<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 22:30:00.000"
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="15.0">
<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 44 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Severe F-spread, F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match</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" >
2026.10.14 (287) 22:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202628710142230009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.187" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.212" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="5.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="356.026" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="312.651" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.499" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.180" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="53.765" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.287" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.967" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="52.860" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.140" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="22">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.35 4.4 4.45 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 331.667 333.333 335.000 335.000 337.500 340.000 342.500 345.915 350.273 356.026 363.973 375.665 394.562 430.294
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 66 0 0 0 72 66 69 0 63 66 0 0 66 69 69 0 0 60 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.171875 0.390625 1.953125 1.171875 0.390625 -0.390625 0.390625 1.171875 -0.390625 0.390625 1.171875 0.390625 1.953125 1.171875 1.171875 1.171875 0.390625 1.953125 1.953125 -0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="117">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.505 145.0 150.0 155.0 160.0 165.0 170.0 175.0 177.011 180.0 185.0 190.0 195.0 200.0 205.0 210.0 210.516 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 312.651 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.329 0.308 0.279 0.238 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.237 0.26 0.283 0.306 0.329 0.352 0.354 0.442 0.566 0.721 0.908 1.128 1.38 1.664 1.976 2.313 2.67 3.04 3.414 3.782 4.135 4.462 4.753 4.998 5.19 5.322 5.391 5.4 5.396 5.366 5.307 5.224 5.12 5.0 4.866 4.721 4.568 4.41 4.247 4.083 3.918 3.754 3.592 3.433 3.277 3.125 2.977 2.834 2.697 2.564 2.436 2.314 2.196 2.084 1.977 1.875 1.777 1.684 1.596 1.512 1.432 1.356 1.284 1.216 1.151 1.089 1.031 0.975 0.923 0.873 0.826 0.782 0.74 0.7 0.662 0.626 0.592 0.56 0.53 0.501 0.474 0.448 0.424 0.401 0.379 0.359 0.339 0.321 0.303 0.287 0.271 0.257 0.243 0.23 0.217 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="5.4" PeakHeight="312.651" Num="5" zHalfNm="275.499" Error="0.703">
-103.041 1.505 -0.447 -0.069 -0.083
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="100.516" Depth="0.154"/>
<TopsideChapman PeakHeight="312.651" PeakDensity="361786.6" PeakScaleHeight="27.967" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
