380.000 365.000 345.000 350.000 340.000 335.000 330.000 325.000 330.000 330.000 327.500 325.000 330.000 330.000 330.000 330.000 335.000 335.882 336.765 337.647 338.529 339.412 340.294 341.176 342.059 342.941 343.824 344.706 345.588 346.471 347.353 348.235 349.118 350.000 350.000 355.000 357.000 359.000 361.000 363.000 365.000 367.000 369.000 371.000 373.000 375.000 376.250 377.500 378.070 378.751 379.579 380.609 381.922 383.657 386.053 389.579 395.280 406.065
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 51 51 60 57 60 54 57 54 60 57 0 0 66 60 60 57 57 0 54 0 0 0 0 0 0 0 0 0 0 0 0 0 60 57 0 57 54 54 0 0 63 0 63 63 0 0 0 54 0 66 66 0 0 51 66 69 0 57
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.953125 0.390625 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 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 -1.171875 0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 2.734375 -1.953125 -0.390625 -1.953125 -0.390625 -1.953125 -1.171875 2.734375 -1.953125 -1.171875 -1.953125 1.953125 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="107">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.902 150.0 155.0 160.0 165.0 170.0 175.0 180.0 183.805 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 220.707 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 342.482 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.334 0.317 0.294 0.263 0.22 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.205 0.226 0.247 0.268 0.288 0.309 0.33 0.351 0.354 0.423 0.534 0.667 0.806 0.947 1.091 1.239 1.393 1.554 1.724 1.905 2.098 2.305 2.53 2.774 3.04 3.33 3.648 3.995 4.365 4.747 5.111 5.408 5.578 5.6 5.593 5.537 5.435 5.296 5.127 4.936 4.729 4.512 4.29 4.066 3.843 3.625 3.412 3.206 3.008 2.818 2.638 2.466 2.304 2.151 2.007 1.872 1.745 1.626 1.514 1.41 1.313 1.222 1.137 1.058 0.984 0.915 0.851 0.792 0.736 0.684 0.636 0.592 0.55 0.511 0.475 0.442 0.411 0.382 0.355 0.33 0.307 0.285 0.265 0.246 0.229 0.213

</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="5.6" PeakHeight="342.482" Num="5" zHalfNm="314.515" Error="4.7">
-103.219 -28.421 11.203 0.213 -1.551
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="110.707" Depth="0.154"/>
<TopsideChapman PeakHeight="342.482" PeakDensity="389081.88" PeakScaleHeight="21.342" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
