<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 13:20:00.000"
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 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: 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" >
2026.10.24 (297) 13:20:00</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">
FF202629710241320009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.623" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.753" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="470.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="470.000" 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="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="487.220" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.324" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.330" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="317.698" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="207.766" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.208" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="144.113" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.177" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="78.402" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="166.780" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.610" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
470.000 470.000 475.000 475.000 480.000 483.412 487.220 491.497 496.334 501.851 508.200 515.587 524.287 534.685 547.332 563.045
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 63 57 57 0 54 0 45 0 42 45 45 57 63 51 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.494 90.0 95.0 100.0 105.0 110.0 111.822 113.643 115.0 115.465 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 317.698 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.236 2.877 3.216 3.324 3.201 3.201 3.293 3.324 3.507 3.695 3.879 4.065 4.257 4.455 4.662 4.877 5.099 5.328 5.559 5.792 6.022 6.25 6.472 6.688 6.898 7.102 7.3 7.492 7.679 7.86 8.037 8.209 8.377 8.541 8.702 8.858 9.011 9.16 9.305 9.445 9.58 9.708 9.828 9.937 10.033 10.11 10.166 10.196 10.2 10.199 10.192 10.176 10.154 10.124 10.088 10.046 9.997 9.943 9.884 9.82 9.751 9.677 9.6 9.518 9.434 9.346 9.255 9.161 9.064 8.966 8.865 8.763 8.659 8.553 8.446 8.339 8.23 8.12 8.01 7.9 7.789 7.678 7.567 7.456 7.345 7.234 7.124 7.014 6.905 6.796 6.688 6.581 6.474 6.368 6.263 6.159 6.056 5.954 5.854 5.754 5.655 5.557 5.461 5.365 5.271 5.178 5.087 4.996 4.907 4.819 4.732 4.647 4.562 4.479 4.397 4.317 4.237 4.159 4.083 4.007 3.932 3.859 3.787 3.716 3.647 3.578 3.511 3.445 3.38 3.316 3.253 3.191 3.13 3.071 3.012 2.955 2.898 2.843 2.788 2.735 2.682 2.63 2.58 2.53 2.481 2.433 2.386 2.34 2.295 2.251 2.207 2.164 2.122 2.081 2.04 2.001 1.962 1.924 1.886 1.849 1.813 1.778 1.743 1.709 1.676 1.643 1.611 1.579 1.549 1.518 1.489 1.459 1.431 1.403 1.375 1.348 1.322 1.296 1.271 1.246 1.221 1.197 1.174 1.151 1.128 1.106

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.324" PeakHeight="110.0" Num="3" Error="0.0">
-30.453 13.081 -3.134
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.324" EndFrequency="10.2" PeakHeight="317.698" Num="5" zHalfNm="207.766" Error="5.572">
-188.699 -23.064 14.822 -7.961 2.669
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.465" Depth="0.123"/>
<TopsideChapman PeakHeight="317.698" PeakDensity="1290818.9" PeakScaleHeight="78.402" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
