<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 22:40:00.000"
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 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Severe F-spread, 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" >
2026.11.02 (306) 22:40:00</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">
FF202630611022240009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.111" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.774" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="386.173" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="346.486" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="323.003" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.210" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="37.164" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.950" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="17.200" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="50.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="90">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 300.833 301.667 302.500 303.333 304.167 305.000 310.000 315.000 317.500 320.000 322.500 325.000 327.200 329.400 331.600 333.800 336.000 338.200 340.400 342.600 344.800 347.000 349.200 351.400 353.600 355.800 358.000 360.200 362.400 364.600 366.800 369.000 371.200 373.400 375.600 377.800 380.000 375.000 375.000 375.000 374.545 374.091 373.636 373.182 372.727 372.273 371.818 371.364 370.909 370.455 370.000 372.500 375.000 370.000 370.000 370.000 365.000 365.833 366.667 367.500 368.333 369.167 370.000 370.000 375.000 375.000 370.000 370.000 371.429 372.857 374.286 375.714 377.143 378.571 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 375.000 380.000 381.254 383.116 386.173 392.114 408.675
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 57 60 0 0 57 66 63 0 54 54 57 0 57 57 60 0 0 0 57 57 0 57 0 57 60 60 54 0 54 0 60 0 66 0 63 66 63 69 63 66 0 69 66 0 66 66 0 63 0 63 63 66 0 0 63 63 0 60 60 0 0 0 63 60 60 0 66 60 0 0 0 0 0 60 66 66 0 63 63 60 60 60 60 60 66 66 60 66 57
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.171875 1.171875 1.171875 0.390625 0.390625 1.171875 1.171875 -0.390625 1.953125 1.171875 -0.390625 -1.953125 -0.390625 0.390625 1.171875 1.171875 -0.390625 1.171875 -0.390625 1.953125 -1.171875 1.171875 0.390625 1.171875 0.390625 -0.390625 -0.390625 1.171875 1.171875 2.734375 0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 -0.390625 1.171875 -0.390625 1.171875 -0.390625 0.390625 1.171875 1.171875 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 2.734375 -1.171875 1.171875 1.171875 -1.953125 0.390625 0.390625 1.953125 1.953125 1.171875 1.171875 0.390625 0.390625 0.390625 1.171875 0.390625 1.171875 1.953125 -1.171875 -1.171875 1.953125 1.171875 1.953125 1.171875 1.953125 1.171875 1.171875 1.953125 1.171875 0.390625 0.390625 1.171875 1.171875 0.390625 1.171875 -0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="100">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.844 145.0 150.0 155.0 160.0 165.0 170.0 175.0 177.688 180.0 185.0 190.0 195.0 200.0 205.0 210.0 211.532 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 346.486 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.33 0.309 0.281 0.241 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.233 0.256 0.279 0.302 0.324 0.347 0.354 0.429 0.552 0.689 0.836 0.99 1.149 1.315 1.485 1.661 1.843 2.031 2.226 2.428 2.638 2.857 3.086 3.325 3.576 3.842 4.123 4.422 4.744 5.093 5.476 5.904 6.396 6.93 7.0 6.973 6.85 6.649 6.388 6.086 5.757 5.414 5.067 4.723 4.387 4.064 3.755 3.463 3.189 2.932 2.693 2.471 2.265 2.075 1.9 1.739 1.591 1.456 1.331 1.217 1.112 1.016 0.929 0.849 0.775 0.708 0.647 0.591 0.54 0.493 0.45 0.411 0.375 0.343 0.313 0.286 0.261 0.238 0.218

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="7.0" PeakHeight="346.486" Num="5" zHalfNm="323.003" Error="2.461">
-106.895 -48.558 26.67 -6.886 0.715
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="101.532" Depth="0.154"/>
<TopsideChapman PeakHeight="346.486" PeakDensity="607940.44" PeakScaleHeight="17.2" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
