<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 09:10:00.000"
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="1 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 0 0 "/>
<Comments>AR.5002.44 Confidence: 80% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.10.23 (296) 09:10:00</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">
FF202629610230910009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="7.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.232" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.621" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="1.450" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="1.710" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="114.807" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="105.838" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="15.722" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="330.474" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.773" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="263.978" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="200.168" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.170" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="88.353" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.445" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="47.735" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="92.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.970" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
320.000 321.561 323.335 325.367 327.720 330.474 333.742 337.684 342.531 348.636 356.561 367.263 382.511 405.982 446.787
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 75 78 75 78 81 81 81 78 78 78 66 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 -1.953125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="6">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.45 1.5 1.55 1.6 1.65 1.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
114.807 115.993 117.415 119.199 121.624 125.566
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 0 0 66
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="164">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.0 95.0 100.0 105.0 105.838 110.0 115.0 115.352 120.0 124.865 125.0 130.0 134.379 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 263.978 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 1.247 1.587 1.708 1.71 1.685 1.587 1.577 1.577 1.577 1.579 1.649 1.71 1.733 1.927 2.132 2.35 2.58 2.822 3.073 3.332 3.598 3.867 4.138 4.409 4.677 4.941 5.199 5.448 5.687 5.914 6.126 6.321 6.496 6.649 6.776 6.877 6.949 6.99 7.0 7.0 6.989 6.965 6.928 6.88 6.82 6.751 6.673 6.587 6.494 6.395 6.291 6.181 6.068 5.952 5.832 5.711 5.588 5.464 5.339 5.214 5.089 4.964 4.84 4.717 4.595 4.474 4.354 4.237 4.121 4.007 3.895 3.785 3.677 3.572 3.468 3.367 3.269 3.172 3.078 2.986 2.896 2.809 2.724 2.641 2.561 2.482 2.406 2.332 2.26 2.19 2.122 2.056 1.992 1.93 1.869 1.81 1.754 1.698 1.645 1.593 1.543 1.494 1.446 1.401 1.356 1.313 1.271 1.231 1.192 1.154 1.117 1.081 1.047 1.013 0.981 0.949 0.919 0.89 0.861 0.834 0.807 0.781 0.756 0.732 0.708 0.686 0.664 0.642 0.622 0.602 0.582 0.564 0.546 0.528 0.511 0.495 0.479 0.463 0.448 0.434 0.42 0.407 0.393 0.381 0.369 0.357 0.345 0.334 0.323 0.313 0.303 0.293 0.284 0.275 0.266 0.257 0.249 0.241 0.233 0.226 0.218 0.211 0.205

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.71" PeakHeight="105.838" Num="3" Error="5.788">
-22.459 8.221 -1.6
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.71" EndFrequency="7.0" PeakHeight="263.978" Num="5" zHalfNm="200.168" Error="0.699">
-128.411 -1.994 1.241 -0.596 0.161
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="28.541" Depth="0.133"/>
<TopsideChapman PeakHeight="263.978" PeakDensity="607940.44" PeakScaleHeight="47.735" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
