<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 05:30:00.000"
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="14.0">
<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 55 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 20% PACIFIC flags: Moderate F-spread, F2o cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Trace overlaps while constructing baseline</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" >
2026.11.02 (306) 05:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630611020530009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.097" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.452" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="370.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="344.612" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="304.401" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.255" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="59.056" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="8.387" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="30.003" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="60.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.820" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="56">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 305.000 310.000 323.333 336.667 350.000 353.333 356.667 345.000 345.000 345.000 345.000 342.500 340.000 342.500 345.000 350.000 345.000 347.500 350.000 360.000 360.000 360.000 360.000 360.000 360.000 356.667 353.333 350.000 351.786 353.571 355.357 357.143 358.929 360.714 362.500 364.286 366.071 367.857 369.643 371.429 373.214 375.000 375.000 375.000 375.000 380.000 376.667 373.333 370.000 410.000 420.000 425.000 430.000 430.000 430.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 66 0 0 57 0 0 0 0 0 0 0 66 69 72 66 60 0 0 0 0 0 0 0 60 0 0 66 0 66 0 0 0 0 60 66 60 0 0 0 57 60 0 60 60 69 69 0 63 57 57 51 54 0 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 -0.390625 1.171875 -1.171875 -1.171875 -1.171875 1.171875 1.953125 1.171875 1.171875 1.171875 -1.171875 1.171875 -1.171875 1.171875 -1.171875 -1.171875 1.171875 1.171875 1.953125 1.953125 1.953125 1.171875 0.390625 1.171875 0.390625 -1.171875 0.390625 0.390625 1.171875 1.953125 1.171875 1.953125 1.171875 1.171875 1.171875 1.171875 -0.390625 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 -0.390625 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="134">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 145.901 150.0 155.0 160.0 165.0 170.0 175.0 180.0 181.803 185.0 190.0 195.0 200.0 205.0 210.0 215.0 217.704 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 344.612 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0
</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 0.314 0.29 0.256 0.21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.235 0.257 0.278 0.3 0.321 0.342 0.354 0.403 0.514 0.641 0.789 0.963 1.165 1.396 1.654 1.938 2.244 2.57 2.912 3.268 3.635 4.013 4.397 4.785 5.173 5.556 5.928 6.279 6.598 6.87 7.079 7.21 7.25 7.25 7.228 7.171 7.084 6.97 6.834 6.679 6.509 6.327 6.135 5.937 5.734 5.528 5.322 5.117 4.913 4.712 4.514 4.321 4.133 3.95 3.772 3.601 3.435 3.275 3.121 2.974 2.832 2.696 2.566 2.442 2.323 2.209 2.101 1.998 1.899 1.805 1.715 1.63 1.549 1.471 1.398 1.328 1.261 1.198 1.138 1.08 1.026 0.974 0.925 0.878 0.834 0.792 0.752 0.714 0.678 0.643 0.611 0.58 0.551 0.523 0.496 0.471 0.447 0.425 0.403 0.383 0.363 0.345 0.327 0.311 0.295 0.28 0.266 0.252 0.24 0.227 0.216 0.205

</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="7.25" PeakHeight="344.612" Num="5" zHalfNm="304.401" Error="2.229">
-123.446 -7.398 5.515 -2.438 0.859
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="107.704" Depth="0.154"/>
<TopsideChapman PeakHeight="344.612" PeakDensity="652140.2" PeakScaleHeight="30.003" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
