<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 11:40:00.000"
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 1 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" >
2026.10.23 (296) 11:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629610231140009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="30" >
<URSI ID="00" Val="7.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="10" Val="6.673" Name="foF1" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.896" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.012" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="385.000" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="425.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.025" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="3.029" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.188" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="267.425" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="91" Val="226.363" Name="hmF1" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="172.279" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.971" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="57.115" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="95" Val="90.122" Name="yF1" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="19.366" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="62.567" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="126.820" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.430" Name="B1" QL="/" DL="/" />
<URSI ID="D2" Val="0.230" Name="D1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
385.000 385.000 385.000 390.000 395.000 395.000 400.000 400.000 405.000 410.000 415.000 415.000 420.000 425.000 425.000 431.168 438.268 446.526 456.254
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 69 78 75 69 78 75 75 75 66 63 75 72 60 63 63 48 0 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 -1.953125 1.953125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="F1" Polarization="O" Num="6">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.4 6.45 6.5 6.55 6.6 6.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 360.000 365.000 370.000 380.000 380.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 69 72 57 57
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="189">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.541 90.0 95.0 100.0 105.0 110.0 113.086 115.0 116.173 119.259 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 226.363 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 267.425 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.036 2.622 2.931 3.029 2.907 2.907 2.907 3.029 3.067 3.294 3.509 3.73 3.961 4.201 4.444 4.68 4.904 5.113 5.307 5.489 5.659 5.818 5.969 6.11 6.243 6.367 6.478 6.571 6.639 6.671 6.673 6.822 6.938 7.048 7.162 7.282 7.397 7.503 7.599 7.625 7.624 7.614 7.596 7.57 7.535 7.494 7.446 7.391 7.33 7.264 7.193 7.117 7.038 6.954 6.867 6.777 6.685 6.59 6.493 6.394 6.294 6.193 6.091 5.988 5.884 5.78 5.676 5.572 5.468 5.365 5.262 5.159 5.058 4.957 4.856 4.757 4.659 4.562 4.466 4.372 4.278 4.186 4.095 4.006 3.918 3.832 3.747 3.663 3.581 3.5 3.421 3.343 3.266 3.191 3.118 3.046 2.975 2.906 2.838 2.772 2.707 2.643 2.581 2.52 2.46 2.402 2.345 2.289 2.235 2.181 2.129 2.078 2.028 1.979 1.932 1.885 1.84 1.795 1.752 1.71 1.668 1.628 1.588 1.55 1.512 1.475 1.439 1.404 1.37 1.337 1.304 1.272 1.241 1.211 1.181 1.152 1.124 1.097 1.07 1.044 1.018 0.993 0.969 0.945 0.922 0.899 0.877 0.856 0.835 0.814 0.794 0.775 0.756 0.737 0.719 0.701 0.684 0.667 0.651 0.635 0.619 0.604 0.589 0.575 0.56 0.547 0.533 0.52 0.507 0.495 0.483 0.471 0.459 0.448 0.437 0.426 0.415 0.405 0.395 0.386 0.376 0.367 0.358 0.349 0.34 0.332 0.324

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="3" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.029" PeakHeight="110.0" Num="3" Error="0.0">
-30.219 12.738 -2.978
</ShiftedChebyshev>
<ShiftedChebyshev Region="F1" StartFrequency="3.029" EndFrequency="6.673" PeakHeight="226.363" Num="5" Error="0.0">
-100.795 -10.789 6.985 -3.83 1.325
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="6.673" EndFrequency="7.625" PeakHeight="267.425" Num="5" zHalfNm="172.279" Error="2.376">
-31.085 -13.586 3.244 -0.48 0.845
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.259" Depth="0.122"/>
<TopsideChapman PeakHeight="267.425" PeakDensity="721347.7" PeakScaleHeight="62.567" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
