<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-27 -300 14:10:00.000"
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="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) 14:10:00</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">
FF202630010271410009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="7.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.832" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.389" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="390.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="390.000" 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="7.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="442.470" 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="3.380" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.356" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="273.487" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="169.621" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.500" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="116.954" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="18.932" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="68.230" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="178.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.150" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="21">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
390.000 395.000 397.500 400.000 400.000 405.000 405.000 410.000 415.000 415.000 420.000 420.000 425.000 428.693 432.786 437.350 442.470 448.253 454.839 462.406 471.192
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 0 63 63 66 63 66 66 66 69 66 66 69 69 72 69 69 69 69 60
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.485 90.0 95.0 100.0 105.0 110.0 111.59 113.181 114.771 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 273.487 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.274 2.925 3.27 3.38 3.257 3.257 3.38 3.387 3.536 3.69 3.851 4.017 4.185 4.353 4.516 4.673 4.823 4.966 5.101 5.23 5.353 5.471 5.585 5.695 5.801 5.905 6.007 6.106 6.205 6.302 6.398 6.495 6.591 6.688 6.786 6.886 6.987 7.088 7.174 7.2 7.2 7.194 7.181 7.161 7.135 7.103 7.065 7.022 6.973 6.921 6.864 6.803 6.738 6.67 6.599 6.525 6.448 6.369 6.288 6.206 6.122 6.036 5.95 5.862 5.773 5.684 5.595 5.505 5.415 5.325 5.235 5.145 5.055 4.966 4.877 4.789 4.702 4.615 4.529 4.443 4.359 4.275 4.193 4.111 4.03 3.951 3.872 3.794 3.718 3.643 3.569 3.496 3.424 3.353 3.284 3.215 3.148 3.082 3.017 2.953 2.891 2.829 2.769 2.71 2.652 2.595 2.539 2.484 2.43 2.378 2.326 2.275 2.226 2.177 2.129 2.083 2.037 1.992 1.949 1.906 1.864 1.822 1.782 1.743 1.704 1.666 1.629 1.593 1.558 1.523 1.489 1.456 1.423 1.392 1.36 1.33 1.3 1.271 1.243 1.215 1.188 1.161 1.135 1.11 1.085 1.06 1.037 1.013 0.99 0.968 0.946 0.925 0.904 0.884 0.864 0.845 0.826 0.807 0.789 0.771 0.754 0.737 0.72 0.704 0.688 0.672 0.657 0.642 0.628 0.614 0.6 0.586 0.573 0.56 0.547 0.535 0.523 0.511 0.5 0.488 0.477 0.466 0.456 0.446 0.436 0.426

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.38" PeakHeight="110.0" Num="3" Error="0.0">
-30.493 13.14 -3.162
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.38" EndFrequency="7.2" PeakHeight="273.487" Num="5" zHalfNm="169.621" Error="2.571">
-130.923 -45.469 25.778 -9.73 1.628
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.771" Depth="0.123"/>
<TopsideChapman PeakHeight="273.487" PeakDensity="643176.2" PeakScaleHeight="68.23" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
