<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 08:20:00.000"
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="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 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Severe F-spread, F2x 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" >
2026.10.14 (287) 08:20:00</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">
FF202628710140820009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.190" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.343" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="5.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="346.159" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.719" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="296.034" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.407" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.485" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="65.150" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.012" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="34.382" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="65.500" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.080" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 327.195 329.749 332.757 336.353 340.726 346.159 353.093 362.246 374.890 393.490 423.551 480.384
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 63 66 0 66 0 69 69 69 75 69 63 0 48
</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 2.734375 1.171875 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="131">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.724 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 134.611 135.0 140.0 145.0 150.0 155.0 159.223 160.0 165.0 170.0 175.0 180.0 183.834 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 296.034 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.477 0.623 0.696 0.719 0.708 0.675 0.616 0.523 0.381 0.381 0.381 0.381 0.381 0.381 0.381 0.392 0.46 0.529 0.598 0.666 0.719 0.751 0.897 1.062 1.247 1.452 1.678 1.925 2.191 2.475 2.775 3.086 3.404 3.724 4.041 4.346 4.636 4.903 5.141 5.345 5.512 5.636 5.716 5.749 5.75 5.743 5.714 5.665 5.599 5.518 5.423 5.317 5.201 5.077 4.947 4.813 4.674 4.534 4.391 4.249 4.106 3.964 3.824 3.686 3.55 3.417 3.286 3.159 3.036 2.915 2.798 2.685 2.576 2.47 2.368 2.269 2.174 2.082 1.994 1.91 1.828 1.75 1.675 1.602 1.533 1.467 1.403 1.342 1.284 1.228 1.174 1.123 1.073 1.026 0.981 0.938 0.897 0.857 0.819 0.783 0.749 0.716 0.684 0.654 0.625 0.597 0.571 0.545 0.521 0.498 0.476 0.455 0.435 0.416 0.397 0.38 0.363 0.347 0.331 0.317 0.302 0.289 0.276 0.264 0.252 0.241 0.23 0.22 0.21 0.201

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.719" PeakHeight="110.0" Num="3" Error="0.0">
-24.815 6.333 -0.794
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.719" EndFrequency="5.75" PeakHeight="296.034" Num="5" zHalfNm="250.407" Error="0.964">
-111.992 -0.044 -0.344 0.193 -0.013
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="73.834" Depth="0.338"/>
<TopsideChapman PeakHeight="296.034" PeakDensity="410204.72" PeakScaleHeight="34.382" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
