<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 17:50:00.000"
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" >
2026.10.23 (296) 17:50:00</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">
FF202629610231750009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.639" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.408" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="420.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="420.000" 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="11.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="2.995" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.171" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="335.412" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="232.028" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.097" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.126" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.860" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.023" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="157.290" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="36">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
420.000 420.000 422.500 425.000 425.000 430.000 435.000 435.000 445.000 445.000 445.000 445.000 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 470.000 470.000 475.000 475.000 485.000 490.000 495.000 495.000 500.000 505.000 512.605 521.670 532.664 546.272 563.555 586.232
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 0 0 0 60 0 45 48 54 48 51 0 0 0 0 45 0 45 57 60 60 0 57 0 54 60 60 57 0 0 0 0 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 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 0.390625 0.390625 0.390625 -1.171875 -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" >
89.546 90.0 95.0 100.0 105.0 110.0 113.239 115.0 116.477 119.716 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 335.412 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.013 2.592 2.898 2.995 2.873 2.873 2.873 2.995 3.007 3.212 3.41 3.609 3.813 4.025 4.246 4.478 4.721 4.973 5.234 5.501 5.772 6.044 6.314 6.582 6.846 7.105 7.359 7.607 7.85 8.088 8.321 8.55 8.774 8.995 9.211 9.424 9.634 9.84 10.042 10.241 10.437 10.628 10.814 10.994 11.167 11.33 11.482 11.617 11.732 11.821 11.878 11.9 11.9 11.896 11.881 11.857 11.823 11.781 11.73 11.671 11.605 11.532 11.453 11.367 11.276 11.179 11.078 10.971 10.861 10.747 10.63 10.509 10.386 10.26 10.132 10.002 9.87 9.737 9.603 9.467 9.331 9.195 9.058 8.921 8.783 8.646 8.509 8.373 8.237 8.101 7.967 7.833 7.7 7.568 7.437 7.308 7.179 7.052 6.926 6.802 6.679 6.557 6.437 6.319 6.201 6.086 5.972 5.86 5.749 5.64 5.532 5.427 5.322 5.22 5.119 5.02 4.922 4.826 4.731 4.638 4.547 4.457 4.369 4.283 4.197 4.114 4.032 3.951 3.872 3.794 3.718 3.643 3.57 3.498 3.427 3.358 3.289 3.223 3.157 3.093 3.03 2.968 2.908 2.848 2.79 2.733 2.677 2.622 2.568 2.515 2.464 2.413 2.363 2.315 2.267 2.22 2.174 2.13 2.086 2.043 2.0 1.959 1.918 1.879 1.84 1.802 1.764 1.728 1.692 1.657 1.623 1.589 1.556 1.524 1.492 1.461 1.431 1.401 1.372 1.343 1.315 1.288 1.261 1.235 1.209 1.184

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.995" PeakHeight="110.0" Num="3" Error="0.0">
-30.191 12.696 -2.959
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.995" EndFrequency="11.9" PeakHeight="335.412" Num="5" zHalfNm="232.028" Error="3.919">
-200.759 -25.546 16.529 -8.574 2.654
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.716" Depth="0.122"/>
<TopsideChapman PeakHeight="335.412" PeakDensity="1756947.9" PeakScaleHeight="74.023" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
