<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 08:20:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: 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" >
2026.03.03 (062) 08:20:00</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">
FF202606203030820009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="4.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.326" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.635" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="3.050" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="105.000" Name="h`Es" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="306.436" 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="0.392" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="287.245" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="244.974" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.857" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.300" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="60.136" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.257" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="32.893" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="49.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.450" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.900" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 260.000 261.000 262.000 263.000 264.000 265.000 270.000 270.000 270.000 275.000 276.667 278.333 280.000 280.000 280.000 281.250 283.566 286.174 289.134 292.521 296.437 301.014 306.436 312.961 320.963 331.007 343.991 361.425 386.070 423.568
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 69 0 0 0 0 72 66 0 72 57 48 0 69 78 78 0 0 0 0 63 57 66 63 0 63 0 63 54 60 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 -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 1.953125 0.390625 0.390625 -0.390625 0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
110.000 105.000 105.000 105.000 105.000 105.000 105.000 106.667 108.333 110.000 110.000 110.000 110.000 110.000 107.500 105.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 72 0 0 0 0 0 0 0 0 66 0 0 66 0 66
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 -0.390625 0.390625 1.171875 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 0.390625 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="120">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.795 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.433 140.0 145.0 150.0 155.0 160.0 165.0 168.866 170.0 175.0 180.0 185.0 190.0 195.0 198.299 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 287.245 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.259 0.34 0.38 0.392 0.388 0.375 0.352 0.318 0.267 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.207 0.24 0.273 0.305 0.338 0.37 0.392 0.42 0.548 0.745 0.966 1.204 1.474 1.796 2.192 2.657 3.113 3.484 3.763 3.972 4.127 4.242 4.322 4.373 4.397 4.4 4.397 4.377 4.341 4.289 4.225 4.149 4.064 3.971 3.871 3.766 3.658 3.547 3.434 3.32 3.206 3.092 2.979 2.868 2.758 2.651 2.546 2.443 2.344 2.247 2.153 2.062 1.974 1.89 1.808 1.729 1.654 1.581 1.511 1.444 1.379 1.318 1.258 1.202 1.147 1.095 1.046 0.998 0.953 0.909 0.868 0.828 0.79 0.754 0.719 0.686 0.655 0.624 0.596 0.568 0.542 0.517 0.493 0.47 0.449 0.428 0.408 0.389 0.371 0.354 0.338 0.322 0.307 0.293 0.279 0.266 0.254 0.242 0.231 0.22 0.21 0.2

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.392" PeakHeight="110.0" Num="3" Error="0.0">
-19.995 2.995 -0.205
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.392" EndFrequency="4.4" PeakHeight="287.245" Num="5" zHalfNm="244.974" Error="2.115">
-102.221 21.932 -12.395 6.024 -2.286
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="88.299" Depth="0.192"/>
<TopsideChapman PeakHeight="287.245" PeakDensity="240198.52" PeakScaleHeight="32.893" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
