<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 09:10:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 80% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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) 09:10:00</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">
FF202629210190910009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.436" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.597" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="295.511" 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="1.760" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="248.286" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="194.519" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.170" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="75.083" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.018" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="40.706" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="77.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.110" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="32">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.9 5.95 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 261.250 262.500 263.750 265.000 270.000 270.000 270.000 270.000 275.000 275.000 275.000 280.000 280.000 281.234 282.603 284.130 285.846 287.787 290.000 292.547 295.511 299.001 303.173 308.247 314.552 322.597 333.218 347.888 369.468 404.343 470.270
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 75 54 78 66 72 72 75 66 69 69 66 72 75 69 69 63 60 51 0 57 69 69 72 69 72 75 69 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 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="144">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.835 90.0 95.0 100.0 105.0 110.0 115.0 119.589 120.0 125.0 129.179 130.0 135.0 138.768 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 248.286 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.214 1.178 1.524 1.703 1.76 1.723 1.622 1.622 1.622 1.622 1.634 1.706 1.76 1.817 2.063 2.331 2.617 2.918 3.233 3.559 3.897 4.243 4.596 4.95 5.301 5.643 5.97 6.274 6.551 6.795 7.003 7.173 7.303 7.393 7.441 7.45 7.449 7.431 7.393 7.338 7.266 7.18 7.082 6.971 6.851 6.723 6.588 6.446 6.3 6.15 5.998 5.843 5.688 5.531 5.375 5.22 5.066 4.913 4.762 4.613 4.467 4.323 4.182 4.045 3.91 3.779 3.65 3.526 3.404 3.286 3.171 3.06 2.952 2.847 2.746 2.648 2.552 2.46 2.371 2.285 2.202 2.122 2.044 1.969 1.897 1.827 1.76 1.695 1.632 1.572 1.514 1.458 1.403 1.351 1.301 1.252 1.206 1.161 1.117 1.076 1.035 0.997 0.959 0.924 0.889 0.856 0.824 0.793 0.763 0.734 0.707 0.68 0.655 0.63 0.606 0.584 0.562 0.541 0.52 0.501 0.482 0.464 0.446 0.43 0.413 0.398 0.383 0.368 0.355 0.341 0.328 0.316 0.304 0.293 0.282 0.271 0.261 0.251 0.242 0.233 0.224 0.215 0.207

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.76" PeakHeight="110.0" Num="3" Error="0.0">
-28.663 10.579 -2.081
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.76" EndFrequency="7.45" PeakHeight="248.286" Num="5" zHalfNm="194.519" Error="1.322">
-110.264 1.409 -1.088 0.656 -0.231
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="28.768" Depth="0.138"/>
<TopsideChapman PeakHeight="248.286" PeakDensity="688616.6" PeakScaleHeight="40.706" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
