<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 15:00:00.000"
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) 15:00:00</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">
FF202629710241500009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.456" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.520" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="490.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="490.000" 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="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" 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="3.390" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.360" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="354.320" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.018" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.844" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="166.539" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.773" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.210" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="194.510" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="25">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
490.000 495.000 495.000 500.000 500.000 500.000 505.000 510.000 515.000 520.000 525.000 530.000 535.000 540.000 540.000 545.000 551.294 558.253 565.987 574.635 584.368 595.404 608.023 622.593 639.603
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 48 54 51 54 54 54 57 54 51 45 42 0 45 54 48 0 0 45 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 -1.953125 -1.953125 -0.390625 0.390625 1.953125 -2.734375 -2.734375 0.390625 -1.953125
</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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.551 113.103 114.654 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 354.32 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.281 2.934 3.28 3.39 3.267 3.267 3.39 3.403 3.58 3.747 3.911 4.077 4.246 4.42 4.6 4.787 4.981 5.181 5.385 5.594 5.803 6.013 6.221 6.427 6.628 6.825 7.018 7.205 7.388 7.566 7.74 7.91 8.075 8.238 8.397 8.552 8.705 8.855 9.003 9.147 9.29 9.43 9.568 9.703 9.836 9.965 10.091 10.212 10.328 10.438 10.538 10.627 10.701 10.757 10.791 10.8 10.8 10.796 10.786 10.769 10.747 10.72 10.687 10.649 10.606 10.559 10.507 10.451 10.391 10.328 10.26 10.19 10.116 10.04 9.961 9.879 9.795 9.709 9.62 9.53 9.438 9.345 9.25 9.154 9.057 8.959 8.86 8.76 8.66 8.559 8.457 8.356 8.254 8.151 8.049 7.947 7.845 7.743 7.641 7.54 7.439 7.338 7.238 7.138 7.039 6.94 6.842 6.745 6.648 6.552 6.457 6.363 6.27 6.177 6.085 5.994 5.904 5.815 5.727 5.64 5.554 5.468 5.384 5.301 5.218 5.137 5.057 4.977 4.899 4.822 4.745 4.67 4.595 4.522 4.45 4.378 4.308 4.238 4.17 4.102 4.036 3.97 3.905 3.841 3.779 3.717 3.656 3.596 3.536 3.478 3.421 3.364 3.309 3.254 3.2 3.147 3.094 3.043 2.992 2.942 2.893 2.845 2.797 2.75 2.704 2.659 2.614 2.57 2.527 2.484 2.443 2.401 2.361 2.321 2.282 2.243 2.205 2.168 2.131 2.095 2.06 2.025 1.991 1.957 1.924 1.891

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.39" PeakHeight="110.0" Num="3" Error="0.0">
-30.5 13.151 -3.167
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.39" EndFrequency="10.8" PeakHeight="354.32" Num="5" zHalfNm="227.018" Error="5.754">
-221.482 -31.044 20.027 -10.492 3.325
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.654" Depth="0.123"/>
<TopsideChapman PeakHeight="354.32" PeakDensity="1447146.4" PeakScaleHeight="90.21" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
