<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 13:40:00.000"
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 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</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" >
2026.10.12 (285) 13:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628510121340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="7.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.399" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.965" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="7.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="335.860" 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="3.362" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.348" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="223.934" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="154.981" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.316" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="67.760" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="11.647" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="42.499" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="122.730" 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="27">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 325.208 325.442 325.704 326.003 326.344 326.740 327.202 327.750 328.410 329.221 330.240 331.561 333.338 335.860 339.718
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 66 66 66 63 60 63 63 60 63 63 60 57 54 54 57 57 63 63 63 63 60 60 60 66 66 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 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="143">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.488 90.0 95.0 100.0 105.0 110.0 111.666 113.332 114.998 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 223.934 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.262 2.91 3.252 3.362 3.239 3.239 3.362 3.362 3.571 3.816 4.062 4.286 4.485 4.665 4.831 4.986 5.133 5.274 5.412 5.546 5.679 5.811 5.943 6.078 6.215 6.358 6.509 6.674 6.868 7.05 7.05 7.036 7.006 6.96 6.899 6.825 6.739 6.644 6.539 6.426 6.307 6.181 6.052 5.918 5.781 5.643 5.502 5.361 5.219 5.078 4.937 4.797 4.659 4.522 4.387 4.253 4.123 3.995 3.869 3.746 3.626 3.508 3.394 3.282 3.173 3.067 2.965 2.865 2.768 2.673 2.582 2.493 2.408 2.324 2.244 2.166 2.09 2.017 1.946 1.878 1.812 1.748 1.686 1.627 1.569 1.514 1.46 1.408 1.358 1.309 1.263 1.218 1.174 1.132 1.092 1.053 1.015 0.979 0.943 0.91 0.877 0.846 0.815 0.786 0.758 0.73 0.704 0.679 0.654 0.631 0.608 0.586 0.565 0.545 0.525 0.506 0.488 0.47 0.453 0.437 0.421 0.406 0.391 0.377 0.364 0.351 0.338 0.326 0.314 0.303 0.292 0.281 0.271 0.261 0.252 0.243 0.234 0.226 0.217 0.21 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.362" PeakHeight="110.0" Num="3" Error="0.0">
-30.48 13.121 -3.153
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.362" EndFrequency="7.05" PeakHeight="223.934" Num="5" zHalfNm="154.981" Error="3.05">
-80.695 -44.855 21.952 -5.117 -0.221
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.998" Depth="0.123"/>
<TopsideChapman PeakHeight="223.934" PeakDensity="616656.3" PeakScaleHeight="42.499" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
