<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 19:50:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.10.29 (302) 19:50:00</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">
FF202630210291950009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.526" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.759" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="465.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="465.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" 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="2.088" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="378.737" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.850" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.474" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="159.847" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.338" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.502" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.870" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.930" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
465.000 465.000 470.000 470.000 470.000 475.000 485.000 485.000 489.148 493.688 498.680 504.194 510.317 517.156 524.843 533.547 543.485 554.939 568.283 584.028 602.887 625.884 654.550 691.273
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 66 60 69 66 63 63 66 66 66 69 66 66 66 63 66 0 63 54 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 -0.390625 -0.390625 -1.171875 2.734375 -0.390625 -1.953125 -1.171875
</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" >
89.736 90.0 95.0 100.0 105.0 110.0 115.0 117.727 120.0 125.0 125.455 130.0 133.182 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 378.737 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.4 1.808 2.021 2.088 2.034 1.957 1.957 1.957 1.957 2.034 2.088 2.138 2.277 2.418 2.563 2.712 2.867 3.027 3.194 3.366 3.544 3.727 3.916 4.11 4.307 4.508 4.712 4.918 5.126 5.335 5.543 5.752 5.96 6.167 6.372 6.575 6.776 6.975 7.171 7.363 7.552 7.737 7.918 8.094 8.265 8.431 8.59 8.742 8.887 9.024 9.153 9.271 9.38 9.478 9.564 9.637 9.698 9.745 9.778 9.796 9.8 9.8 9.795 9.784 9.767 9.744 9.716 9.682 9.643 9.6 9.552 9.5 9.444 9.384 9.32 9.253 9.183 9.11 9.034 8.955 8.874 8.791 8.706 8.62 8.531 8.441 8.35 8.257 8.164 8.069 7.974 7.878 7.781 7.684 7.587 7.489 7.391 7.294 7.196 7.098 7.0 6.903 6.806 6.709 6.613 6.517 6.422 6.328 6.234 6.14 6.048 5.956 5.865 5.774 5.685 5.596 5.509 5.422 5.336 5.251 5.167 5.084 5.001 4.92 4.84 4.761 4.683 4.606 4.529 4.454 4.38 4.307 4.235 4.163 4.093 4.024 3.956 3.889 3.823 3.757 3.693 3.63 3.568 3.506 3.446 3.386 3.328 3.27 3.213 3.157 3.102 3.048 2.995 2.943 2.891 2.841 2.791 2.742 2.694 2.646 2.599 2.554 2.509 2.464 2.421 2.378 2.336 2.294 2.253 2.213 2.174 2.135 2.097 2.06 2.023 1.987 1.952 1.917 1.883 1.849 1.816 1.784 1.752 1.72 1.69 1.659

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.088" PeakHeight="110.0" Num="3" Error="0.0">
-29.198 11.293 -2.359
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.088" EndFrequency="9.8" PeakHeight="378.737" Num="5" zHalfNm="263.85" Error="1.692">
-241.597 -6.816 4.468 -2.501 0.891
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="23.182" Depth="0.131"/>
<TopsideChapman PeakHeight="378.737" PeakDensity="1191563.2" PeakScaleHeight="85.502" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
