<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 01:50:00.000"
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 55 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 20% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, 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" >
2026.03.02 (061) 01:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606103020150009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.088" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.516" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="385.014" 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="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="322.159" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="284.673" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.539" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="54.109" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.249" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.835" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="53.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.060" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 305.000 302.500 300.000 302.778 305.556 308.333 311.111 313.889 316.667 319.444 322.222 325.000 340.000 340.000 350.000 350.000 350.000 350.000 350.000 365.000 365.000 365.000 366.364 367.988 369.955 372.387 375.469 379.504 385.014 392.988 405.555
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 0 51 0 0 0 0 54 0 51 0 54 0 60 54 0 60 0 0 60 0 66 60 63 54 57 51 0 48 48 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 0.390625 0.390625 1.171875 0.390625 0.390625 1.953125 1.171875 1.171875 1.171875 0.390625 1.171875 0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -2.734375 -1.171875 -1.171875 -1.171875 0.390625 -1.171875 -1.171875 -1.953125 -1.171875 2.734375 1.171875 -2.734375 -2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="116">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 147.31 150.0 155.0 160.0 165.0 170.0 175.0 180.0 184.619 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 221.929 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 322.159 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0
</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 0.334 0.318 0.295 0.265 0.224 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.202 0.222 0.243 0.263 0.284 0.305 0.325 0.346 0.354 0.439 0.554 0.679 0.827 1.009 1.233 1.498 1.795 2.108 2.425 2.74 3.046 3.342 3.625 3.889 4.131 4.342 4.512 4.633 4.694 4.7 4.695 4.666 4.612 4.537 4.445 4.338 4.219 4.092 3.957 3.818 3.675 3.532 3.388 3.244 3.103 2.964 2.828 2.696 2.568 2.444 2.324 2.209 2.098 1.992 1.89 1.793 1.7 1.612 1.528 1.447 1.371 1.298 1.229 1.164 1.102 1.043 0.987 0.934 0.883 0.836 0.791 0.748 0.707 0.669 0.633 0.598 0.566 0.535 0.506 0.479 0.453 0.428 0.405 0.383 0.362 0.342 0.323 0.306 0.289 0.273 0.258 0.244 0.231 0.218 0.207

</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="4.7" PeakHeight="322.159" Num="5" zHalfNm="284.673" Error="3.271">
-100.621 -0.741 1.249 -1.561 1.444
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="111.929" Depth="0.154"/>
<TopsideChapman PeakHeight="322.159" PeakDensity="274069.47" PeakScaleHeight="27.835" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
