<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-27 -086 22:10:00.000"
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 55 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 20% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2, Trace overlaps while constructing baseline</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" >
2026.03.27 (086) 22:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608603272210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.766" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.619" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="370.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="370.000" 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="8.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="471.249" 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="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="410.362" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="375.033" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.685" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="55.683" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.047" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="26.383" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="72.930" 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="120">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
370.000 370.000 370.000 371.667 373.333 375.000 375.000 376.250 377.500 378.750 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 382.500 385.000 385.000 380.000 386.667 393.333 400.000 400.000 390.000 390.000 405.000 405.000 410.000 410.000 410.000 410.000 410.000 410.000 410.000 415.000 420.000 418.333 416.667 415.000 395.000 395.000 420.000 420.000 415.000 415.000 425.000 425.000 425.000 420.000 416.250 412.500 408.750 405.000 430.000 430.000 430.000 430.000 435.000 432.500 430.000 430.000 435.000 435.000 435.000 435.000 435.000 435.000 440.000 440.000 440.000 440.000 440.000 440.000 440.000 440.000 440.000 440.333 440.667 441.000 441.333 441.667 442.000 442.333 442.667 443.000 443.333 443.667 444.000 444.333 455.000 457.500 460.000 460.000 465.000 465.000 465.000 465.000 465.000 465.066 465.141 465.224 465.319 465.427 465.551 465.696 465.868 466.073 466.324 466.636 467.038 467.571 468.314 469.421 471.249 474.837 485.090
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 0 0 0 60 66 0 0 0 60 0 0 0 0 0 66 69 0 0 0 57 54 0 0 66 66 63 0 72 75 66 66 0 0 60 66 66 63 48 0 0 66 54 60 60 63 69 60 54 60 63 66 0 0 0 60 63 66 69 72 60 60 75 78 72 69 72 60 69 72 69 72 54 72 0 75 72 75 69 0 78 0 66 0 0 0 69 0 72 0 0 0 72 51 69 72 69 69 72 78 75 75 72 72 72 57 69 60 63 0 0 0 0 0 0 63 0 54 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -0.390625 -0.390625 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 2.734375 0.390625 -1.953125 -0.390625 -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 -0.390625 -0.390625 2.734375 -2.734375 2.734375 -2.734375 -2.734375 2.734375 2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="141">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.391 145.0 150.0 155.0 160.0 165.0 170.0 172.781 175.0 180.0 185.0 190.0 195.0 200.0 204.172 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 410.362 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.342 0.325 0.301 0.267 0.218 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.235 0.26 0.284 0.309 0.334 0.354 0.368 0.457 0.556 0.66 0.768 0.877 0.99 1.105 1.223 1.344 1.468 1.595 1.727 1.862 2.002 2.146 2.295 2.449 2.608 2.773 2.944 3.122 3.306 3.498 3.697 3.905 4.122 4.348 4.586 4.834 5.095 5.37 5.659 5.966 6.291 6.637 7.007 7.402 7.823 8.262 8.675 8.899 8.9 8.874 8.793 8.664 8.495 8.292 8.063 7.812 7.546 7.269 6.985 6.698 6.41 6.124 5.842 5.566 5.296 5.034 4.78 4.536 4.3 4.074 3.858 3.651 3.454 3.266 3.087 2.917 2.756 2.603 2.458 2.32 2.19 2.066 1.95 1.84 1.735 1.637 1.544 1.456 1.373 1.295 1.221 1.151 1.085 1.023 0.965 0.909 0.857 0.808 0.762 0.718 0.677 0.638 0.601 0.567 0.534 0.504 0.475 0.447 0.422 0.397 0.375 0.353 0.333 0.314 0.296 0.279 0.263 0.248 0.233 0.22 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="8.9" PeakHeight="410.362" Num="5" zHalfNm="375.033" Error="1.49">
-167.083 -68.49 35.978 -6.628 0.033
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="94.172" Depth="0.154"/>
<TopsideChapman PeakHeight="410.362" PeakDensity="982754.3" PeakScaleHeight="26.383" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
