<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 08:30:00.000"
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="15.0">
<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 33 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Moderate F-spread, F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</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" >
2026.10.14 (287) 08:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202628710140830009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.471" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.523" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="270.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="270.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="301.376" 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="0.908" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="263.194" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="225.033" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.818" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="54.161" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.868" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="28.451" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="56.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.840" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="32">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
270.000 270.000 270.000 275.000 280.000 282.500 285.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 292.030 294.488 297.526 301.376 306.416 313.296 323.249 338.926 367.261 433.958
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 0 72 0 60 60 66 0 0 69 0 0 0 0 72 75 63 63 78 72 66 63 0 60 0 60 51 51 51 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.171875 1.171875 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 1.171875 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="111">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.382 95.0 100.0 105.0 110.0 115.0 120.0 125.0 129.592 130.0 135.0 140.0 145.0 149.184 150.0 155.0 160.0 165.0 168.776 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 263.194 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.604 0.787 0.879 0.908 0.893 0.846 0.763 0.642 0.642 0.642 0.642 0.642 0.642 0.653 0.721 0.789 0.857 0.908 0.955 1.159 1.389 1.649 1.937 2.249 2.582 2.93 3.288 3.653 4.019 4.382 4.737 5.077 5.394 5.677 5.912 6.085 6.182 6.2 6.198 6.167 6.105 6.015 5.902 5.77 5.621 5.46 5.29 5.112 4.93 4.745 4.559 4.373 4.19 4.008 3.831 3.658 3.489 3.326 3.167 3.015 2.868 2.727 2.591 2.462 2.338 2.219 2.106 1.998 1.895 1.797 1.704 1.615 1.531 1.451 1.375 1.303 1.234 1.169 1.107 1.049 0.993 0.941 0.891 0.844 0.799 0.756 0.716 0.678 0.642 0.608 0.575 0.545 0.516 0.488 0.462 0.438 0.414 0.392 0.371 0.351 0.333 0.315 0.298 0.282 0.267 0.253 0.239 0.227 0.214 0.203

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.908" PeakHeight="110.0" Num="3" Error="0.0">
-26.06 7.54 -1.098
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.908" EndFrequency="6.2" PeakHeight="263.194" Num="5" zHalfNm="225.033" Error="1.773">
-91.369 -4.919 2.655 -1.034 0.249
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="58.776" Depth="0.266"/>
<TopsideChapman PeakHeight="263.194" PeakDensity="476923.06" PeakScaleHeight="28.451" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
