<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 10:00:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x 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" >
2026.10.22 (295) 10:00:00</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">
FF202629510221000009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.243" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.650" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="337.490" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.391" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="253.683" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="186.503" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.419" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="89.862" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.182" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.110" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="100.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 305.000 310.000 315.000 320.000 320.000 320.000 325.000 330.000 333.482 337.490 342.152 347.644 354.207 362.190 372.109 384.766 401.474 424.553
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 0 45 60 75 75 72 0 75 72 75 60 72 0 72 0 72 72
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -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 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="168">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.663 90.0 95.0 100.0 105.0 110.0 115.0 116.133 120.0 122.265 125.0 128.398 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 253.683 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.228 1.605 2.07 2.314 2.391 2.308 2.265 2.265 2.265 2.321 2.391 2.464 2.691 2.923 3.166 3.42 3.685 3.958 4.233 4.507 4.777 5.042 5.298 5.547 5.788 6.02 6.243 6.457 6.66 6.853 7.032 7.194 7.336 7.453 7.539 7.589 7.6 7.599 7.588 7.563 7.524 7.473 7.411 7.339 7.258 7.169 7.072 6.968 6.859 6.745 6.627 6.505 6.38 6.253 6.124 5.993 5.862 5.73 5.598 5.466 5.335 5.204 5.074 4.946 4.819 4.693 4.57 4.448 4.328 4.21 4.094 3.981 3.87 3.761 3.654 3.55 3.448 3.349 3.251 3.157 3.064 2.974 2.886 2.801 2.717 2.636 2.557 2.481 2.406 2.333 2.263 2.194 2.128 2.063 2.0 1.939 1.88 1.822 1.766 1.712 1.659 1.608 1.559 1.511 1.464 1.419 1.375 1.332 1.291 1.251 1.212 1.175 1.138 1.103 1.068 1.035 1.003 0.972 0.942 0.912 0.884 0.856 0.83 0.804 0.779 0.754 0.731 0.708 0.686 0.664 0.644 0.624 0.604 0.585 0.567 0.549 0.532 0.515 0.499 0.484 0.469 0.454 0.44 0.426 0.413 0.4 0.387 0.375 0.363 0.352 0.341 0.33 0.32 0.31 0.3 0.291 0.282 0.273 0.264 0.256 0.248 0.24 0.233 0.226 0.218 0.212 0.205

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.391" PeakHeight="110.0" Num="3" Error="0.0">
-29.59 11.835 -2.582
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.391" EndFrequency="7.6" PeakHeight="253.683" Num="5" zHalfNm="186.503" Error="1.22">
-120.196 -8.473 5.163 -2.492 0.713
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.398" Depth="0.126"/>
<TopsideChapman PeakHeight="253.683" PeakDensity="716625.3" PeakScaleHeight="49.11" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
