<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-08 -039 07:00:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2</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" >
2026.02.08 (039) 07:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" 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">
FF202603902080700009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.389" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.110" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" 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="0.550" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="332.303" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="285.384" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.677" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.199" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="43.291" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.451" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.154" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="42.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.150" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="123">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.9 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 4.2 4.25 4.3 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 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 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 245.000 244.000 243.000 242.000 241.000 240.000 240.000 241.250 242.500 243.750 245.000 245.000 245.333 245.667 246.000 246.333 246.667 247.000 247.333 247.667 248.000 248.333 248.667 249.000 249.333 249.667 250.000 250.000 255.000 255.000 255.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 267.500 270.000 265.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 277.500 280.000 280.000 280.000 280.000 280.000 282.500 285.000 285.000 285.000 285.000 290.000 290.000 290.000 290.000 290.000 292.500 295.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 305.000 310.000 310.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 330.000 330.000 330.880 332.303 335.000 342.060 408.934
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 66 0 0 0 0 0 66 63 0 0 0 72 75 0 0 0 0 0 0 0 0 0 60 0 0 0 0 78 75 75 0 51 0 75 75 63 0 0 0 63 63 63 0 0 75 60 0 66 66 72 48 72 72 0 57 60 63 63 66 69 0 69 72 57 60 0 63 66 0 66 0 0 0 60 0 69 0 72 57 72 0 66 69 51 72 60 63 66 66 69 60 63 69 69 72 60 63 69 69 72 63 69 72 72 69 69 72 63 69 72 66 69 72 69 72 66 72 72 72 69 72 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 -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 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 -2.734375 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 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="103">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.333 145.0 150.0 155.0 160.0 165.0 170.0 170.667 175.0 180.0 185.0 190.0 195.0 200.0 201.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 285.384 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.323 0.297 0.26 0.205 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.222 0.247 0.273 0.298 0.324 0.349 0.354 0.488 0.68 0.934 1.283 1.745 2.307 2.933 3.591 4.259 4.923 5.571 6.189 6.757 7.252 7.643 7.901 7.999 8.0 7.968 7.866 7.708 7.503 7.261 6.993 6.705 6.405 6.099 5.791 5.485 5.184 4.89 4.606 4.332 4.069 3.819 3.58 3.354 3.14 2.938 2.747 2.568 2.399 2.241 2.092 1.953 1.823 1.701 1.587 1.48 1.38 1.287 1.2 1.119 1.044 0.973 0.907 0.845 0.788 0.735 0.685 0.638 0.595 0.554 0.517 0.482 0.449 0.418 0.39 0.363 0.339 0.316 0.294 0.274 0.255 0.238 0.222 0.207

</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="8.0" PeakHeight="285.384" Num="5" zHalfNm="255.677" Error="1.318">
-86.358 1.847 0.76 -1.5 0.867
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="91.0" Depth="0.154"/>
<TopsideChapman PeakHeight="285.384" PeakDensity="794044.7" PeakScaleHeight="22.154" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
