<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 23:00:00.000"
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) 23:00:00</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">
FF202630210292300009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.209" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.018" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="357.402" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="333.599" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="315.186" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.921" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.267" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.574" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.096" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.700" 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="76">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
365.000 360.000 355.000 350.000 345.000 345.000 345.000 350.000 347.500 345.000 345.000 345.000 344.286 343.571 342.857 342.143 341.429 340.714 340.000 340.000 340.000 340.714 341.429 342.143 342.857 343.571 344.286 345.000 345.000 345.500 346.000 346.500 347.000 347.500 348.000 348.500 349.000 349.500 350.000 352.500 355.000 354.286 353.571 352.857 352.143 351.429 350.714 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 350.152 350.322 350.512 350.728 350.974 351.256 351.586 351.973 352.436 353.000 353.700 354.594 355.773 357.402 359.798 363.671 370.991 390.054
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 63 63 57 57 60 63 0 66 0 60 60 0 0 0 0 0 60 57 60 0 57 0 0 0 0 54 60 60 0 57 0 63 0 0 60 57 57 57 57 0 66 0 0 0 0 63 60 60 63 60 63 0 0 57 54 60 57 60 57 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" >
1.171875 1.171875 1.171875 1.953125 -0.390625 1.953125 1.171875 1.171875 1.171875 1.953125 1.171875 1.953125 1.171875 2.734375 1.171875 1.953125 1.953125 1.171875 1.953125 1.953125 1.171875 1.171875 1.953125 2.734375 1.953125 2.734375 1.953125 1.953125 1.171875 1.953125 2.734375 1.953125 2.734375 -0.390625 1.171875 2.734375 -2.734375 1.953125 2.734375 2.734375 1.953125 2.734375 0.390625 -0.390625 2.734375 1.171875 1.953125 2.734375 1.953125 2.734375 2.734375 2.734375 -1.171875 1.171875 2.734375 1.953125 2.734375 -1.171875 1.953125 -2.734375 -1.953125 0.390625 -0.390625 1.171875 1.953125 -0.390625 2.734375 2.734375 -0.390625 2.734375 2.734375 2.734375 -2.734375 -0.390625 -1.953125 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="89">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 144.604 145.0 150.0 155.0 160.0 165.0 170.0 175.0 179.208 180.0 185.0 190.0 195.0 200.0 205.0 210.0 213.812 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 333.599 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.344 0.331 0.311 0.284 0.247 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.204 0.226 0.248 0.27 0.293 0.315 0.337 0.354 0.369 0.459 0.607 0.779 0.947 1.108 1.268 1.428 1.592 1.76 1.936 2.12 2.315 2.522 2.744 2.984 3.245 3.531 3.849 4.207 4.615 5.09 5.653 6.284 6.55 6.544 6.431 6.203 5.896 5.537 5.15 4.754 4.362 3.982 3.621 3.283 2.969 2.679 2.413 2.172 1.952 1.753 1.573 1.411 1.265 1.134 1.016 0.91 0.816 0.73 0.654 0.586 0.524 0.469 0.42 0.376 0.337 0.301 0.27 0.242 0.216

</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="6.55" PeakHeight="333.599" Num="5" zHalfNm="315.186" Error="3.709">
-91.671 -44.465 20.333 -1.874 -2.11
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="103.812" Depth="0.154"/>
<TopsideChapman PeakHeight="333.599" PeakDensity="532289.06" PeakScaleHeight="14.096" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
