<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 15:40:00.000"
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="12.0">
<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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.20 (293) 15:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629310201540009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.353" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.411" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="435.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="435.000" 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="7.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" 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="3.362" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.347" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="409.680" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.988" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.159" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="227.348" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.452" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="125.698" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="255.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.810" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="37">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
435.000 440.000 445.000 450.000 455.000 460.000 465.000 470.000 477.000 484.000 491.000 498.000 505.000 512.000 519.000 526.000 533.000 540.000 550.000 555.000 562.500 570.000 577.849 586.354 595.603 605.696 616.754 628.924 642.382 657.343 674.074 692.910 714.274 738.711 766.937 799.905 838.923
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 -1.953125 0.390625 -1.953125 0.390625 0.390625 0.390625 2.734375 -1.953125 -1.953125 0.390625 -0.390625 1.171875 1.953125 0.390625 0.390625 0.390625 0.390625 -0.390625 1.953125 0.390625 -1.171875 0.390625 -1.171875 -1.171875 2.734375 0.390625 2.734375 0.390625 1.171875 -1.953125 -1.171875 2.734375 -1.171875 -1.953125 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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.666 113.333 114.999 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 409.68 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.262 2.91 3.252 3.362 3.239 3.239 3.362 3.362 3.484 3.601 3.717 3.831 3.947 4.063 4.181 4.3 4.422 4.545 4.671 4.798 4.927 5.058 5.189 5.322 5.454 5.587 5.718 5.85 5.98 6.108 6.235 6.361 6.484 6.606 6.725 6.842 6.958 7.071 7.182 7.291 7.397 7.502 7.604 7.704 7.802 7.898 7.991 8.082 8.171 8.257 8.34 8.421 8.498 8.572 8.643 8.71 8.773 8.831 8.885 8.933 8.976 9.014 9.045 9.069 9.086 9.097 9.1 9.1 9.098 9.094 9.087 9.078 9.065 9.051 9.034 9.015 8.993 8.97 8.944 8.916 8.887 8.855 8.822 8.787 8.75 8.711 8.671 8.63 8.587 8.543 8.497 8.451 8.403 8.354 8.304 8.253 8.201 8.148 8.094 8.04 7.984 7.928 7.872 7.815 7.757 7.699 7.64 7.581 7.521 7.461 7.401 7.34 7.279 7.218 7.157 7.095 7.034 6.972 6.91 6.849 6.787 6.725 6.663 6.602 6.54 6.478 6.417 6.356 6.294 6.233 6.173 6.112 6.051 5.991 5.931 5.872 5.812 5.753 5.694 5.636 5.578 5.52 5.462 5.405 5.348 5.291 5.235 5.18 5.124 5.069 5.015 4.96 4.906 4.853 4.8 4.747 4.695 4.643 4.592 4.541 4.491 4.441 4.391 4.342 4.293 4.244 4.197 4.149 4.102 4.055 4.009 3.963 3.918 3.873 3.829 3.785 3.741 3.698 3.655 3.613 3.571 3.529 3.488 3.447 3.407 3.367

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.362" PeakHeight="110.0" Num="3" Error="0.0">
-30.48 13.121 -3.153
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.362" EndFrequency="9.1" PeakHeight="409.68" Num="5" zHalfNm="237.988" Error="5.086">
-284.304 -17.089 10.117 -5.407 2.002
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.999" Depth="0.123"/>
<TopsideChapman PeakHeight="409.68" PeakDensity="1027419.4" PeakScaleHeight="125.698" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
