<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 16:40:00.000"
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) 16:40:00</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">
FF202629710241640009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.521" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.088" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="505.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="505.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" 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="3.242" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.291" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="351.976" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="224.039" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.652" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="173.267" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.222" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="94.773" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="187.580" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.900" 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" >
9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
505.000 510.000 515.000 525.000 533.899 544.062 555.778 569.434 585.554 604.871 628.442 657.846 695.552
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 45 0 51 0 48 48 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 2.734375 -1.953125 2.734375
</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" >
89.507 90.0 95.0 100.0 105.0 110.0 112.167 114.333 115.0 116.5 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 351.976 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.18 2.806 3.136 3.242 3.12 3.12 3.158 3.242 3.359 3.526 3.693 3.862 4.034 4.211 4.392 4.577 4.766 4.959 5.156 5.355 5.557 5.76 5.964 6.168 6.37 6.572 6.772 6.969 7.164 7.355 7.544 7.728 7.91 8.087 8.26 8.429 8.593 8.753 8.908 9.057 9.201 9.339 9.47 9.595 9.712 9.821 9.922 10.014 10.096 10.167 10.228 10.276 10.313 10.337 10.349 10.35 10.349 10.343 10.331 10.315 10.293 10.267 10.236 10.201 10.162 10.118 10.071 10.021 9.966 9.909 9.848 9.785 9.719 9.65 9.578 9.505 9.429 9.352 9.272 9.191 9.108 9.024 8.939 8.852 8.764 8.676 8.586 8.496 8.405 8.313 8.221 8.129 8.036 7.943 7.85 7.757 7.664 7.57 7.477 7.384 7.292 7.199 7.107 7.015 6.924 6.833 6.742 6.653 6.563 6.474 6.386 6.299 6.212 6.125 6.04 5.955 5.871 5.788 5.705 5.623 5.543 5.462 5.383 5.305 5.227 5.15 5.074 4.999 4.925 4.852 4.779 4.708 4.637 4.567 4.498 4.43 4.362 4.296 4.23 4.166 4.102 4.039 3.976 3.915 3.855 3.795 3.736 3.678 3.621 3.564 3.508 3.454 3.399 3.346 3.294 3.242 3.191 3.14 3.091 3.042 2.994 2.946 2.9 2.853 2.808 2.763 2.719 2.676 2.633 2.591 2.55 2.509 2.469 2.43 2.391 2.352 2.315 2.277 2.241 2.205 2.169 2.134 2.1 2.066 2.033 2.0

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.242" PeakHeight="110.0" Num="3" Error="0.0">
-30.39 12.989 -3.092
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.242" EndFrequency="10.35" PeakHeight="351.976" Num="5" zHalfNm="224.039" Error="2.346">
-231.28 -7.201 4.693 -2.648 0.96
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.5" Depth="0.122"/>
<TopsideChapman PeakHeight="351.976" PeakDensity="1329063.2" PeakScaleHeight="94.773" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
