<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 09:50:00.000"
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="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: 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" >
2026.10.22 (295) 09:50:00</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">
FF202629510220950009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.373" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.295" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="7.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="307.458" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.293" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="248.284" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="184.230" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.230" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="88.056" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="14.446" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="48.358" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="92.220" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 7.45 7.5
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 290.000 292.500 295.000 296.884 299.013 301.437 304.223 307.458 311.261 315.794 321.290 328.094 336.736 348.074 363.607 386.187 422.021 487.625
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 72 0 0 0 0 0 0 0 0 0 0 63 0 63 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 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="165">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.685 90.0 95.0 100.0 105.0 110.0 115.0 116.636 120.0 123.273 125.0 129.909 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 248.284 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.539 1.986 2.219 2.293 2.221 2.166 2.166 2.166 2.199 2.293 2.297 2.532 2.782 3.044 3.316 3.594 3.88 4.17 4.464 4.76 5.055 5.348 5.634 5.911 6.174 6.42 6.646 6.849 7.027 7.178 7.301 7.395 7.459 7.494 7.5 7.499 7.486 7.459 7.419 7.366 7.303 7.229 7.146 7.055 6.956 6.851 6.741 6.625 6.506 6.383 6.257 6.128 5.998 5.867 5.735 5.603 5.471 5.339 5.207 5.077 4.947 4.819 4.693 4.568 4.445 4.324 4.205 4.088 3.973 3.861 3.751 3.643 3.538 3.435 3.335 3.237 3.141 3.048 2.957 2.868 2.782 2.698 2.616 2.537 2.459 2.384 2.311 2.24 2.171 2.105 2.04 1.976 1.915 1.856 1.798 1.742 1.688 1.635 1.584 1.534 1.486 1.44 1.394 1.351 1.308 1.267 1.227 1.189 1.151 1.115 1.08 1.046 1.013 0.981 0.95 0.92 0.89 0.862 0.835 0.809 0.783 0.758 0.734 0.711 0.688 0.667 0.645 0.625 0.605 0.586 0.567 0.549 0.532 0.515 0.499 0.483 0.468 0.453 0.438 0.424 0.411 0.398 0.385 0.373 0.361 0.35 0.339 0.328 0.317 0.307 0.298 0.288 0.279 0.27 0.261 0.253 0.245 0.237 0.23 0.222 0.215 0.209 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.293" PeakHeight="110.0" Num="3" Error="0.0">
-29.472 11.67 -2.513
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.293" EndFrequency="7.5" PeakHeight="248.284" Num="5" zHalfNm="184.23" Error="1.033">
-119.033 1.201 -0.876 0.509 -0.176
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.909" Depth="0.127"/>
<TopsideChapman PeakHeight="248.284" PeakDensity="697890.8" PeakScaleHeight="48.358" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
