<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 05:00:00.000"
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 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Severe F-spread, F2x cusp not found, 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" >
2026.10.15 (288) 05:00:00</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">
FF202628810150500009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="5.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.980" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.283" 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="6.350" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="370.782" 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="0.354" 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="345.166" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="297.433" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.236" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="68.608" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.349" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="36.331" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="64.860" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.530" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 330.000 335.000 335.000 337.500 340.000 340.000 340.000 345.000 348.104 351.573 355.475 359.898 364.951 370.782 377.583 385.619 395.261 407.043 421.767 440.690 465.910 501.195 554.074
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 78 78 78 0 81 75 0 78 81 84 75 0 78 60 66 0 0 0 0 0 0 69 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 -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 -1.171875 -0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="145">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.618 150.0 155.0 160.0 165.0 170.0 175.0 180.0 183.235 185.0 190.0 195.0 200.0 205.0 210.0 215.0 219.853 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 345.166 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.333 0.316 0.293 0.261 0.217 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.207 0.228 0.249 0.271 0.292 0.313 0.334 0.354 0.356 0.443 0.549 0.674 0.815 0.975 1.154 1.356 1.584 1.841 2.13 2.451 2.801 3.173 3.553 3.926 4.279 4.601 4.886 5.132 5.339 5.506 5.634 5.726 5.781 5.8 5.8 5.79 5.761 5.714 5.651 5.574 5.485 5.385 5.276 5.16 5.038 4.911 4.781 4.647 4.512 4.376 4.24 4.104 3.969 3.836 3.704 3.574 3.447 3.323 3.201 3.082 2.967 2.855 2.746 2.64 2.537 2.438 2.342 2.249 2.16 2.074 1.99 1.91 1.833 1.759 1.687 1.618 1.552 1.488 1.427 1.368 1.312 1.258 1.205 1.155 1.108 1.061 1.017 0.975 0.934 0.895 0.858 0.822 0.788 0.755 0.723 0.693 0.664 0.636 0.609 0.584 0.559 0.536 0.513 0.492 0.471 0.451 0.432 0.414 0.397 0.38 0.364 0.349 0.334 0.32 0.307 0.294 0.281 0.27 0.258 0.247 0.237 0.227 0.217 0.208

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="5.8" PeakHeight="345.166" Num="5" zHalfNm="297.433" Error="3.722">
-130.551 9.3 -6.481 3.387 -0.968
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="109.853" Depth="0.154"/>
<TopsideChapman PeakHeight="345.166" PeakDensity="417369.72" PeakScaleHeight="36.331" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
