<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 19:50:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.11.01 (305) 19:50:00</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">
FF202630511011950009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.447" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.016" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.800" 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="10.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.086" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="400.403" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="285.542" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.642" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.324" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="58.765" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.281" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="172.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.730" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="58">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
420.000 423.333 426.667 430.000 430.000 435.000 435.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 455.000 460.000 460.000 465.000 465.000 465.000 470.000 475.000 480.000 470.000 470.000 475.000 485.000 485.000 485.000 490.000 495.000 500.000 500.000 500.000 505.000 515.000 515.000 515.000 520.000 530.000 535.000 540.000 545.727 551.972 558.808 566.323 574.625 583.842 594.136 605.707 618.808 633.764 650.999 671.077 694.765
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 69 0 63 69 0 0 0 0 0 0 60 66 60 0 60 66 0 63 60 51 0 51 60 63 63 63 63 60 57 60 60 57 51 57 57 57 57 57 57 57 60 60 57 54 54 54 48 48 48 45 48 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 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875
</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" >
89.737 90.0 95.0 100.0 105.0 110.0 115.0 117.737 120.0 125.0 125.474 130.0 133.211 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 400.403 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.399 1.806 2.019 2.086 2.032 1.955 1.955 1.955 1.955 2.032 2.086 2.135 2.274 2.416 2.562 2.714 2.871 3.036 3.208 3.387 3.573 3.767 3.966 4.171 4.382 4.596 4.813 5.032 5.253 5.475 5.697 5.919 6.14 6.361 6.58 6.798 7.015 7.23 7.444 7.655 7.866 8.074 8.28 8.485 8.687 8.887 9.084 9.279 9.47 9.658 9.842 10.022 10.196 10.365 10.526 10.68 10.824 10.957 11.078 11.185 11.276 11.349 11.404 11.437 11.45 11.45 11.447 11.436 11.418 11.393 11.361 11.322 11.278 11.228 11.172 11.111 11.045 10.975 10.9 10.821 10.739 10.652 10.563 10.47 10.374 10.276 10.175 10.072 9.968 9.861 9.753 9.643 9.532 9.42 9.307 9.193 9.078 8.963 8.848 8.732 8.616 8.5 8.384 8.268 8.153 8.037 7.923 7.808 7.694 7.581 7.468 7.356 7.245 7.135 7.026 6.917 6.809 6.703 6.597 6.493 6.389 6.287 6.185 6.085 5.986 5.888 5.791 5.696 5.601 5.508 5.416 5.325 5.236 5.148 5.06 4.975 4.89 4.806 4.724 4.643 4.563 4.484 4.407 4.33 4.255 4.181 4.108 4.036 3.965 3.896 3.827 3.76 3.694 3.629 3.564 3.501 3.439 3.378 3.318 3.259 3.201 3.144 3.088 3.033 2.978 2.925 2.872 2.821 2.77 2.72 2.672 2.623 2.576 2.53 2.484 2.439 2.395 2.352 2.309 2.268 2.226 2.186 2.147 2.108 2.069 2.032

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.086" PeakHeight="110.0" Num="3" Error="0.0">
-29.195 11.289 -2.357
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.086" EndFrequency="11.45" PeakHeight="400.403" Num="5" zHalfNm="285.542" Error="2.428">
-255.105 -20.812 13.578 -6.669 1.816
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="23.211" Depth="0.131"/>
<TopsideChapman PeakHeight="400.403" PeakDensity="1626581.9" PeakScaleHeight="84.281" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
