<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 21:30:00.000"
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="18.0">
<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: 70% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.03.10 (069) 21:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606903102130009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.844" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.464" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.600" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.700" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="355.676" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="308.357" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.170" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="69.447" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.050" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="35.063" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="78.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 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 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 300.000 300.000 302.500 305.000 305.000 305.000 305.000 305.000 305.000 305.000 305.000 305.000 307.500 310.000 310.000 311.250 312.500 313.750 315.000 315.000 315.000 315.000 316.250 317.500 318.750 320.000 321.250 322.500 323.750 325.000 326.429 327.857 329.286 330.714 332.143 333.571 335.000 330.000 331.500 333.000 334.500 336.000 337.500 339.000 340.500 342.000 343.500 345.000 345.000 345.000 345.000 345.000 345.000 347.500 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 357.500 360.000 362.500 365.000 365.000 365.000 367.500 370.000 365.000 370.000 370.833 371.667 372.500 373.333 374.167 375.000 380.000 380.000 380.000 380.000 385.000 387.500 390.000 392.500 395.000 395.000 395.000 400.000 400.000 400.000 405.000 405.000 406.667 408.333 410.000 412.500 415.000 415.000 420.000 420.000 425.000 425.000 430.000 430.000 430.000 435.000 435.000 439.293 444.516 451.004 459.283 470.213
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 54 0 57 60 0 0 75 72 0 69 60 0 0 0 0 0 0 66 75 0 0 0 0 0 0 0 0 0 63 0 0 0 51 0 0 60 0 0 0 0 0 0 0 0 0 54 57 60 0 69 0 72 0 72 0 75 63 0 63 66 69 0 0 0 57 66 69 0 66 0 69 0 0 0 0 0 75 72 75 75 72 72 0 0 45 51 60 66 60 0 69 63 66 0 0 69 0 72 75 69 75 66 75 66 75 78 69 72 66 54 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -0.390625 1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="152">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.773 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 134.943 135.0 140.0 145.0 150.0 155.0 159.887 160.0 165.0 170.0 175.0 180.0 184.83 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 355.676 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.464 0.607 0.678 0.7 0.69 0.658 0.601 0.511 0.363 0.363 0.363 0.363 0.363 0.363 0.363 0.365 0.432 0.5 0.567 0.635 0.7 0.706 0.842 0.963 1.082 1.205 1.333 1.47 1.615 1.77 1.935 2.111 2.298 2.496 2.706 2.926 3.156 3.396 3.646 3.905 4.172 4.448 4.731 5.023 5.321 5.626 5.936 6.252 6.57 6.888 7.202 7.504 7.781 8.015 8.18 8.249 8.25 8.238 8.196 8.127 8.034 7.92 7.787 7.638 7.476 7.303 7.121 6.932 6.738 6.541 6.341 6.14 5.94 5.74 5.542 5.347 5.154 4.966 4.781 4.6 4.424 4.253 4.087 3.925 3.769 3.617 3.471 3.33 3.193 3.062 2.935 2.813 2.695 2.582 2.474 2.369 2.269 2.173 2.081 1.992 1.907 1.825 1.747 1.672 1.6 1.532 1.466 1.402 1.342 1.284 1.228 1.175 1.124 1.076 1.029 0.985 0.942 0.901 0.862 0.824 0.789 0.754 0.722 0.69 0.66 0.631 0.604 0.578 0.553 0.529 0.506 0.484 0.463 0.442 0.423 0.405 0.387 0.37 0.354 0.339 0.324 0.31 0.296 0.283 0.271 0.259 0.248 0.237 0.227 0.217 0.207

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.7" PeakHeight="110.0" Num="3" Error="0.0">
-24.656 6.189 -0.76
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.7" EndFrequency="8.25" PeakHeight="355.676" Num="5" zHalfNm="308.357" Error="2.496">
-148.036 -34.696 13.341 -3.034 1.579
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="74.83" Depth="0.337"/>
<TopsideChapman PeakHeight="355.676" PeakDensity="844447.9" PeakScaleHeight="35.063" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
