<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 16:00:00.000"
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="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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x 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" >
2026.10.20 (293) 16:00:00</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">
FF202629310201600009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.541" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.234" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="390.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="390.000" 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="7.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="390.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.333" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.334" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="389.031" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="221.919" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.326" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="224.212" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.950" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="122.906" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="243.590" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.930" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="35">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
390.000 390.000 395.000 400.000 405.000 410.000 415.000 425.000 430.000 440.000 445.000 450.000 455.000 465.000 475.000 485.000 495.000 510.000 525.000 540.000 555.000 570.000 585.000 593.460 602.773 613.074 624.531 637.348 651.783 668.164 686.912 708.581 733.911 763.914 800.016
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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 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 2.734375 -0.390625 2.734375 -2.734375 -0.390625 1.171875 -1.171875 -0.390625 1.171875 1.953125 -1.953125
</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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.787 113.573 115.0 115.36 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 389.031 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.242 2.885 3.224 3.333 3.21 3.21 3.308 3.333 3.461 3.585 3.702 3.817 3.932 4.049 4.167 4.289 4.415 4.544 4.679 4.817 4.959 5.105 5.254 5.403 5.553 5.702 5.849 5.993 6.134 6.271 6.404 6.533 6.658 6.779 6.896 7.01 7.12 7.226 7.329 7.429 7.526 7.619 7.71 7.798 7.883 7.965 8.044 8.12 8.193 8.262 8.328 8.391 8.449 8.504 8.554 8.599 8.638 8.673 8.701 8.723 8.739 8.748 8.75 8.75 8.748 8.743 8.736 8.726 8.714 8.699 8.681 8.662 8.64 8.616 8.59 8.562 8.532 8.5 8.467 8.431 8.394 8.356 8.316 8.274 8.231 8.187 8.141 8.095 8.047 7.998 7.948 7.897 7.845 7.793 7.739 7.685 7.63 7.574 7.518 7.461 7.404 7.346 7.288 7.229 7.17 7.111 7.051 6.991 6.931 6.871 6.811 6.75 6.689 6.629 6.568 6.507 6.446 6.386 6.325 6.264 6.204 6.143 6.083 6.023 5.963 5.903 5.844 5.785 5.726 5.667 5.608 5.55 5.492 5.434 5.377 5.32 5.263 5.207 5.151 5.096 5.04 4.985 4.931 4.877 4.823 4.77 4.717 4.664 4.612 4.56 4.509 4.458 4.408 4.358 4.308 4.259 4.21 4.162 4.114 4.067 4.02 3.973 3.927 3.881 3.836 3.791 3.747 3.703 3.659 3.616 3.574 3.531 3.489 3.448 3.407 3.367 3.326 3.287 3.247 3.209 3.17 3.132 3.094 3.057 3.02 2.984

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.333" PeakHeight="110.0" Num="3" Error="0.0">
-30.46 13.091 -3.139
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.333" EndFrequency="8.75" PeakHeight="389.031" Num="5" zHalfNm="221.919" Error="10.548">
-271.095 -6.016 6.838 -6.796 3.398
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.36" Depth="0.123"/>
<TopsideChapman PeakHeight="389.031" PeakDensity="949906.94" PeakScaleHeight="122.906" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
