<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 21:40:00.000"
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="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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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) 21:40:00</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">
FF202628710142140009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.795" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.305" 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="7.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="464.040" 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="0.354" 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="377.749" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="328.601" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.743" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="73.458" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="8.376" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="35.732" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="80.270" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.470" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
425.000 430.000 430.000 430.000 430.000 430.000 430.000 430.000 435.000 440.000 435.000 435.000 440.000 442.500 445.000 447.500 450.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 455.000 455.649 456.546 457.866 460.000 464.040 474.593
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 0 0 81 0 0 78 72 0 72 81 0 81 0 0 0 78 0 0 75 78 78 78 75 78 78 75 81 78 75 60
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="153">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.255 145.0 150.0 155.0 160.0 165.0 170.0 170.511 175.0 180.0 185.0 190.0 195.0 200.0 200.766 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.749 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.323 0.297 0.259 0.203 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.223 0.248 0.274 0.299 0.325 0.35 0.354 0.44 0.518 0.596 0.679 0.772 0.876 0.993 1.125 1.274 1.436 1.612 1.797 1.988 2.185 2.385 2.587 2.79 2.995 3.201 3.408 3.617 3.827 4.04 4.255 4.473 4.694 4.917 5.144 5.372 5.603 5.832 6.054 6.261 6.431 6.534 6.55 6.547 6.525 6.48 6.416 6.335 6.238 6.129 6.008 5.878 5.74 5.596 5.447 5.295 5.14 4.984 4.828 4.672 4.516 4.363 4.211 4.062 3.915 3.772 3.632 3.495 3.362 3.233 3.107 2.986 2.868 2.754 2.644 2.538 2.435 2.336 2.241 2.149 2.06 1.975 1.894 1.815 1.739 1.667 1.597 1.53 1.466 1.404 1.345 1.289 1.234 1.182 1.132 1.084 1.038 0.994 0.952 0.912 0.873 0.836 0.8 0.766 0.733 0.702 0.672 0.644 0.616 0.59 0.565 0.541 0.518 0.495 0.474 0.454 0.435 0.416 0.398 0.381 0.365 0.349 0.334 0.32 0.306 0.293 0.281 0.269 0.257 0.246 0.236 0.226 0.216 0.207

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="6.55" PeakHeight="377.749" Num="5" zHalfNm="328.601" Error="5.322">
-160.618 -31.257 20.738 -10.081 4.235
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="90.766" Depth="0.154"/>
<TopsideChapman PeakHeight="377.749" PeakDensity="532289.06" PeakScaleHeight="35.732" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
