<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-30 -089 08:50:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.03.30 (089) 08:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608903300850009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.143" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.459" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="4.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="325.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.890" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="297.638" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="231.345" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.826" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="94.273" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.638" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="51.170" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="85.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.060" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="45">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 4.4 4.45 4.5 4.55 4.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 250.000 251.429 252.857 254.286 255.714 257.143 258.571 260.000 265.000 265.000 265.000 267.500 270.000 270.000 272.500 275.000 275.000 280.000 280.000 280.000 285.000 290.000 290.000 290.000 290.000 293.333 296.667 300.000 305.000 310.000 315.000 315.000 317.500 320.000 325.000 335.000 340.000 348.150 358.551 372.281 391.247 419.147 464.238 549.488
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 0 0 0 72 0 0 72 63 0 72 60 66 69 0 66 69 60 69 66 66 60 63 69 66 51 0 60 60 57 51 63 0 60 66 69 69 69 66 63 66 57 57 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 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 1.953125 1.953125 1.953125 1.953125 2.734375 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="165">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.406 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 130.329 135.0 140.0 145.0 150.0 150.657 155.0 160.0 165.0 170.0 170.986 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 297.638 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.592 0.771 0.862 0.89 0.875 0.83 0.749 0.618 0.607 0.607 0.607 0.607 0.607 0.607 0.667 0.737 0.807 0.876 0.89 0.976 1.106 1.258 1.427 1.61 1.805 2.013 2.234 2.466 2.707 2.951 3.19 3.416 3.622 3.806 3.967 4.105 4.223 4.322 4.404 4.47 4.522 4.56 4.586 4.598 4.6 4.599 4.591 4.575 4.552 4.522 4.486 4.445 4.398 4.346 4.291 4.231 4.169 4.103 4.035 3.965 3.893 3.82 3.745 3.67 3.594 3.517 3.441 3.364 3.287 3.211 3.135 3.06 2.986 2.912 2.839 2.767 2.696 2.627 2.558 2.491 2.424 2.36 2.296 2.234 2.172 2.113 2.054 1.997 1.941 1.887 1.834 1.782 1.731 1.682 1.634 1.587 1.541 1.497 1.454 1.412 1.371 1.331 1.292 1.254 1.218 1.182 1.147 1.113 1.081 1.049 1.018 0.988 0.959 0.93 0.903 0.876 0.85 0.825 0.8 0.776 0.753 0.731 0.709 0.688 0.667 0.647 0.628 0.609 0.591 0.573 0.556 0.54 0.523 0.508 0.493 0.478 0.463 0.45 0.436 0.423 0.41 0.398 0.386 0.375 0.363 0.352 0.342 0.332 0.322 0.312 0.303 0.293 0.285 0.276 0.268 0.26 0.252 0.244 0.237 0.23 0.223 0.216 0.21 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.89" PeakHeight="110.0" Num="3" Error="0.0">
-25.962 7.44 -1.072
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.89" EndFrequency="4.6" PeakHeight="297.638" Num="5" zHalfNm="231.345" Error="2.455">
-139.734 20.852 -10.122 3.411 -1.059
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="60.986" Depth="0.283"/>
<TopsideChapman PeakHeight="297.638" PeakDensity="262531.03" PeakScaleHeight="51.17" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
