<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 17:20:00.000"
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="13.0">
<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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2o cusp not found, 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) 17:20:00</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">
FF202629210191720009039031101000005013000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.113" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.102" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="360.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="360.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="381.243" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.124" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.234" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="246.873" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="167.133" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.929" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="91.273" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="14.346" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="52.463" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="135.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.140" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 360.000 365.000 365.000 366.014 367.145 368.415 369.852 371.490 373.376 375.570 378.155 381.243 385.000 389.668 395.624
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 72 78 75 69 69 69 60 0 69 0 60 69 60 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="174">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.525 90.0 95.0 100.0 105.0 110.0 112.672 115.0 115.345 118.017 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 246.873 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.101 2.704 3.022 3.124 3.002 3.002 3.002 3.124 3.2 3.386 3.576 3.772 3.975 4.182 4.387 4.585 4.772 4.948 5.114 5.271 5.42 5.562 5.699 5.831 5.959 6.085 6.209 6.332 6.455 6.579 6.706 6.836 6.969 7.085 7.1 7.098 7.084 7.059 7.023 6.978 6.923 6.861 6.79 6.713 6.63 6.541 6.447 6.349 6.248 6.143 6.035 5.925 5.813 5.7 5.586 5.471 5.356 5.24 5.125 5.01 4.895 4.781 4.669 4.557 4.447 4.338 4.23 4.124 4.02 3.917 3.816 3.717 3.619 3.524 3.431 3.339 3.249 3.162 3.076 2.992 2.91 2.83 2.752 2.676 2.602 2.529 2.458 2.389 2.322 2.257 2.193 2.131 2.07 2.011 1.954 1.898 1.844 1.791 1.74 1.69 1.641 1.594 1.548 1.504 1.46 1.418 1.377 1.337 1.298 1.261 1.224 1.189 1.154 1.121 1.088 1.056 1.026 0.996 0.967 0.938 0.911 0.885 0.859 0.834 0.809 0.786 0.763 0.74 0.719 0.698 0.677 0.658 0.638 0.62 0.601 0.584 0.567 0.55 0.534 0.518 0.503 0.489 0.474 0.46 0.447 0.434 0.421 0.409 0.397 0.385 0.374 0.363 0.352 0.342 0.332 0.322 0.313 0.303 0.295 0.286 0.278 0.269 0.262 0.254 0.246 0.239 0.232 0.225 0.219 0.212 0.206 0.2

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.124" PeakHeight="110.0" Num="3" Error="0.0">
-30.297 12.852 -3.03
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.124" EndFrequency="7.1" PeakHeight="246.873" Num="5" zHalfNm="167.133" Error="3.134">
-105.624 -37.812 21.574 -8.936 1.942
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.017" Depth="0.122"/>
<TopsideChapman PeakHeight="246.873" PeakDensity="625434.25" PeakScaleHeight="52.463" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
