<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 09:30:00.000"
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="18.0">
<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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2, Trace overlaps while constructing baseline</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" >
2026.03.14 (073) 09:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607303140930009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.509" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.724" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="302.388" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.665" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="256.381" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="223.946" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.210" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="45.463" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.017" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="25.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="59.070" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="102">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 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 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 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 252.500 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 267.500 270.000 272.500 275.000 277.500 280.000 282.500 285.000 287.500 290.000 292.500 280.000 280.000 280.000 280.000 282.500 285.000 287.500 290.000 290.000 290.000 290.000 290.000 290.000 290.000 292.500 295.000 295.729 296.587 297.612 298.860 300.410 302.388 305.000 308.608 313.915 322.493 338.713 380.990
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 0 60 60 60 63 63 66 66 66 66 66 66 66 63 63 0 66 60 66 60 0 0 0 54 0 69 66 0 0 69 72 0 54 72 69 75 60 69 0 69 75 75 72 72 81 0 0 84 78 0 0 78 75 81 84 81 81 78 69 0 87 0 0 0 0 69 0 0 0 0 0 0 69 81 0 75 0 0 66 60 84 81 87 78 72 72 69 75 78 81 87 90 81 81 87 78 69 0 63 66
</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 -2.734375 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 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 1.171875 1.171875 0.390625 0.390625 0.390625 1.171875 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="107">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.868 90.0 95.0 100.0 105.0 110.0 115.0 120.0 120.173 125.0 130.0 130.345 135.0 140.0 140.518 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 256.381 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.211 1.114 1.442 1.611 1.665 1.632 1.529 1.524 1.524 1.524 1.524 1.589 1.658 1.665 1.855 2.023 2.178 2.331 2.485 2.645 2.812 2.989 3.18 3.387 3.613 3.864 4.144 4.461 4.82 5.228 5.687 6.183 6.687 7.152 7.527 7.781 7.894 7.9 7.885 7.819 7.706 7.555 7.371 7.162 6.933 6.689 6.435 6.175 5.912 5.649 5.387 5.13 4.878 4.633 4.396 4.166 3.945 3.733 3.53 3.336 3.151 2.975 2.808 2.649 2.498 2.355 2.22 2.092 1.971 1.857 1.749 1.647 1.551 1.46 1.375 1.294 1.218 1.147 1.079 1.016 0.956 0.899 0.846 0.796 0.749 0.705 0.663 0.624 0.587 0.553 0.52 0.489 0.46 0.433 0.407 0.383 0.361 0.339 0.319 0.3 0.282 0.266 0.25 0.235 0.221 0.208

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.665" PeakHeight="110.0" Num="3" Error="0.0">
-28.485 10.345 -1.992
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.665" EndFrequency="7.9" PeakHeight="256.381" Num="5" zHalfNm="223.946" Error="3.054">
-88.913 -29.275 -1.925 3.663 0.587
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="30.518" Depth="0.141"/>
<TopsideChapman PeakHeight="256.381" PeakDensity="774317.6" PeakScaleHeight="25.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
