<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 08:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.03.09 (068) 08:40:00</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">
FF202606803090840009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="4.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.384" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.045" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="3.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="301.328" 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="0.629" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="1.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="1.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="273.576" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="225.974" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.484" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="67.790" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.259" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="36.857" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="56.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.180" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="45">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 235.000 232.500 230.000 235.000 236.250 237.500 238.750 240.000 241.250 242.500 243.750 245.000 245.000 246.000 247.000 248.000 249.000 250.000 250.000 252.500 255.000 255.000 255.000 255.000 255.000 255.000 260.000 265.000 265.000 265.000 270.000 275.000 275.000 278.731 283.049 288.102 294.098 301.328 310.214 321.400 335.913 355.495 383.363 426.190
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 57 72 0 0 0 0 0 0 0 57 54 0 0 0 0 57 60 0 54 54 0 0 0 0 69 69 75 72 75 75 75 75 72 66 57 60 48 0 0 0 48 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 0.390625 0.390625 0.390625 0.390625 -2.734375 0.390625 0.390625 -0.390625 -0.390625 1.953125 1.171875 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 -2.734375 2.734375 0.390625 0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="125">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.993 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 136.097 140.0 145.0 150.0 155.0 160.0 162.195 165.0 170.0 175.0 180.0 185.0 188.292 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 273.576 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.417 0.545 0.609 0.629 0.62 0.593 0.544 0.467 0.341 0.301 0.301 0.301 0.301 0.301 0.301 0.301 0.336 0.399 0.462 0.525 0.588 0.629 0.666 0.813 1.032 1.315 1.652 2.042 2.466 2.864 3.193 3.45 3.649 3.804 3.923 4.013 4.078 4.122 4.145 4.15 4.149 4.138 4.114 4.077 4.03 3.973 3.909 3.837 3.759 3.676 3.59 3.5 3.407 3.313 3.217 3.121 3.025 2.93 2.834 2.74 2.648 2.556 2.466 2.379 2.293 2.209 2.128 2.048 1.971 1.896 1.824 1.753 1.686 1.62 1.556 1.495 1.436 1.379 1.324 1.271 1.22 1.171 1.124 1.078 1.035 0.993 0.952 0.913 0.876 0.84 0.806 0.773 0.741 0.711 0.682 0.654 0.627 0.601 0.576 0.552 0.53 0.508 0.487 0.467 0.447 0.429 0.411 0.394 0.378 0.362 0.347 0.333 0.319 0.306 0.293 0.281 0.269 0.258 0.248 0.237 0.227 0.218 0.209 0.2

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.629" PeakHeight="110.0" Num="3" Error="0.0">
-23.987 5.615 -0.635
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.629" EndFrequency="4.15" PeakHeight="273.576" Num="5" zHalfNm="225.974" Error="2.058">
-101.333 25.56 -11.837 3.442 -1.116
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="78.292" Depth="0.328"/>
<TopsideChapman PeakHeight="273.576" PeakDensity="213678.66" PeakScaleHeight="36.857" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
