<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 11:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% 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" >
2026.10.26 (299) 11:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629910261140009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="5.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.497" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="19.233" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="4.500" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="110.000" Name="h`Es" 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="4.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="240.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.028" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.188" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="213.115" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="144.290" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.971" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="3.650" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="76.821" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="7.569" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="46.053" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="118.410" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.230" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 250.000 260.000 270.000 278.750 287.500 296.250 305.000 308.000 311.000 314.000 317.000 320.000 323.000 326.271 331.221 339.585 356.759
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 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 1.953125 -2.734375 -1.953125 2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 2.734375
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
120.000 120.000 119.444 118.889 118.333 117.778 117.222 116.667 116.111 115.556 115.000 115.000 115.000 115.000 115.000 115.000 115.000 110.000
</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
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="143">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.542 90.0 95.0 100.0 105.0 110.0 113.091 115.0 116.183 119.274 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 213.115 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.036 2.621 2.93 3.028 2.906 2.906 2.906 3.028 3.057 3.238 3.408 3.577 3.746 3.912 4.072 4.224 4.366 4.5 4.626 4.746 4.86 4.971 5.079 5.185 5.29 5.391 5.478 5.5 5.499 5.488 5.466 5.433 5.391 5.34 5.28 5.214 5.141 5.063 4.98 4.892 4.802 4.708 4.611 4.513 4.413 4.312 4.21 4.109 4.007 3.905 3.804 3.703 3.604 3.506 3.409 3.313 3.219 3.127 3.036 2.947 2.86 2.774 2.691 2.609 2.53 2.452 2.377 2.303 2.231 2.161 2.093 2.027 1.963 1.901 1.84 1.781 1.724 1.669 1.615 1.563 1.512 1.463 1.415 1.369 1.325 1.281 1.239 1.199 1.159 1.121 1.085 1.049 1.014 0.981 0.949 0.917 0.887 0.858 0.829 0.802 0.775 0.75 0.725 0.701 0.677 0.655 0.633 0.612 0.592 0.572 0.553 0.535 0.517 0.5 0.483 0.467 0.452 0.437 0.422 0.408 0.394 0.381 0.369 0.356 0.344 0.333 0.322 0.311 0.301 0.291 0.281 0.272 0.263 0.254 0.245 0.237 0.229 0.222 0.214 0.207 0.2

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.028" PeakHeight="110.0" Num="3" Error="0.0">
-30.218 12.737 -2.977
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.028" EndFrequency="5.5" PeakHeight="213.115" Num="5" zHalfNm="144.29" Error="3.422">
-78.089 -24.345 11.93 -4.482 1.145
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.274" Depth="0.122"/>
<TopsideChapman PeakHeight="213.115" PeakDensity="375310.2" PeakScaleHeight="46.053" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
