<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-07 -066 09:20:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</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" >
2026.03.07 (066) 09:20:00</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">
FF202606603070920009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.255" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.362" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="7.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="335.000" 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="1.438" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="277.718" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="229.014" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.876" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="69.011" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.224" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="37.415" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="75.030" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.780" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 8.05 8.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 245.000 245.000 245.000 245.000 247.500 250.000 250.000 250.000 250.000 250.000 250.000 245.000 250.000 250.000 250.000 250.500 251.000 251.500 252.000 252.500 253.000 253.500 254.000 254.500 255.000 255.000 250.000 250.000 250.000 252.500 255.000 255.000 255.000 255.000 255.000 255.000 256.500 258.000 259.500 261.000 262.500 264.000 265.500 267.000 268.500 270.000 270.000 270.000 270.000 270.000 270.000 270.000 267.500 265.000 265.000 270.000 275.000 275.000 277.500 280.000 285.000 285.000 285.000 285.000 285.000 300.000 295.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 295.000 300.000 300.000 310.000 310.000 307.500 305.000 310.000 310.000 310.000 315.000 315.000 320.000 325.000 325.000 325.000 330.000 335.000 335.000 340.000 345.000 360.000 365.000 365.000 375.000 388.944 425.451
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 63 0 63 72 69 75 0 0 0 60 72 72 78 0 75 0 0 0 0 0 0 0 0 0 0 75 63 66 78 0 72 75 78 75 66 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 69 54 72 78 0 75 72 0 69 0 60 60 54 69 51 0 69 60 72 75 78 78 72 72 81 78 75 78 63 66 0 78 78 78 75 78 72 75 69 72 66 72 72 72 72 72 57 63 69 69 69 0
</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 0.390625 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 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 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 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="144">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.964 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.726 125.0 130.0 133.453 135.0 140.0 145.0 145.179 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 277.718 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.203 0.961 1.246 1.392 1.438 1.412 1.331 1.289 1.289 1.289 1.289 1.309 1.372 1.436 1.438 1.642 1.827 2.005 2.184 2.369 2.562 2.765 2.981 3.213 3.463 3.732 4.023 4.338 4.676 5.037 5.415 5.805 6.195 6.573 6.927 7.246 7.521 7.745 7.917 8.032 8.092 8.1 8.097 8.071 8.021 7.948 7.855 7.745 7.619 7.48 7.33 7.171 7.004 6.83 6.653 6.471 6.288 6.104 5.919 5.735 5.552 5.37 5.191 5.015 4.842 4.673 4.507 4.345 4.188 4.034 3.885 3.74 3.599 3.463 3.331 3.203 3.08 2.96 2.845 2.734 2.627 2.523 2.424 2.328 2.235 2.146 2.061 1.978 1.899 1.823 1.75 1.679 1.612 1.547 1.484 1.424 1.367 1.311 1.258 1.207 1.158 1.111 1.066 1.023 0.981 0.941 0.903 0.866 0.831 0.797 0.764 0.733 0.703 0.675 0.647 0.621 0.595 0.571 0.548 0.525 0.504 0.483 0.464 0.445 0.427 0.409 0.392 0.376 0.361 0.346 0.332 0.318 0.305 0.293 0.281 0.269 0.258 0.248 0.238 0.228 0.219 0.21 0.201

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.438" PeakHeight="110.0" Num="3" Error="0.0">
-27.975 9.7 -1.761
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.438" EndFrequency="8.1" PeakHeight="277.718" Num="5" zHalfNm="229.014" Error="2.568">
-120.147 -13.75 -1.688 2.937 0.109
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="35.179" Depth="0.149"/>
<TopsideChapman PeakHeight="277.718" PeakDensity="814019.9" PeakScaleHeight="37.415" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
