<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-25 -298 18:00:00.000"
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="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) 18:00:00</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">
FF202629810251800009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.731" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.914" 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="12.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="440.000" 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="2.945" 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="4.146" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="329.426" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.954" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.147" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.004" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.197" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.517" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="150.390" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.800" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="36">
<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 11.85 11.9 11.95 12.0 12.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
400.000 405.000 405.000 405.000 405.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 440.000 440.000 440.000 445.000 450.000 455.000 455.000 462.534 470.717 479.637 489.398 500.127 511.972 525.119 539.795 556.283 574.939 596.224
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 63 51 0 0 51 0 0 0 0 0 0 0 0 0 0 0 63 0 0 0 54 0 0 57 0 51 0 0 0 0 0 0 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 0.390625 0.390625 2.734375 2.734375 0.390625 0.390625 -0.390625 -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" >
89.555 90.0 95.0 100.0 105.0 110.0 113.464 115.0 116.928 120.0 120.392 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 329.426 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.979 2.549 2.849 2.945 2.823 2.823 2.823 2.931 2.945 3.138 3.347 3.559 3.778 4.006 4.243 4.489 4.746 5.011 5.284 5.563 5.847 6.133 6.42 6.707 6.992 7.274 7.553 7.828 8.099 8.365 8.627 8.884 9.136 9.383 9.624 9.86 10.09 10.313 10.529 10.736 10.935 11.123 11.3 11.463 11.61 11.74 11.85 11.938 12.002 12.039 12.05 12.05 12.044 12.027 12.001 11.966 11.921 11.869 11.809 11.742 11.667 11.586 11.499 11.407 11.309 11.206 11.099 10.988 10.873 10.754 10.633 10.509 10.382 10.253 10.122 9.99 9.856 9.721 9.584 9.448 9.31 9.172 9.034 8.896 8.758 8.621 8.483 8.346 8.21 8.075 7.94 7.806 7.674 7.542 7.412 7.282 7.154 7.027 6.902 6.778 6.656 6.535 6.415 6.297 6.181 6.066 5.953 5.841 5.731 5.623 5.516 5.411 5.307 5.205 5.105 5.006 4.909 4.814 4.72 4.628 4.537 4.448 4.36 4.274 4.19 4.107 4.025 3.945 3.867 3.789 3.714 3.639 3.566 3.495 3.425 3.356 3.288 3.222 3.156 3.093 3.03 2.969 2.908 2.849 2.791 2.735 2.679 2.624 2.571 2.518 2.467 2.416 2.367 2.319 2.271 2.225 2.179 2.134 2.091 2.048 2.006 1.964 1.924 1.884 1.846 1.808 1.771 1.734 1.698 1.663 1.629 1.596 1.563 1.53 1.499 1.468 1.438 1.408 1.379 1.35 1.322 1.295 1.268 1.242 1.217 1.191

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.945" PeakHeight="110.0" Num="3" Error="0.0">
-30.148 12.634 -2.931
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.945" EndFrequency="12.05" PeakHeight="329.426" Num="5" zHalfNm="227.954" Error="2.45">
-201.929 -12.24 8.036 -4.271 1.37
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.392" Depth="0.122"/>
<TopsideChapman PeakHeight="329.426" PeakDensity="1801519.9" PeakScaleHeight="74.517" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
