<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 17:00:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, F2 cusps do not match</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" >
2026.10.26 (299) 17:00:00</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">
FF202629910261700009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.092" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.878" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="385.830" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.182" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.263" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="247.928" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="166.634" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.799" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="93.745" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.734" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="53.109" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="135.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="21">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 355.000 355.000 357.273 359.545 361.818 364.091 366.364 368.636 370.909 373.182 375.455 377.727 380.000 375.000 380.000 382.758 385.830 389.271 393.154 397.569
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 69 57 0 0 0 0 0 0 0 0 0 0 54 0 63 60 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 1.953125 -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="177">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.516 90.0 95.0 100.0 105.0 110.0 112.422 114.844 115.0 117.266 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 247.928 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.14 2.754 3.078 3.182 3.06 3.06 3.068 3.182 3.292 3.488 3.689 3.9 4.123 4.351 4.575 4.789 4.989 5.175 5.348 5.509 5.661 5.806 5.945 6.078 6.208 6.334 6.459 6.583 6.706 6.831 6.958 7.089 7.225 7.359 7.4 7.399 7.388 7.364 7.33 7.286 7.233 7.17 7.1 7.023 6.939 6.849 6.755 6.655 6.552 6.445 6.335 6.223 6.109 5.993 5.875 5.757 5.639 5.52 5.401 5.282 5.164 5.046 4.93 4.814 4.7 4.587 4.475 4.365 4.256 4.15 4.044 3.941 3.84 3.74 3.643 3.547 3.453 3.362 3.272 3.184 3.098 3.014 2.932 2.852 2.774 2.698 2.624 2.551 2.48 2.411 2.344 2.279 2.215 2.153 2.092 2.033 1.976 1.92 1.866 1.813 1.762 1.712 1.663 1.616 1.57 1.525 1.481 1.439 1.398 1.358 1.319 1.281 1.244 1.209 1.174 1.14 1.107 1.076 1.045 1.015 0.985 0.957 0.929 0.903 0.877 0.851 0.827 0.803 0.78 0.757 0.735 0.714 0.693 0.673 0.654 0.635 0.617 0.599 0.581 0.565 0.548 0.532 0.517 0.502 0.488 0.473 0.46 0.446 0.433 0.421 0.409 0.397 0.385 0.374 0.363 0.353 0.343 0.333 0.323 0.314 0.305 0.296 0.287 0.279 0.271 0.263 0.255 0.248 0.241 0.234 0.227 0.22 0.214 0.208 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.182" PeakHeight="110.0" Num="3" Error="0.0">
-30.343 12.92 -3.061
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.182" EndFrequency="7.4" PeakHeight="247.928" Num="5" zHalfNm="166.634" Error="3.577">
-107.901 -38.369 23.735 -10.526 2.399
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.266" Depth="0.122"/>
<TopsideChapman PeakHeight="247.928" PeakDensity="679404.44" PeakScaleHeight="53.109" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
