<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 00:50:00.000"
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 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" >
2026.11.03 (307) 00:50:00</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">
FF202630711030050009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.134" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.405" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="265.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="265.000" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="386.376" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="1.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="1.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="313.556" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="277.205" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.789" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="52.278" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.278" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.445" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="48.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.590" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="106">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.9 1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 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 7.05 7.1 7.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.833 271.667 272.500 273.333 274.167 275.000 270.000 272.500 275.000 275.000 275.000 275.000 279.000 283.000 287.000 291.000 295.000 299.000 303.000 307.000 311.000 315.000 312.000 309.000 306.000 303.000 300.000 300.000 300.000 296.875 293.750 290.625 287.500 284.375 281.250 278.125 275.000 272.500 270.000 272.500 275.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 282.500 285.000 287.500 290.000 288.750 287.500 286.250 285.000 285.000 287.500 290.000 288.333 286.667 285.000 292.333 299.667 307.000 314.333 321.667 329.000 336.333 343.667 351.000 358.333 365.667 373.000 380.333 387.667 395.000 390.000 390.000 390.000 388.750 387.500 386.250 385.000 385.000 385.000 386.376 390.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 60 63 0 63 66 0 66 0 0 0 63 63 66 60 0 63 0 63 63 0 57 60 66 0 63 0 63 63 66 60 63 66 0 0 66 0 0 54 57 57 57 0 57 66 60 63 60 63 66 57 0 60 57 63 57 60 0 60 0 63 0 60 60 60 60 63 60 54 0 63 0 57 57 54 57 0 60 0 57 0 0 0 0 0 0 0 63 0 0 0 0 0 60 60 66 0 0 60 63 66 66 60 60 57
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 -1.953125 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 1.171875 1.171875 1.953125 1.171875 1.171875 1.953125 1.953125 1.171875 1.171875 1.953125 1.953125 1.953125 1.953125 1.953125 0.390625 1.953125 1.953125 1.171875 -0.390625 1.953125 1.953125 1.171875 0.390625 -1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.171875 1.953125 1.953125 1.953125 1.953125 1.953125 2.734375 -1.953125 1.953125 1.953125 2.734375 -2.734375 1.953125 1.953125 0.390625 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.171875 1.953125 1.953125 2.734375 1.953125 1.171875 1.953125 1.171875 1.953125 -1.953125 -0.390625 0.390625 2.734375 2.734375 1.953125 1.171875 -0.390625 0.390625 -0.390625 1.953125 1.953125 0.390625 1.953125 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 1.953125 2.734375 1.953125 1.953125 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="121">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.167 150.0 155.0 160.0 165.0 170.0 175.0 180.0 182.333 185.0 190.0 195.0 200.0 205.0 210.0 215.0 218.5 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 313.556 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.333 0.315 0.291 0.258 0.213 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.233 0.254 0.275 0.297 0.318 0.339 0.354 0.4 0.551 0.722 0.927 1.182 1.503 1.904 2.393 2.961 3.577 4.204 4.805 5.357 5.844 6.258 6.596 6.854 7.032 7.13 7.15 7.148 7.113 7.039 6.931 6.795 6.634 6.454 6.26 6.054 5.84 5.62 5.399 5.176 4.955 4.737 4.522 4.312 4.108 3.91 3.719 3.534 3.356 3.186 3.022 2.866 2.716 2.574 2.438 2.309 2.185 2.068 1.957 1.852 1.752 1.657 1.567 1.482 1.401 1.324 1.252 1.183 1.118 1.057 0.999 0.944 0.892 0.843 0.797 0.753 0.711 0.672 0.635 0.6 0.567 0.535 0.506 0.478 0.451 0.427 0.403 0.381 0.36 0.34 0.321 0.303 0.286 0.271 0.256 0.241 0.228 0.216 0.204

</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="7.15" PeakHeight="313.556" Num="5" zHalfNm="277.205" Error="6.884">
-100.41 8.389 -4.992 1.804 0.153
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="108.5" Depth="0.154"/>
<TopsideChapman PeakHeight="313.556" PeakDensity="634274.2" PeakScaleHeight="27.445" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
