<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 07:10:00.000"
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="12.0">
<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 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.20 (293) 07:10:00</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">
FF202629310200710009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.294" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.752" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="298.741" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="298.741" 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="5.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="317.485" 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="5.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="300.178" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="266.939" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.047" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="48.040" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.224" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="25.174" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="46.520" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.270" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
298.741 299.804 300.974 302.268 303.708 305.320 307.136 309.198 311.560 314.291 317.485 321.273 325.836 330.000 340.000 350.000 360.000 375.000 405.000 449.779
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 2.734375 1.171875 0.390625 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 -2.734375 0.390625 2.734375 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="110">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.676 145.0 150.0 155.0 160.0 165.0 170.0 175.0 175.351 180.0 185.0 190.0 195.0 200.0 205.0 208.027 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 300.178 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0
</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 0.328 0.306 0.275 0.231 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.222 0.245 0.269 0.293 0.316 0.34 0.354 0.397 0.534 0.712 0.931 1.191 1.494 1.847 2.252 2.707 3.206 3.73 4.256 4.756 5.207 5.59 5.896 6.118 6.253 6.3 6.3 6.278 6.214 6.113 5.982 5.827 5.651 5.461 5.26 5.052 4.84 4.627 4.414 4.203 3.997 3.795 3.599 3.41 3.228 3.053 2.885 2.724 2.572 2.426 2.288 2.157 2.032 1.914 1.803 1.697 1.598 1.504 1.415 1.331 1.252 1.178 1.108 1.042 0.98 0.921 0.866 0.815 0.766 0.72 0.677 0.636 0.598 0.562 0.528 0.497 0.467 0.439 0.412 0.388 0.364 0.342 0.322 0.303 0.284 0.267 0.251 0.236 0.222 0.209

</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="6.3" PeakHeight="300.178" Num="5" zHalfNm="266.939" Error="1.68">
-93.999 3.382 -2.288 1.239 -0.485
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="98.027" Depth="0.154"/>
<TopsideChapman PeakHeight="300.178" PeakDensity="492431.75" PeakScaleHeight="25.174" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
