<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-21 -294 11:10:00.000"
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="12.0">
<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: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.21 (294) 11:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629410211110009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.267" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="35.606" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.150" Name="fxI" 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="10.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="335.000" 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="2.885" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="257.555" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="200.960" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.964" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="73.762" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="26.382" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="40.255" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="99.060" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="76">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.769 291.538 292.308 293.077 293.846 294.615 295.385 296.154 296.923 297.692 298.462 299.231 300.000 300.769 301.538 302.308 303.077 303.846 304.615 305.385 306.154 306.923 307.692 308.462 309.231 310.000 310.769 311.538 312.308 313.077 313.846 314.615 315.385 316.154 316.923 317.692 318.462 319.231 320.000 325.000 325.000 326.429 327.857 329.286 330.714 332.143 333.571 335.000 345.000 345.000 345.000 350.000 350.000 360.000 365.000 375.000 385.000 395.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 57 0 0 0 0 0 0 0 48 0 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 54 0 60 0 0 0 54 39 48 39 0 0 0 0 0 54 42 51 54 54 57 60 57 54 54 51
</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 -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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="155">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.565 90.0 95.0 100.0 105.0 110.0 113.739 115.0 117.478 120.0 121.217 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 257.555 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.939 2.497 2.791 2.885 2.763 2.763 2.763 2.845 2.885 3.09 3.406 3.75 4.097 4.434 4.757 5.068 5.369 5.662 5.95 6.235 6.517 6.799 7.081 7.365 7.652 7.942 8.237 8.537 8.843 9.156 9.474 9.798 10.121 10.432 10.703 10.875 10.9 10.896 10.865 10.805 10.719 10.608 10.477 10.327 10.161 9.98 9.787 9.585 9.373 9.156 8.933 8.706 8.477 8.246 8.015 7.784 7.555 7.327 7.102 6.88 6.661 6.446 6.236 6.029 5.828 5.631 5.438 5.251 5.069 4.892 4.72 4.553 4.391 4.233 4.081 3.934 3.791 3.653 3.52 3.391 3.266 3.146 3.03 2.918 2.809 2.705 2.604 2.507 2.413 2.323 2.236 2.152 2.071 1.994 1.919 1.846 1.777 1.71 1.645 1.583 1.523 1.466 1.41 1.357 1.305 1.256 1.208 1.163 1.118 1.076 1.035 0.996 0.958 0.922 0.887 0.853 0.821 0.789 0.759 0.731 0.703 0.676 0.65 0.626 0.602 0.579 0.557 0.536 0.515 0.496 0.477 0.459 0.441 0.425 0.408 0.393 0.378 0.364 0.35 0.336 0.324 0.311 0.299 0.288 0.277 0.267 0.256 0.247 0.237 0.228 0.22 0.211 0.203

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.885" PeakHeight="110.0" Num="3" Error="0.0">
-30.097 12.558 -2.896
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.885" EndFrequency="10.9" PeakHeight="257.555" Num="5" zHalfNm="200.96" Error="2.436">
-115.047 -34.252 16.72 -3.311 -0.448
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.217" Depth="0.122"/>
<TopsideChapman PeakHeight="257.555" PeakDensity="1474069.5" PeakScaleHeight="40.255" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
