<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 14:20:00.000"
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="15.0">
<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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.10.19 (292) 14:20:00</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">
FF202629210191420009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.694" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.118" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="11.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" 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="3.394" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.362" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="344.987" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.402" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.564" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="122.493" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.697" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="69.717" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="166.610" 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="112">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 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 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 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 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 337.500 340.000 340.000 345.000 346.600 348.200 349.800 351.400 353.000 354.600 356.200 357.800 359.400 361.000 362.600 364.200 365.800 367.400 369.000 370.600 372.200 373.800 375.400 377.000 378.600 380.200 381.800 383.400 385.000 386.600 388.200 389.800 391.400 393.000 394.600 396.200 397.800 399.400 401.000 402.600 404.200 405.800 407.400 409.000 410.600 412.200 413.800 415.400 417.000 418.600 420.200 421.800 423.400 425.000 426.600 428.200 429.800 431.400 433.000 434.600 436.200 437.800 439.400 441.000 442.600 444.200 445.800 447.400 449.000 450.600 452.200 453.800 455.400 457.000 458.600 460.200 461.800 463.400 465.000 470.000 476.988 484.845 493.744 503.907 515.623 529.279 545.399 564.717 588.288
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 66 66 63 63 63 63 63 66 66 66 66 66 66 60 66 60 60 63 0 0 69 0 66 69 57 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 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 45 57 54 48 54 48 45 45 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 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 -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 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -0.390625 -1.171875 -2.734375 2.734375 1.953125 -0.390625 -1.953125 -1.953125 1.171875 -0.390625 2.734375 1.171875 -1.953125 -2.734375 -0.390625 -0.390625 -2.734375 -0.390625 -0.390625 1.171875 -2.734375 1.953125 2.734375 -0.390625 1.171875 1.171875 1.171875 1.171875 1.953125 -0.390625 -0.390625 2.734375 -2.734375 0.390625 -1.953125 1.171875 -1.953125 -1.953125 -1.953125 1.953125 -1.953125 0.390625 -1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -2.734375 2.734375
</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" >
89.483 90.0 95.0 100.0 105.0 110.0 111.535 113.071 114.606 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 344.987 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.283 2.937 3.283 3.394 3.271 3.271 3.394 3.411 3.623 3.82 4.007 4.185 4.358 4.527 4.692 4.856 5.017 5.178 5.338 5.498 5.659 5.82 5.982 6.146 6.311 6.478 6.648 6.82 6.994 7.172 7.352 7.537 7.724 7.916 8.111 8.311 8.515 8.724 8.936 9.153 9.373 9.595 9.82 10.045 10.268 10.487 10.698 10.897 11.079 11.239 11.37 11.469 11.529 11.55 11.55 11.544 11.527 11.5 11.463 11.416 11.36 11.296 11.224 11.144 11.058 10.966 10.867 10.763 10.654 10.541 10.423 10.301 10.177 10.049 9.919 9.786 9.651 9.515 9.377 9.238 9.098 8.957 8.816 8.675 8.533 8.392 8.251 8.11 7.97 7.831 7.692 7.555 7.418 7.283 7.149 7.016 6.884 6.754 6.626 6.499 6.373 6.249 6.127 6.006 5.888 5.771 5.655 5.542 5.43 5.32 5.212 5.105 5.001 4.898 4.797 4.697 4.6 4.504 4.41 4.318 4.227 4.138 4.051 3.965 3.881 3.799 3.718 3.639 3.561 3.485 3.41 3.337 3.265 3.195 3.126 3.059 2.993 2.928 2.865 2.803 2.742 2.682 2.624 2.567 2.511 2.456 2.403 2.35 2.299 2.249 2.2 2.152 2.104 2.058 2.013 1.969 1.926 1.884 1.842 1.802 1.762 1.724 1.686 1.649 1.612 1.577 1.542 1.508 1.475 1.442 1.411 1.38 1.349 1.319 1.29 1.262 1.234 1.207 1.18 1.154 1.129 1.104 1.079 1.055 1.032 1.009

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.394" PeakHeight="110.0" Num="3" Error="0.0">
-30.503 13.155 -3.169
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.394" EndFrequency="11.55" PeakHeight="344.987" Num="5" zHalfNm="251.402" Error="2.395">
-193.036 -52.405 13.323 2.555 -0.818
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.606" Depth="0.123"/>
<TopsideChapman PeakHeight="344.987" PeakDensity="1655117.9" PeakScaleHeight="69.717" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
