<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 15:40:00.000"
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 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.10.26 (299) 15:40:00</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">
FF202629910261540009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.207" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.968" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="365.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="365.000" 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="6.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="372.303" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.355" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.344" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="230.136" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="151.793" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.160" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="90.067" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.078" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="51.997" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="134.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.200" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="11">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
365.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.880 372.303 375.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 0 0 75 72 63 0 66 0 63
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="168">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.489 90.0 95.0 100.0 105.0 110.0 111.696 113.393 115.0 115.089 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 230.136 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.257 2.903 3.246 3.355 3.232 3.232 3.349 3.355 3.557 3.747 3.94 4.144 4.356 4.569 4.774 4.964 5.14 5.301 5.45 5.589 5.72 5.845 5.965 6.082 6.196 6.309 6.421 6.536 6.652 6.77 6.85 6.85 6.844 6.827 6.799 6.76 6.713 6.656 6.592 6.521 6.443 6.36 6.271 6.178 6.081 5.98 5.877 5.771 5.663 5.553 5.443 5.331 5.219 5.106 4.994 4.882 4.77 4.659 4.549 4.44 4.332 4.225 4.12 4.016 3.914 3.813 3.714 3.617 3.522 3.429 3.337 3.247 3.159 3.074 2.99 2.907 2.827 2.749 2.672 2.598 2.525 2.454 2.385 2.317 2.252 2.188 2.125 2.065 2.006 1.948 1.892 1.838 1.785 1.733 1.683 1.634 1.587 1.541 1.496 1.452 1.41 1.369 1.329 1.29 1.253 1.216 1.18 1.146 1.112 1.08 1.048 1.017 0.987 0.958 0.93 0.903 0.876 0.85 0.825 0.801 0.777 0.755 0.732 0.711 0.69 0.669 0.65 0.63 0.612 0.594 0.576 0.559 0.543 0.527 0.511 0.496 0.481 0.467 0.453 0.44 0.427 0.414 0.402 0.39 0.379 0.367 0.357 0.346 0.336 0.326 0.316 0.307 0.298 0.289 0.28 0.272 0.264 0.256 0.249 0.241 0.234 0.227 0.221 0.214 0.208 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.355" PeakHeight="110.0" Num="3" Error="0.0">
-30.475 13.114 -3.15
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.355" EndFrequency="6.85" PeakHeight="230.136" Num="5" zHalfNm="151.793" Error="4.776">
-95.668 -32.118 19.327 -8.984 2.396
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.089" Depth="0.123"/>
<TopsideChapman PeakHeight="230.136" PeakDensity="582165.0" PeakScaleHeight="51.997" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
