<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 08:10:00.000"
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="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 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Severe F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2</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) 08:10:00</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">
FF202607303140810009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.322" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.912" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="0.750" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="325.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="321.428" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="290.730" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.586" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="46.165" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.046" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.922" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="51.530" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="70">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 326.250 327.500 328.750 330.000 330.000 330.556 331.111 331.667 332.222 332.778 333.333 333.889 334.444 335.000 335.000 335.000 337.857 340.714 343.571 346.429 349.286 352.143 355.000 355.000 355.000 355.000 355.000 352.500 350.000 347.500 345.000 342.500 340.000 337.500 335.000 332.500 330.000 332.500 335.000 335.000 335.000 335.000 335.000 340.000 337.500 335.000 335.000 332.500 330.000 327.500 325.000 315.000 310.000 310.000 310.000 310.000 315.000 320.000 325.000 325.000 325.000 331.607 339.772 350.122 363.667 382.158 408.910 451.048
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 0 63 66 63 69 63 60 63 0 0 0 0 63 0 66 63 0 0 0 0 0 0 57 57 0 51 57 57 0 57 0 60 0 60 63 63 0 57 60 63 60 57 57 0 57 60 60 60 0 57 54 57 60 57 51 57 51 54 60 60 57 0 54 54 0 0 0 0
</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 1.953125 1.171875 1.171875 0.390625 0.390625 1.171875 1.171875 0.390625 0.390625 -0.390625 0.390625 0.390625 1.953125 1.953125 1.171875 1.953125 1.953125 1.953125 1.171875 1.953125 1.171875 0.390625 0.390625 1.953125 0.390625 0.390625 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875 1.953125 1.171875 1.171875 2.734375 1.171875 1.953125 2.734375 0.390625 1.953125 1.953125 1.953125 1.953125 1.171875 1.171875 1.953125 1.953125 1.171875 1.953125 1.953125 1.171875 1.953125 1.953125 2.734375 2.734375 2.734375 -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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.314 145.0 150.0 155.0 160.0 165.0 170.0 170.629 175.0 180.0 185.0 190.0 195.0 200.0 200.943 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 321.428 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.323 0.297 0.259 0.204 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.222 0.248 0.273 0.298 0.324 0.349 0.354 0.411 0.515 0.668 0.868 1.096 1.338 1.589 1.85 2.121 2.404 2.7 3.009 3.335 3.678 4.039 4.419 4.82 5.24 5.678 6.128 6.575 6.99 7.321 7.491 7.5 7.483 7.406 7.276 7.102 6.894 6.659 6.405 6.137 5.862 5.583 5.304 5.029 4.758 4.495 4.24 3.995 3.76 3.535 3.321 3.118 2.925 2.742 2.57 2.408 2.255 2.111 1.975 1.848 1.729 1.617 1.512 1.414 1.322 1.236 1.155 1.08 1.009 0.943 0.881 0.823 0.769 0.719 0.671 0.627 0.586 0.548 0.512 0.478 0.446 0.417 0.39 0.364 0.34 0.318 0.297 0.277 0.259 0.242 0.226 0.211

</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="7.5" PeakHeight="321.428" Num="5" zHalfNm="290.73" Error="4.748">
-107.914 -20.634 12.791 -4.311 -0.417
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="90.943" Depth="0.154"/>
<TopsideChapman PeakHeight="321.428" PeakDensity="697890.8" PeakScaleHeight="22.922" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
