<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 17:10:00.000"
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: 90% PACIFIC flags: 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" >
2026.10.19 (292) 17:10:00</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">
FF202629210191710009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="6.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.089" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.466" 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="7.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="380.000" 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="3.159" 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="4.251" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="246.528" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="163.269" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.866" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="94.745" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="14.211" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="54.454" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="141.590" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.150" 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" >
6.0 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 370.000 375.000 377.500 380.000 380.000 384.178 389.369 395.992 404.736
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 72 72 75 72 0 66 63 66 69 66 69 0 66 69 60 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 2.734375 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="178">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.519 90.0 95.0 100.0 105.0 110.0 112.52 115.0 115.041 117.561 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 246.528 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.124 2.734 3.056 3.159 3.037 3.037 3.037 3.159 3.248 3.431 3.622 3.822 4.029 4.237 4.438 4.628 4.805 4.97 5.124 5.269 5.406 5.536 5.662 5.783 5.901 6.017 6.131 6.244 6.358 6.472 6.589 6.71 6.834 6.94 6.95 6.947 6.934 6.911 6.878 6.835 6.785 6.727 6.662 6.591 6.514 6.432 6.345 6.254 6.159 6.061 5.961 5.859 5.754 5.648 5.541 5.433 5.324 5.215 5.106 4.998 4.889 4.781 4.674 4.568 4.463 4.358 4.255 4.154 4.054 3.955 3.858 3.762 3.668 3.576 3.485 3.396 3.309 3.224 3.14 3.058 2.978 2.9 2.823 2.748 2.675 2.604 2.534 2.466 2.399 2.334 2.271 2.209 2.149 2.09 2.033 1.977 1.923 1.87 1.819 1.769 1.72 1.672 1.626 1.581 1.537 1.494 1.453 1.412 1.373 1.335 1.297 1.261 1.226 1.192 1.158 1.126 1.094 1.064 1.034 1.005 0.976 0.949 0.922 0.896 0.871 0.847 0.823 0.8 0.777 0.755 0.734 0.713 0.693 0.674 0.655 0.636 0.618 0.601 0.584 0.567 0.551 0.536 0.521 0.506 0.492 0.478 0.464 0.451 0.439 0.426 0.414 0.402 0.391 0.38 0.369 0.359 0.349 0.339 0.329 0.32 0.311 0.302 0.294 0.285 0.277 0.269 0.262 0.254 0.247 0.24 0.233 0.227 0.22 0.214 0.208 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.159" PeakHeight="110.0" Num="3" Error="0.0">
-30.325 12.893 -3.049
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.159" EndFrequency="6.95" PeakHeight="246.528" Num="5" zHalfNm="163.269" Error="3.026">
-106.409 -37.689 22.712 -9.497 1.916
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.561" Depth="0.122"/>
<TopsideChapman PeakHeight="246.528" PeakDensity="599286.6" PeakScaleHeight="54.454" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
