<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-27 -300 18:20:00.000"
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" >
2026.10.27 (300) 18:20:00</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">
FF202630010271820009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.042" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.600" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.500" Name="fxI" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="395.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.837" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="274.972" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="200.858" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.237" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="80.448" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="14.142" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.998" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="138.630" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="44">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 330.000 330.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 399.178 404.369 410.992
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 75 75 72 75 69 72 72 69 72 72 69 72 75 72 72 72 72 69 72 75 69 69 72 72 69 72 69 69 69 72 69 72 75 69 72 72 69 75 66 72 60 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 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="173">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.574 90.0 95.0 100.0 105.0 110.0 113.959 115.0 117.917 120.0 121.876 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 274.972 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.907 2.456 2.745 2.837 2.715 2.715 2.715 2.779 2.837 2.953 3.142 3.321 3.486 3.639 3.782 3.918 4.047 4.173 4.295 4.414 4.532 4.649 4.766 4.883 5.0 5.119 5.239 5.361 5.485 5.613 5.745 5.882 6.023 6.172 6.328 6.493 6.667 6.848 7.017 7.1 7.1 7.093 7.073 7.041 6.998 6.945 6.882 6.81 6.731 6.645 6.553 6.455 6.352 6.246 6.135 6.022 5.906 5.789 5.67 5.55 5.429 5.308 5.186 5.065 4.945 4.825 4.707 4.589 4.473 4.358 4.245 4.134 4.024 3.916 3.81 3.706 3.605 3.505 3.407 3.312 3.218 3.127 3.038 2.951 2.866 2.783 2.702 2.624 2.547 2.473 2.4 2.329 2.26 2.193 2.128 2.065 2.003 1.943 1.885 1.829 1.774 1.72 1.669 1.618 1.569 1.522 1.476 1.431 1.388 1.346 1.305 1.265 1.227 1.189 1.153 1.118 1.084 1.051 1.019 0.988 0.957 0.928 0.9 0.872 0.846 0.82 0.795 0.77 0.747 0.724 0.702 0.68 0.659 0.639 0.619 0.6 0.582 0.564 0.547 0.53 0.514 0.498 0.483 0.468 0.453 0.439 0.426 0.413 0.4 0.388 0.376 0.364 0.353 0.342 0.332 0.322 0.312 0.302 0.293 0.284 0.275 0.267 0.258 0.251 0.243 0.235 0.228 0.221 0.214 0.208 0.201

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.837" PeakHeight="110.0" Num="3" Error="0.0">
-30.053 12.495 -2.868
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.837" EndFrequency="7.1" PeakHeight="274.972" Num="5" zHalfNm="200.858" Error="2.714">
-115.774 -55.825 19.986 -0.271 -1.212
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.876" Depth="0.122"/>
<TopsideChapman PeakHeight="274.972" PeakDensity="625434.25" PeakScaleHeight="49.998" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
