<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 10:40:00.000"
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 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" >
2026.10.22 (295) 10:40:00</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">
FF202629510221040009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.383" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.866" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="284.545" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="284.545" 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="331.989" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.705" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="242.371" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="188.070" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.868" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="62.081" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="11.405" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="37.332" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="101.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="47">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
284.545 285.455 286.364 287.273 288.182 289.091 290.000 290.000 290.556 291.111 291.667 292.222 292.778 293.333 293.889 294.444 295.000 290.000 292.000 294.000 296.000 298.000 300.000 300.000 305.000 310.000 310.000 310.000 310.000 305.000 310.000 315.000 317.500 320.000 320.000 320.000 325.000 325.000 325.609 326.346 327.258 328.413 329.925 331.989 334.975 339.678 348.178
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 66 0 0 0 0 0 72 0 0 0 0 0 0 72 75 0 0 0 0 75 78 66 57 69 0 72 75 0 66 0 63 69 72 60 45 75 75 0 75 75 0 72 60 51
</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 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="134">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.599 90.0 95.0 100.0 105.0 110.0 114.579 115.0 119.157 120.0 123.736 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 242.371 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.817 2.342 2.617 2.705 2.582 2.582 2.582 2.605 2.705 2.766 3.019 3.264 3.489 3.696 3.888 4.071 4.247 4.419 4.588 4.755 4.923 5.092 5.264 5.439 5.618 5.804 5.997 6.199 6.413 6.64 6.88 7.124 7.319 7.35 7.346 7.321 7.274 7.206 7.12 7.019 6.903 6.776 6.639 6.493 6.341 6.183 6.021 5.856 5.689 5.521 5.353 5.186 5.019 4.855 4.692 4.532 4.376 4.222 4.072 3.925 3.782 3.643 3.507 3.376 3.249 3.125 3.006 2.89 2.778 2.67 2.566 2.466 2.369 2.275 2.185 2.098 2.015 1.935 1.857 1.783 1.711 1.642 1.576 1.513 1.452 1.393 1.337 1.282 1.23 1.18 1.133 1.086 1.042 1.0 0.959 0.92 0.883 0.847 0.812 0.779 0.747 0.717 0.687 0.659 0.632 0.606 0.582 0.558 0.535 0.513 0.492 0.472 0.453 0.434 0.416 0.399 0.383 0.367 0.352 0.338 0.324 0.311 0.298 0.286 0.274 0.263 0.252 0.242 0.232 0.222 0.213 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.705" PeakHeight="110.0" Num="3" Error="0.0">
-29.926 12.313 -2.788
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.705" EndFrequency="7.35" PeakHeight="242.371" Num="5" zHalfNm="188.07" Error="2.398">
-91.632 -40.787 15.225 -0.553 -0.888
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.736" Depth="0.123"/>
<TopsideChapman PeakHeight="242.371" PeakDensity="670254.3" PeakScaleHeight="37.332" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
