<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 15:10:00.000"
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="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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.11.02 (306) 15:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630611021510009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.628" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.906" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.374" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.353" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="329.838" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="219.947" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.946" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="141.574" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.566" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.571" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.000" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="38">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.95 11.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
425.000 430.000 430.000 432.500 435.000 435.000 436.667 438.333 440.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 455.000 455.000 455.000 458.333 461.667 465.000 465.000 470.000 475.000 475.000 485.000 485.000 490.000 495.000 500.000 510.000 515.000 520.000 530.000 545.000 560.000 577.542
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 63 0 0 0 0 0 57 57 54 57 54 54 54 57 54 54 54 0 0 0 51 0 51 54 45 54 51 51 51 48 51 51 48 48 0 42
</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
</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" >
89.486 90.0 95.0 100.0 105.0 110.0 111.618 113.237 114.855 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 329.838 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.27 2.92 3.264 3.374 3.251 3.251 3.374 3.38 3.566 3.752 3.94 4.134 4.335 4.545 4.762 4.987 5.217 5.449 5.682 5.914 6.142 6.365 6.583 6.796 7.003 7.205 7.401 7.593 7.78 7.963 8.143 8.32 8.493 8.664 8.832 8.999 9.163 9.326 9.487 9.647 9.806 9.962 10.117 10.269 10.418 10.56 10.694 10.814 10.912 10.978 11.0 11.0 10.995 10.982 10.96 10.93 10.892 10.847 10.796 10.737 10.673 10.603 10.528 10.448 10.363 10.273 10.18 10.083 9.982 9.879 9.772 9.664 9.552 9.439 9.324 9.207 9.089 8.97 8.85 8.729 8.607 8.485 8.362 8.24 8.117 7.995 7.872 7.75 7.629 7.508 7.387 7.267 7.148 7.03 6.913 6.797 6.682 6.568 6.455 6.343 6.232 6.123 6.015 5.908 5.803 5.698 5.596 5.494 5.394 5.296 5.198 5.103 5.008 4.915 4.823 4.733 4.644 4.557 4.471 4.386 4.303 4.221 4.141 4.062 3.984 3.907 3.832 3.758 3.686 3.614 3.544 3.475 3.408 3.341 3.276 3.212 3.149 3.088 3.027 2.968 2.909 2.852 2.796 2.741 2.687 2.633 2.581 2.53 2.48 2.431 2.383 2.335 2.289 2.244 2.199 2.155 2.112 2.07 2.029 1.988 1.949 1.91 1.872 1.834 1.798 1.762 1.726 1.692 1.658 1.625 1.592 1.56 1.529 1.498 1.468 1.439 1.41 1.382 1.354 1.327 1.3 1.274 1.248 1.223 1.198 1.174

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.374" PeakHeight="110.0" Num="3" Error="0.0">
-30.489 13.134 -3.159
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.374" EndFrequency="11.0" PeakHeight="329.838" Num="5" zHalfNm="219.947" Error="3.755">
-192.152 -38.503 23.991 -11.012 2.693
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.855" Depth="0.123"/>
<TopsideChapman PeakHeight="329.838" PeakDensity="1501240.8" PeakScaleHeight="76.571" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
