<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 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" >
2026.10.29 (302) 22:40:00</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">
FF202630210292240009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.792" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.333" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="411.067" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="378.405" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.086" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="52.289" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.910" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.821" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="78.010" 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="60">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
400.000 430.000 430.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 451.667 453.333 455.000 454.865 454.730 454.595 454.459 454.324 454.189 454.054 453.919 453.784 453.649 453.514 453.378 453.243 453.108 452.973 452.838 452.703 452.568 452.432 452.297 452.162 452.027 451.892 451.757 451.622 451.486 451.351 451.216 451.081 450.946 450.811 450.676 450.541 450.405 450.270 450.135 450.000 455.000 456.760 459.607 465.000 479.120
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 57 60 60 63 0 57 57 0 0 0 0 63 0 0 57 0 60 0 0 0 0 0 0 0 0 0 0 60 0 0 63 60 63 0 0 0 0 0 0 60 63 54 0 0 0 0 57 0 0 0 0 0 60 60 60 0 54 60 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -2.734375 -1.171875 1.953125 1.953125 1.953125 1.953125 1.953125 -1.953125 2.734375 1.953125 1.953125 -2.734375 2.734375 1.953125 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 1.953125 2.734375 2.734375 2.734375 2.734375 1.171875 1.171875 1.171875 -1.171875 2.734375 -2.734375 -2.734375 0.390625 0.390625 1.171875 -1.171875 2.734375 2.734375 1.953125 1.953125 -1.171875 1.171875 2.734375 -1.171875 2.734375 2.734375 -2.734375 1.171875 1.953125 2.734375 0.390625 1.171875 1.953125 0.390625 1.171875 1.171875 1.171875 2.734375 -1.953125 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="128">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.881 145.0 150.0 155.0 160.0 165.0 170.0 175.0 177.761 180.0 185.0 190.0 195.0 200.0 205.0 210.0 211.642 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 411.067 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0
</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 0.242 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.21 0.233 0.256 0.278 0.301 0.324 0.347 0.354 0.38 0.428 0.494 0.579 0.68 0.787 0.895 1.002 1.106 1.208 1.31 1.411 1.512 1.613 1.715 1.818 1.922 2.028 2.136 2.245 2.357 2.472 2.589 2.709 2.834 2.962 3.094 3.231 3.373 3.522 3.677 3.841 4.013 4.196 4.393 4.605 4.839 5.104 5.415 5.802 5.85 5.835 5.776 5.679 5.55 5.396 5.222 5.033 4.834 4.628 4.419 4.21 4.002 3.797 3.597 3.403 3.215 3.035 2.861 2.696 2.538 2.388 2.245 2.11 1.982 1.861 1.747 1.64 1.538 1.443 1.353 1.269 1.19 1.115 1.045 0.98 0.918 0.86 0.806 0.755 0.708 0.663 0.621 0.582 0.545 0.51 0.478 0.448 0.419 0.393 0.368 0.345 0.323 0.302 0.283 0.265 0.248 0.233 0.218 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="5.85" PeakHeight="411.067" Num="5" zHalfNm="378.405" Error="4.451">
-152.28 -78.793 44.474 -12.053 -0.773
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="101.642" Depth="0.154"/>
<TopsideChapman PeakHeight="411.067" PeakDensity="424596.78" PeakScaleHeight="23.821" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
