<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-01 -060 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" >
2026.03.01 (060) 08:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.15" 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">
FF202606003010850009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.288" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.442" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="305.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.780" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="282.884" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="229.192" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.826" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="76.406" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.347" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="41.389" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="66.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="62">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 240.000 238.333 236.667 235.000 240.000 240.000 240.000 245.000 241.667 238.333 235.000 235.000 236.364 237.727 239.091 240.455 241.818 243.182 244.545 245.909 247.273 248.636 250.000 250.000 250.000 252.500 255.000 257.500 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 270.000 270.000 270.000 272.500 275.000 280.000 280.000 285.000 285.000 290.000 290.000 295.000 300.000 300.000 302.500 305.000 315.000 320.000 325.000 335.000 347.500 360.000 384.801 427.518 518.546
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 51 0 0 69 0 63 63 0 0 0 57 54 51 69 0 63 0 72 0 0 0 0 72 72 75 0 72 0 63 66 0 75 75 0 0 0 66 69 66 0 66 60 66 66 72 66 75 72 69 75 0 72 72 72 69 69 0 66 0 48 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 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="142">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.587 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 133.412 135.0 140.0 145.0 150.0 155.0 156.823 160.0 165.0 170.0 175.0 180.0 180.235 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 282.884 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.518 0.676 0.755 0.78 0.768 0.73 0.664 0.558 0.447 0.447 0.447 0.447 0.447 0.447 0.447 0.492 0.563 0.634 0.706 0.777 0.78 0.929 1.11 1.317 1.552 1.821 2.129 2.479 2.858 3.238 3.589 3.894 4.149 4.36 4.533 4.673 4.785 4.871 4.934 4.975 4.997 5.0 4.999 4.986 4.961 4.924 4.876 4.82 4.755 4.682 4.603 4.519 4.43 4.337 4.241 4.142 4.042 3.94 3.837 3.734 3.631 3.528 3.426 3.325 3.225 3.126 3.029 2.934 2.84 2.749 2.659 2.571 2.486 2.403 2.321 2.242 2.166 2.091 2.019 1.948 1.88 1.814 1.75 1.688 1.628 1.57 1.514 1.46 1.408 1.357 1.308 1.261 1.215 1.171 1.128 1.087 1.048 1.01 0.973 0.937 0.903 0.87 0.838 0.807 0.778 0.749 0.721 0.695 0.669 0.645 0.621 0.598 0.576 0.555 0.534 0.515 0.496 0.477 0.46 0.443 0.426 0.411 0.395 0.381 0.367 0.353 0.34 0.328 0.315 0.304 0.292 0.282 0.271 0.261 0.252 0.242 0.233 0.225 0.216 0.208 0.201

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.78" PeakHeight="110.0" Num="3" Error="0.0">
-25.272 6.75 -0.891
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.78" EndFrequency="5.0" PeakHeight="282.884" Num="5" zHalfNm="229.192" Error="2.629">
-116.647 21.898 -10.794 3.537 -0.643
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="70.235" Depth="0.333"/>
<TopsideChapman PeakHeight="282.884" PeakDensity="310173.7" PeakScaleHeight="41.389" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
