<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 16:30:00.000"
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 1 0 0 0 0 0 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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) 16:30:00</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">
FF202629610231630009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="11.175" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="10" Val="10.173" Name="foF1" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.547" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.399" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="455.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="485.000" 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="88" Val="10.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.025" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="3.268" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.304" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="327.587" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="91" Val="285.661" Name="hmF1" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="208.747" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.574" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="80.235" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="95" Val="122.214" Name="yF1" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.121" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.112" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="159.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.620" Name="B1" QL="/" DL="/" />
<URSI ID="D2" Val="0.150" Name="D1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
485.000 485.000 485.000 485.000 490.000 495.000 500.000 505.000 510.000 515.000 520.000 525.000 530.000 540.000 545.000 553.750 562.500 571.250 580.000 590.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 -1.953125 -0.390625 -0.390625 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="F1" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
460.000 455.000 460.000 465.000 465.000 468.750 472.500 476.250 480.000 480.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 60 63 0 0 0 57 57
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="189">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.502 90.0 95.0 100.0 105.0 110.0 112.056 114.112 115.0 116.168 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 285.661 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 327.587 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.198 2.828 3.162 3.268 3.146 3.146 3.199 3.268 3.455 3.68 3.9 4.125 4.359 4.603 4.86 5.127 5.403 5.682 5.962 6.239 6.509 6.772 7.026 7.271 7.507 7.736 7.957 8.17 8.377 8.577 8.771 8.959 9.139 9.312 9.477 9.632 9.775 9.903 10.011 10.095 10.151 10.173 10.173 10.399 10.541 10.659 10.768 10.872 10.975 11.076 11.159 11.175 11.174 11.166 11.151 11.128 11.098 11.062 11.019 10.97 10.916 10.856 10.791 10.721 10.646 10.568 10.485 10.399 10.309 10.216 10.12 10.022 9.921 9.817 9.712 9.605 9.496 9.386 9.274 9.162 9.048 8.934 8.819 8.704 8.588 8.472 8.355 8.239 8.123 8.007 7.892 7.776 7.662 7.547 7.434 7.321 7.208 7.097 6.986 6.876 6.767 6.659 6.552 6.447 6.342 6.238 6.135 6.034 5.933 5.834 5.736 5.64 5.544 5.45 5.357 5.265 5.174 5.085 4.997 4.91 4.824 4.74 4.657 4.575 4.494 4.414 4.336 4.259 4.183 4.109 4.035 3.963 3.892 3.822 3.753 3.685 3.618 3.553 3.488 3.425 3.363 3.301 3.241 3.182 3.124 3.067 3.01 2.955 2.901 2.848 2.795 2.744 2.693 2.643 2.595 2.547 2.5 2.453 2.408 2.363 2.319 2.276 2.234 2.193 2.152 2.112 2.073 2.034 1.996 1.959 1.922 1.887 1.851 1.817 1.783 1.75 1.717 1.685 1.653 1.622 1.592 1.562 1.533 1.504 1.476 1.449 1.421

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="3" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.268" PeakHeight="110.0" Num="3" Error="0.0">
-30.41 13.018 -3.106
</ShiftedChebyshev>
<ShiftedChebyshev Region="F1" StartFrequency="3.268" EndFrequency="10.173" PeakHeight="285.661" Num="5" Error="0.0">
-160.707 -15.119 9.886 -5.611 2.058
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="10.173" EndFrequency="11.175" PeakHeight="327.587" Num="5" zHalfNm="208.747" Error="6.183">
-34.994 -11.136 3.818 0.386 0.0
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.168" Depth="0.122"/>
<TopsideChapman PeakHeight="327.587" PeakDensity="1549387.4" PeakScaleHeight="82.112" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
