<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 23:30:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: Moderate F-spread, F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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) 23:30:00</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">
FF202606903102330009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.901" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.984" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="375.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="375.000" 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="9.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" 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="3.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="399.997" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="375.053" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.762" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.930" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.734" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.645" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="63.600" 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="123">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
430.000 426.667 423.333 420.000 418.333 416.667 415.000 407.500 400.000 392.500 385.000 375.000 375.849 376.698 377.547 378.396 379.245 380.094 380.943 381.792 382.642 383.491 384.340 385.189 386.038 386.887 387.736 388.585 389.434 390.283 391.132 391.981 392.830 393.679 394.528 395.377 396.226 397.075 397.925 398.774 399.623 400.472 401.321 402.170 403.019 403.868 404.717 405.566 406.415 407.264 408.113 408.962 409.811 410.660 411.509 412.358 413.208 414.057 414.906 415.755 416.604 417.453 418.302 419.151 420.000 425.000 426.250 427.500 428.750 430.000 431.500 433.000 434.500 436.000 437.500 439.000 440.500 442.000 443.500 445.000 445.000 445.000 445.000 445.000 445.000 445.000 445.000 445.000 445.000 445.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 455.000 455.000 452.000 449.000 446.000 443.000 440.000 440.000 440.000 435.000 435.000 435.000 435.000 435.000 437.500 440.000 440.000 440.000 440.000 440.000 440.000 440.000 435.000 435.000 447.500 460.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 0 60 0 0 66 0 60 0 48 51 0 0 0 0 0 0 0 0 48 0 0 0 0 0 0 0 0 0 48 0 0 57 0 54 57 0 0 60 0 57 0 0 0 57 0 0 54 57 0 0 0 0 0 0 0 57 0 0 0 48 0 0 54 57 0 0 0 57 0 57 54 0 0 0 0 0 0 54 0 0 0 0 54 0 0 0 48 54 48 51 57 0 54 51 54 54 51 54 54 51 0 54 0 51 54 0 54 51 54 48 51 51 48 51 48 54 54 51 54 51 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -2.734375 0.390625 0.390625 -0.390625 -1.171875 -0.390625 -0.390625 0.390625 0.390625 -1.953125 -1.171875 0.390625 0.390625 -1.171875 0.390625 1.171875 -2.734375 0.390625 -1.953125 1.171875 1.953125 -2.734375 -1.171875 1.953125 0.390625 -1.953125 -0.390625 0.390625 -0.390625 -0.390625 -1.171875 2.734375 -0.390625 -2.734375 -0.390625 -0.390625 1.171875 0.390625 1.171875 -0.390625 0.390625 -0.390625 0.390625 -0.390625 -1.171875 -2.734375 -1.171875 0.390625 -0.390625 -0.390625 -1.953125 -1.171875 0.390625 -1.171875 -1.953125 -0.390625 -0.390625 2.734375 -0.390625 -1.953125 -0.390625 0.390625 1.953125 0.390625 1.171875 0.390625 -1.171875 1.953125 0.390625 -0.390625 0.390625 -1.171875 1.171875 1.171875 1.171875 -1.171875 0.390625 -1.953125 -0.390625 -1.171875 -1.953125 -1.171875 2.734375 -0.390625 1.171875 -0.390625 -1.171875 -1.953125 0.390625 0.390625 -1.953125 -1.953125 -1.171875 1.171875 -1.171875 -1.953125 -1.171875 -1.171875 1.171875 0.390625 -2.734375 1.171875 1.171875 0.390625 -0.390625 1.953125 1.953125 1.953125 -0.390625 0.390625 -0.390625 -1.171875 1.171875 -2.734375 -0.390625 -1.953125 1.171875 -0.390625 -1.171875 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="118">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 144.928 145.0 150.0 155.0 160.0 165.0 170.0 175.0 179.856 180.0 185.0 190.0 195.0 200.0 205.0 210.0 214.784 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 399.997 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.344 0.331 0.312 0.286 0.25 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.201 0.223 0.245 0.267 0.289 0.311 0.333 0.354 0.358 0.456 0.576 0.704 0.834 0.963 1.094 1.225 1.359 1.495 1.633 1.775 1.921 2.072 2.226 2.386 2.552 2.723 2.901 3.086 3.279 3.48 3.689 3.909 4.14 4.382 4.638 4.909 5.196 5.502 5.831 6.186 6.572 6.997 7.474 8.022 8.674 9.3 9.3 9.238 9.068 8.813 8.491 8.123 7.723 7.306 6.881 6.457 6.04 5.635 5.246 4.874 4.522 4.189 3.876 3.584 3.31 3.056 2.819 2.599 2.396 2.208 2.033 1.873 1.724 1.587 1.461 1.344 1.237 1.138 1.047 0.963 0.886 0.815 0.75 0.69 0.634 0.583 0.536 0.493 0.454 0.417 0.384 0.353 0.325 0.299 0.275 0.252 0.232 0.214

</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="9.3" PeakHeight="399.997" Num="5" zHalfNm="375.053" Error="3.692">
-142.357 -74.497 39.083 -6.946 -0.496
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="104.784" Depth="0.154"/>
<TopsideChapman PeakHeight="399.997" PeakDensity="1073076.9" PeakScaleHeight="18.645" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
