<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 00:10:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, 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" >
2026.03.10 (069) 00:10:00</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">
FF202606903100010009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.953" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.007" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="375.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="375.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="420.175" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="380.397" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="345.900" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.435" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="53.688" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.675" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="25.259" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="63.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.260" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="102">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
375.000 380.000 380.000 380.000 380.000 380.000 380.000 382.500 385.000 385.000 390.000 387.500 385.000 390.000 390.000 394.167 398.333 402.500 406.667 410.833 415.000 416.429 417.857 419.286 420.714 422.143 423.571 425.000 420.000 410.000 405.000 407.500 410.000 409.688 409.375 409.063 408.750 408.438 408.125 407.813 407.500 407.188 406.875 406.563 406.250 405.938 405.625 405.313 405.000 400.000 410.000 410.000 410.000 410.000 412.500 415.000 415.000 415.000 420.000 420.000 421.250 422.500 423.750 425.000 425.000 395.000 405.000 395.000 395.000 395.000 395.000 395.000 395.000 395.000 395.000 395.000 387.500 380.000 385.000 390.000 395.000 400.000 395.000 397.500 400.000 402.500 405.000 407.500 410.000 415.000 415.000 415.000 415.259 415.582 415.993 416.536 417.287 418.391 420.175 423.550 432.351 513.274
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 0 63 60 63 63 0 66 63 63 0 66 63 54 60 57 51 54 0 63 0 0 0 54 0 0 57 60 63 54 0 60 0 0 0 0 51 0 57 0 0 57 54 0 54 57 0 60 48 60 60 60 51 0 57 51 54 57 63 0 0 0 54 57 63 60 66 0 0 60 66 60 54 63 66 0 51 54 66 0 60 60 0 0 0 57 0 60 60 57 57 51 57 0 57 0 48 57 51 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 2.734375 2.734375 -1.171875 -1.171875 2.734375 -1.171875 2.734375 -1.171875 -0.390625 -0.390625 -1.171875 0.390625 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -0.390625 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -1.953125 -1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.171875 0.390625 0.390625 1.171875 -1.171875 0.390625 0.390625 1.171875 0.390625 0.390625 -0.390625 0.390625 -1.953125 0.390625 -2.734375 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -2.734375 0.390625 -1.953125 0.390625 0.390625 0.390625 -0.390625 -2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="135">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 145.968 150.0 155.0 160.0 165.0 170.0 175.0 180.0 181.935 185.0 190.0 195.0 200.0 205.0 210.0 215.0 217.903 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 380.397 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0
</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 0.332 0.315 0.29 0.257 0.211 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.213 0.235 0.256 0.277 0.299 0.32 0.342 0.354 0.388 0.482 0.598 0.743 0.918 1.121 1.348 1.59 1.844 2.106 2.374 2.649 2.929 3.215 3.507 3.806 4.112 4.427 4.75 5.082 5.426 5.781 6.149 6.532 6.931 7.348 7.785 8.244 8.728 9.235 9.756 10.239 10.498 10.5 10.467 10.364 10.199 9.984 9.728 9.438 9.124 8.791 8.446 8.094 7.74 7.386 7.036 6.692 6.356 6.03 5.715 5.411 5.118 4.838 4.571 4.315 4.072 3.841 3.622 3.413 3.216 3.03 2.853 2.686 2.529 2.38 2.24 2.108 1.983 1.865 1.755 1.65 1.552 1.46 1.373 1.291 1.214 1.141 1.073 1.009 0.949 0.892 0.839 0.788 0.741 0.697 0.655 0.616 0.579 0.544 0.512 0.481 0.452 0.425 0.4 0.376 0.353 0.332 0.312 0.293 0.276 0.259 0.244 0.229 0.215 0.202

</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="10.5" PeakHeight="380.397" Num="5" zHalfNm="345.9" Error="3.909">
-141.303 -40.24 28.799 -11.874 2.124
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="107.903" Depth="0.154"/>
<TopsideChapman PeakHeight="380.397" PeakDensity="1367866.0" PeakScaleHeight="25.259" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
