<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 18:00:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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) 18:00:00</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">
FF202629710241800009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.615" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.850" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="480.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="480.000" 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="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="486.714" 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="2.946" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.147" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="323.789" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="220.019" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.146" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="140.222" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.352" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.600" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="154.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.770" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
480.000 483.190 486.714 490.628 495.000 499.916 505.484 511.842 519.172 527.716 537.801 549.887 564.635
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 48 54 57 54 54 54 54 54 54 48 45 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
</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" >
89.555 90.0 95.0 100.0 105.0 110.0 113.458 115.0 116.915 120.0 120.373 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 323.789 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.98 2.55 2.85 2.946 2.824 2.824 2.824 2.933 2.946 3.135 3.329 3.523 3.72 3.923 4.134 4.354 4.583 4.82 5.066 5.316 5.571 5.826 6.081 6.334 6.583 6.827 7.067 7.301 7.53 7.753 7.972 8.184 8.392 8.595 8.792 8.984 9.171 9.352 9.526 9.693 9.853 10.003 10.143 10.27 10.383 10.479 10.556 10.611 10.643 10.65 10.65 10.643 10.628 10.604 10.573 10.534 10.488 10.436 10.377 10.312 10.242 10.166 10.086 10.001 9.911 9.818 9.722 9.622 9.519 9.414 9.306 9.196 9.084 8.97 8.855 8.738 8.621 8.503 8.384 8.264 8.144 8.024 7.903 7.783 7.663 7.543 7.424 7.305 7.187 7.069 6.952 6.836 6.721 6.607 6.494 6.382 6.271 6.161 6.052 5.945 5.839 5.734 5.63 5.528 5.427 5.327 5.229 5.132 5.037 4.943 4.85 4.759 4.669 4.581 4.494 4.408 4.324 4.241 4.159 4.079 4.0 3.923 3.847 3.772 3.698 3.626 3.555 3.485 3.417 3.35 3.284 3.219 3.155 3.093 3.032 2.971 2.912 2.854 2.798 2.742 2.687 2.633 2.581 2.529 2.478 2.429 2.38 2.332 2.285 2.239 2.194 2.15 2.107 2.064 2.023 1.982 1.942 1.902 1.864 1.826 1.789 1.753 1.718 1.683 1.649 1.615 1.582 1.55 1.519 1.488 1.458 1.428 1.399 1.371 1.343 1.316 1.289 1.263 1.237 1.212 1.187 1.163 1.139 1.116 1.093 1.071

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.946" PeakHeight="110.0" Num="3" Error="0.0">
-30.149 12.635 -2.931
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.946" EndFrequency="10.65" PeakHeight="323.789" Num="5" zHalfNm="220.019" Error="4.479">
-195.142 -14.235 9.297 -5.278 1.942
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.373" Depth="0.122"/>
<TopsideChapman PeakHeight="323.789" PeakDensity="1407227.0" PeakScaleHeight="75.6" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
