<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-06 -065 09:00:00.000"
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="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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</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" >
2026.03.06 (065) 09:00:00</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">
FF202606503060900009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.148" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.694" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="337.097" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.994" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="1.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="1.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="298.510" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="234.747" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.177" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="90.975" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.058" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="50.419" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="83.100" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="50">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.9 1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 265.000 265.000 260.000 260.000 260.000 260.000 260.000 265.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 275.000 280.000 285.000 285.000 290.000 300.000 305.000 305.000 305.000 305.000 305.000 305.000 310.000 311.646 313.489 315.568 317.931 320.640 323.778 327.455 331.823 337.097 343.591 351.784 362.443 376.880 397.535 429.528 485.724
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 51 63 60 0 0 63 66 60 51 0 0 0 0 66 0 0 0 63 60 0 69 66 72 66 54 57 60 63 66 63 66 69 0 72 0 63 0 66 69 0 60 63 57 63 60 66 60 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 1.171875 0.390625 0.390625 0.390625 0.390625 2.734375 0.390625 1.171875 0.390625 0.390625 0.390625 1.171875 0.390625 0.390625 1.171875 0.390625 2.734375 1.171875 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 1.953125 2.734375 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="162">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.276 95.0 100.0 105.0 110.0 115.0 120.0 125.0 127.076 130.0 135.0 140.0 144.153 145.0 150.0 155.0 160.0 161.229 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 298.51 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.662 0.861 0.962 0.994 0.977 0.926 0.833 0.78 0.78 0.78 0.78 0.78 0.791 0.853 0.916 0.979 0.994 1.084 1.201 1.316 1.431 1.546 1.664 1.785 1.912 2.045 2.188 2.342 2.508 2.688 2.882 3.086 3.292 3.489 3.667 3.82 3.95 4.057 4.144 4.213 4.267 4.306 4.333 4.347 4.35 4.35 4.343 4.329 4.308 4.28 4.246 4.206 4.162 4.113 4.059 4.003 3.943 3.88 3.814 3.747 3.678 3.608 3.536 3.463 3.39 3.317 3.243 3.17 3.096 3.023 2.95 2.878 2.807 2.736 2.667 2.598 2.53 2.464 2.398 2.334 2.271 2.209 2.148 2.089 2.031 1.974 1.919 1.865 1.812 1.76 1.71 1.66 1.612 1.566 1.52 1.476 1.433 1.391 1.35 1.31 1.272 1.234 1.197 1.162 1.127 1.094 1.061 1.029 0.999 0.969 0.94 0.912 0.884 0.858 0.832 0.807 0.782 0.759 0.736 0.714 0.692 0.671 0.651 0.631 0.612 0.593 0.576 0.558 0.541 0.525 0.509 0.493 0.478 0.464 0.45 0.436 0.423 0.41 0.397 0.385 0.374 0.362 0.351 0.341 0.33 0.32 0.31 0.301 0.292 0.283 0.274 0.266 0.258 0.25 0.242 0.235 0.228 0.221 0.214 0.208 0.201

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.994" PeakHeight="110.0" Num="3" Error="0.0">
-26.479 7.968 -1.213
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.994" EndFrequency="4.35" PeakHeight="298.51" Num="5" zHalfNm="234.747" Error="2.819">
-139.491 7.342 -10.306 6.501 -1.327
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="51.229" Depth="0.214"/>
<TopsideChapman PeakHeight="298.51" PeakDensity="234770.47" PeakScaleHeight="50.419" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
