<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 16:50:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2x cusp not found, 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" >
2026.10.30 (303) 16:50:00</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">
FF202630310301650009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.397" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.177" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="575.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="575.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="575.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.207" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.274" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="358.741" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="220.617" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.728" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="187.066" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.104" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="103.163" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="201.020" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.990" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="6">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.0 9.05 9.1 9.15 9.2 9.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
575.000 596.086 621.729 653.586 694.226 747.862
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 51 54 51 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
</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" >
89.511 90.0 95.0 100.0 105.0 110.0 112.316 114.633 115.0 116.949 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 358.741 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.157 2.776 3.103 3.207 3.085 3.085 3.104 3.207 3.295 3.439 3.586 3.735 3.886 4.04 4.196 4.355 4.516 4.68 4.845 5.012 5.18 5.349 5.518 5.687 5.856 6.024 6.191 6.357 6.521 6.683 6.842 6.999 7.153 7.303 7.45 7.594 7.733 7.868 7.999 8.125 8.245 8.36 8.47 8.574 8.671 8.761 8.845 8.922 8.991 9.052 9.106 9.151 9.188 9.217 9.237 9.248 9.25 9.25 9.247 9.239 9.228 9.213 9.195 9.172 9.147 9.118 9.086 9.051 9.013 8.972 8.928 8.882 8.834 8.783 8.731 8.676 8.619 8.56 8.5 8.438 8.375 8.31 8.244 8.177 8.108 8.039 7.968 7.897 7.825 7.752 7.678 7.604 7.529 7.454 7.379 7.303 7.227 7.151 7.075 6.998 6.922 6.845 6.769 6.692 6.616 6.54 6.464 6.388 6.312 6.237 6.162 6.088 6.013 5.94 5.866 5.793 5.721 5.649 5.577 5.506 5.436 5.366 5.297 5.228 5.159 5.092 5.025 4.958 4.892 4.827 4.763 4.699 4.635 4.573 4.511 4.449 4.388 4.328 4.269 4.21 4.152 4.094 4.037 3.981 3.926 3.871 3.817 3.763 3.71 3.658 3.606 3.555 3.504 3.455 3.405 3.357 3.309 3.262 3.215 3.169 3.123 3.078 3.034 2.99 2.947 2.904 2.862 2.821 2.78 2.74 2.7 2.66 2.622 2.583 2.546 2.508 2.472 2.436 2.4 2.365 2.33 2.296 2.262 2.229 2.196 2.164

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.207" PeakHeight="110.0" Num="3" Error="0.0">
-30.363 12.948 -3.074
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.207" EndFrequency="9.25" PeakHeight="358.741" Num="5" zHalfNm="220.617" Error="1.11">
-240.462 -2.274 1.469 -0.844 0.319
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.949" Depth="0.122"/>
<TopsideChapman PeakHeight="358.741" PeakDensity="1061569.5" PeakScaleHeight="103.163" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
