<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-30 -089 02:10:00.000"
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 22 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 80% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</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" >
2026.03.30 (089) 02:10:00</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">
FF202608903300210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.786" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.521" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="460.000" 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="2.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="382.469" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="337.268" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.313" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="66.632" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="14.108" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="34.218" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="69.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.670" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="121">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 325.000 330.000 335.000 345.000 355.000 330.000 330.000 330.000 335.000 337.000 339.000 341.000 343.000 345.000 347.000 349.000 351.000 353.000 355.000 360.000 362.500 365.000 365.000 363.000 361.000 359.000 357.000 355.000 355.000 355.000 355.000 357.500 360.000 360.000 360.000 360.000 355.000 355.000 355.000 350.000 351.000 352.000 353.000 354.000 355.000 355.000 355.000 357.500 360.000 363.333 366.667 370.000 370.000 365.000 367.500 370.000 370.000 370.000 367.500 365.000 365.417 365.833 366.250 366.667 367.083 367.500 367.917 368.333 368.750 369.167 369.583 370.000 370.000 370.000 370.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 387.500 390.000 391.250 392.500 393.750 395.000 400.000 402.500 405.000 410.000 410.000 415.000 420.000 422.500 425.000 430.000 435.000 440.000 440.000 445.000 447.500 450.000 450.000 455.000 457.500 460.000 460.000 465.701 476.485 504.627
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 63 0 57 60 63 57 60 60 60 0 0 63 60 60 0 0 0 0 60 60 0 57 57 0 51 0 63 66 63 57 69 0 66 0 0 69 60 63 63 63 0 0 66 0 60 57 63 57 0 0 60 60 63 60 0 66 63 66 0 63 66 66 63 60 60 66 0 60 63 0 0 60 60 0 63 66 63 63 60 66 63 60 54 66 0 57 57 57 57 57 0 54 0 0 0 57 57 63 57 54 54 0 48 54 54 60 0 57 57 51 45 57 48 51 0 51 51 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 1.171875 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 0.390625 0.390625 1.953125 1.953125 -0.390625 1.171875 -0.390625 0.390625 1.953125 0.390625 1.953125 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -1.171875 -0.390625 0.390625 -0.390625 0.390625 1.171875 0.390625 -0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 2.734375 2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 1.171875 0.390625 0.390625 1.171875 1.171875 -0.390625 0.390625 1.171875 -0.390625 1.171875 -0.390625 2.734375 0.390625 -0.390625 -1.171875 0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 0.390625 0.390625 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 -0.390625 0.390625 1.171875 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -2.734375 0.390625 0.390625 1.953125 2.734375 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="157">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 147.555 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 185.111 190.0 195.0 200.0 205.0 210.0 215.0 220.0 222.666 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 382.469 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.334 0.318 0.296 0.266 0.226 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.22 0.241 0.261 0.282 0.302 0.323 0.343 0.354 0.388 0.478 0.589 0.719 0.862 1.017 1.184 1.362 1.552 1.755 1.972 2.205 2.454 2.721 3.008 3.314 3.642 3.991 4.362 4.753 5.163 5.588 6.024 6.462 6.893 7.308 7.693 8.036 8.327 8.555 8.711 8.79 8.8 8.795 8.76 8.694 8.599 8.48 8.339 8.18 8.005 7.818 7.62 7.415 7.203 6.987 6.769 6.55 6.33 6.112 5.896 5.683 5.473 5.267 5.066 4.87 4.678 4.492 4.312 4.137 3.968 3.804 3.646 3.494 3.347 3.205 3.069 2.938 2.812 2.691 2.575 2.464 2.357 2.254 2.156 2.062 1.971 1.885 1.802 1.723 1.647 1.574 1.505 1.438 1.375 1.314 1.256 1.2 1.147 1.096 1.047 1.001 0.956 0.914 0.873 0.834 0.797 0.762 0.728 0.695 0.664 0.635 0.607 0.58 0.554 0.529 0.505 0.483 0.461 0.441 0.421 0.402 0.384 0.367 0.351 0.335 0.32 0.306 0.292 0.279 0.267 0.255 0.244 0.233 0.222 0.212 0.203

</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="8.8" PeakHeight="382.469" Num="5" zHalfNm="337.268" Error="2.887">
-151.368 -14.133 6.249 0.547 -1.098
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="112.666" Depth="0.154"/>
<TopsideChapman PeakHeight="382.469" PeakDensity="960794.06" PeakScaleHeight="34.218" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
