<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 23:40:00.000"
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="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, F2o cusp not found, Multiple candidates for F2x 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) 23:40:00</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">
FF202628710142340009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="6.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.165" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.680" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="357.381" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="326.866" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="290.218" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.681" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="53.499" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.796" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.404" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="53.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.990" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 355.000 354.706 354.412 354.118 353.824 353.529 353.235 352.941 352.647 352.353 352.059 351.765 351.471 351.176 350.882 350.588 350.294 350.000 350.934 352.057 353.433 355.157 357.381 360.361 364.557 370.909 381.650 403.732 475.206
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 60 0 0 60 0 0 66 0 60 63 66 72 0 0 72 0 0 69 0 69 69 63 0 0 54 54 54 0 57 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 -2.734375 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 -1.953125 0.390625 0.390625 0.390625 1.171875 0.390625 1.953125 -0.390625 0.390625 0.390625 0.390625 1.953125 1.171875 -0.390625 1.171875 1.171875 -0.390625 1.171875 -1.953125 0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="123">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 145.768 150.0 155.0 160.0 165.0 170.0 175.0 180.0 181.537 185.0 190.0 195.0 200.0 205.0 210.0 215.0 217.305 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 326.866 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.344 0.332 0.314 0.289 0.255 0.209 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.215 0.236 0.258 0.279 0.301 0.323 0.344 0.354 0.406 0.519 0.66 0.835 1.051 1.308 1.607 1.943 2.308 2.698 3.107 3.53 3.96 4.394 4.825 5.245 5.643 6.008 6.326 6.581 6.758 6.843 6.85 6.841 6.795 6.712 6.598 6.459 6.298 6.12 5.929 5.728 5.521 5.31 5.096 4.883 4.672 4.464 4.259 4.06 3.866 3.678 3.497 3.322 3.154 2.993 2.839 2.691 2.55 2.416 2.288 2.166 2.05 1.94 1.836 1.736 1.642 1.553 1.469 1.388 1.313 1.241 1.173 1.108 1.048 0.99 0.935 0.884 0.835 0.789 0.746 0.704 0.666 0.629 0.594 0.561 0.53 0.501 0.473 0.447 0.422 0.399 0.377 0.356 0.336 0.318 0.3 0.283 0.268 0.253 0.239 0.226 0.213 0.201

</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="6.85" PeakHeight="326.866" Num="5" zHalfNm="290.218" Error="2.081">
-108.103 -2.46 2.22 -1.71 0.492
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="107.305" Depth="0.154"/>
<TopsideChapman PeakHeight="326.866" PeakDensity="582165.0" PeakScaleHeight="27.404" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
