<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 01:00:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.03.08 (067) 01:00:00</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">
FF202606703080100009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.362" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.567" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="265.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="265.000" 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="0.500" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="310.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="316.098" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.347" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.040" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="67.298" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.365" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="36.419" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="54.240" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="99">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 265.000 266.250 267.500 268.750 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 275.000 275.000 275.000 270.000 272.500 275.000 275.000 275.000 275.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.667 281.333 282.000 282.667 283.333 284.000 284.667 285.333 286.000 286.667 287.333 288.000 288.667 289.333 290.000 290.000 290.000 290.600 291.200 291.800 292.400 293.000 293.600 294.200 294.800 295.400 296.000 296.600 297.200 297.800 298.400 299.000 299.600 300.200 300.800 301.400 302.000 302.600 303.200 303.800 304.400 305.000 300.000 305.000 305.000 305.000 305.000 307.500 310.000 380.000 380.000 380.000 385.000 395.000 400.000 409.165 419.345 430.719 443.510
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 0 0 0 72 0 0 51 69 69 72 72 0 0 0 69 0 0 63 0 69 75 72 69 69 54 57 0 0 0 63 0 66 69 0 69 72 72 72 0 0 0 0 0 0 0 0 0 66 48 0 0 0 60 66 69 0 69 0 0 0 60 60 63 0 0 0 69 0 0 0 0 0 63 72 72 54 57 0 0 66 69 72 75 63 75 66 69 57 54 60 63 60 60 63 51 54 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 2.734375 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 1.953125 0.390625 0.390625 0.390625 1.953125 1.953125 1.953125 0.390625 1.953125 1.953125 1.953125 1.953125 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="148">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.167 150.0 155.0 160.0 165.0 170.0 175.0 180.0 182.333 185.0 190.0 195.0 200.0 205.0 210.0 215.0 218.5 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 316.098 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0
</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 0.333 0.315 0.291 0.258 0.213 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.233 0.254 0.275 0.297 0.318 0.339 0.354 0.379 0.489 0.645 0.86 1.154 1.568 2.189 3.149 4.317 5.29 6.016 6.569 7.001 7.343 7.614 7.826 7.986 8.1 8.17 8.199 8.2 8.191 8.155 8.093 8.008 7.903 7.781 7.643 7.492 7.331 7.16 6.982 6.799 6.612 6.421 6.23 6.038 5.846 5.655 5.466 5.28 5.096 4.916 4.74 4.567 4.399 4.235 4.075 3.92 3.77 3.624 3.483 3.347 3.215 3.087 2.964 2.846 2.731 2.621 2.515 2.413 2.315 2.221 2.13 2.042 1.959 1.878 1.801 1.726 1.655 1.586 1.521 1.457 1.397 1.339 1.283 1.23 1.178 1.129 1.082 1.037 0.994 0.952 0.912 0.874 0.838 0.803 0.769 0.737 0.706 0.676 0.648 0.621 0.595 0.57 0.546 0.523 0.501 0.48 0.46 0.441 0.422 0.405 0.388 0.371 0.356 0.341 0.326 0.313 0.3 0.287 0.275 0.263 0.252 0.242 0.232 0.222 0.213 0.204

</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="8.2" PeakHeight="316.098" Num="5" zHalfNm="268.347" Error="2.769">
-117.004 34.204 -19.711 6.341 -1.428
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="108.5" Depth="0.154"/>
<TopsideChapman PeakHeight="316.098" PeakDensity="834243.2" PeakScaleHeight="36.419" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
