<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 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="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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: 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" >
2026.03.05 (064) 21:40:00</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">
FF202606403052140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.990" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.369" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="402.070" 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="0.572" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="346.279" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="311.251" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.056" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="52.685" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.806" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="26.445" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="63.660" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.050" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="106">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 315.000 316.250 317.500 318.750 320.000 321.250 322.500 323.750 325.000 325.000 325.000 325.000 325.000 325.000 325.833 326.667 327.500 328.333 329.167 330.000 330.833 331.667 332.500 333.333 334.167 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 346.000 347.000 348.000 349.000 350.000 350.000 351.250 352.500 353.750 355.000 355.000 356.667 358.333 360.000 355.000 355.000 357.500 360.000 360.000 361.250 362.500 363.750 365.000 365.000 365.000 365.000 365.000 365.000 365.000 367.500 370.000 372.500 375.000 375.000 375.000 375.000 375.000 376.000 377.000 378.000 379.000 380.000 380.000 380.000 380.833 381.667 382.500 383.333 384.167 385.000 385.935 386.969 388.118 389.404 390.851 392.493 394.370 396.539 399.072 402.070 405.673 410.086 415.616 422.749 432.298
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 63 0 0 0 0 51 0 0 60 63 0 0 66 69 0 0 0 0 0 0 0 0 0 0 0 0 0 57 0 0 0 0 0 51 54 0 0 0 66 0 0 0 0 0 0 48 0 0 0 63 69 0 0 60 63 0 0 51 57 0 0 0 0 0 0 0 0 57 63 48 0 0 60 66 66 69 72 0 0 0 0 66 66 66 0 0 0 0 0 63 69 69 0 0 0 0 51 57 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.953125 -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 -1.953125 -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 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 0.390625 -1.171875 -2.734375 1.171875 -0.390625 -1.171875 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="127">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
91.224 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 136.929 140.0 145.0 150.0 155.0 160.0 163.859 165.0 170.0 175.0 180.0 185.0 190.0 190.788 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 346.279 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.379 0.496 0.554 0.572 0.564 0.54 0.497 0.43 0.321 0.258 0.258 0.258 0.258 0.258 0.258 0.258 0.271 0.33 0.388 0.446 0.505 0.563 0.572 0.68 0.819 0.964 1.111 1.261 1.414 1.572 1.734 1.901 2.075 2.255 2.444 2.641 2.847 3.064 3.292 3.532 3.786 4.055 4.34 4.642 4.964 5.306 5.669 6.053 6.457 6.875 7.293 7.681 7.989 8.143 8.15 8.135 8.069 7.959 7.811 7.631 7.426 7.201 6.96 6.709 6.451 6.189 5.926 5.664 5.405 5.152 4.904 4.663 4.429 4.204 3.987 3.778 3.579 3.388 3.205 3.032 2.866 2.709 2.56 2.418 2.283 2.156 2.035 1.921 1.813 1.711 1.614 1.523 1.436 1.355 1.278 1.205 1.137 1.072 1.011 0.953 0.899 0.847 0.799 0.753 0.71 0.669 0.631 0.595 0.561 0.529 0.498 0.47 0.443 0.418 0.394 0.371 0.35 0.33 0.311 0.293 0.276 0.26 0.245 0.231 0.218 0.206

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.572" PeakHeight="110.0" Num="3" Error="0.0">
-23.335 5.087 -0.528
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.572" EndFrequency="8.15" PeakHeight="346.279" Num="5" zHalfNm="311.251" Error="1.413">
-129.37 -41.462 16.883 -0.84 -0.702
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="80.788" Depth="0.314"/>
<TopsideChapman PeakHeight="346.279" PeakDensity="824100.5" PeakScaleHeight="26.445" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
