<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-25 -298 17:20:00.000"
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="14.0">
<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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</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" >
2026.10.25 (298) 17:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629810251720009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.667" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.466" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="420.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="420.000" 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="11.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="460.000" 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="3.115" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.230" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="337.119" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.595" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.930" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="149.079" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.038" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.333" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="162.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.790" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
420.000 425.000 425.000 425.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 460.000 460.000 460.000 470.000 475.000 475.000 480.000 490.000 495.000 505.000 517.800 531.662 546.722 563.144 581.120 600.883 622.713
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 66 0 0 0 57 0 0 0 0 0 0 0 0 0 0 51 0 0 0 0 0 0 57 51 39 0 54 0 0 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 -1.171875 2.734375 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.526 90.0 95.0 100.0 105.0 110.0 112.708 115.0 115.417 118.125 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 337.119 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.094 2.696 3.014 3.115 2.993 2.993 2.993 3.115 3.19 3.389 3.587 3.79 3.998 4.213 4.435 4.666 4.905 5.151 5.404 5.661 5.921 6.183 6.446 6.708 6.968 7.225 7.48 7.73 7.977 8.22 8.458 8.692 8.921 9.146 9.366 9.581 9.791 9.996 10.194 10.387 10.572 10.749 10.918 11.076 11.224 11.358 11.478 11.582 11.667 11.733 11.777 11.798 11.8 11.799 11.789 11.771 11.746 11.712 11.671 11.624 11.569 11.509 11.443 11.371 11.293 11.211 11.125 11.034 10.939 10.841 10.739 10.634 10.526 10.416 10.303 10.188 10.071 9.953 9.833 9.712 9.59 9.467 9.343 9.218 9.093 8.968 8.843 8.717 8.592 8.467 8.342 8.218 8.094 7.97 7.848 7.726 7.605 7.484 7.365 7.246 7.129 7.013 6.897 6.783 6.67 6.559 6.448 6.339 6.231 6.125 6.019 5.915 5.813 5.712 5.612 5.513 5.416 5.32 5.226 5.133 5.041 4.951 4.862 4.774 4.688 4.603 4.52 4.437 4.357 4.277 4.199 4.122 4.046 3.971 3.898 3.826 3.755 3.686 3.617 3.55 3.484 3.419 3.355 3.292 3.231 3.17 3.111 3.052 2.995 2.939 2.883 2.829 2.776 2.723 2.672 2.621 2.572 2.523 2.475 2.428 2.382 2.337 2.293 2.249 2.206 2.165 2.123 2.083 2.043 2.004 1.966 1.929 1.892 1.856 1.82 1.786 1.751 1.718 1.685 1.653 1.621 1.59 1.56 1.53 1.501 1.472

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.115" PeakHeight="110.0" Num="3" Error="0.0">
-30.29 12.841 -3.025
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.115" EndFrequency="11.8" PeakHeight="337.119" Num="5" zHalfNm="227.595" Error="2.615">
-211.337 -13.098 8.48 -4.481 1.442
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.125" Depth="0.122"/>
<TopsideChapman PeakHeight="337.119" PeakDensity="1727543.4" PeakScaleHeight="80.333" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
