<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 22:00:00.000"
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: 85% PACIFIC flags: 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" >
2026.03.05 (064) 22:00:00</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">
FF202606403052200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.836" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.259" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="390.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="390.000" 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="8.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.369" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="395.079" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="355.389" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.811" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="61.941" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="11.146" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="29.023" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="77.020" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.110" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
390.000 390.000 390.000 390.000 390.000 390.000 390.000 392.000 394.000 396.000 398.000 400.000 395.000 395.000 397.000 399.000 401.000 403.000 405.000 405.000 405.000 406.250 407.500 408.750 410.000 410.000 405.000 405.000 406.000 407.000 408.000 409.000 410.000 415.000 415.000 415.000 415.000 415.000 415.000 420.000 420.000 420.000 420.000 420.000 420.000 420.000 421.250 422.500 423.750 425.000 430.000 431.250 432.500 433.750 435.000 435.000 430.000 431.250 432.500 433.750 435.000 436.250 437.500 438.750 440.000 440.625 441.250 441.875 442.500 443.125 443.750 444.375 445.000 445.000 450.000 450.000 450.000 450.000 450.000 450.000 450.000 452.000 454.000 456.000 458.000 460.000 455.000 488.106
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 60 48 51 54 0 54 0 0 0 0 57 54 0 0 0 48 0 60 60 0 0 0 0 54 60 57 51 0 0 54 0 57 60 63 0 0 0 63 66 48 0 0 0 63 60 0 0 0 60 57 0 0 0 0 54 66 0 0 0 63 0 0 0 60 0 0 51 0 0 0 0 57 63 57 0 0 57 60 66 69 0 0 0 0 48 66 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 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 2.734375 -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 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 1.953125 -1.953125 -0.390625 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 2.734375 -1.953125 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="144">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.19 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.778 140.0 145.0 150.0 155.0 160.0 165.0 169.557 170.0 175.0 180.0 185.0 190.0 195.0 199.335 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 395.079 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.244 0.32 0.357 0.369 0.365 0.354 0.334 0.305 0.261 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.203 0.231 0.259 0.288 0.316 0.344 0.369 0.377 0.448 0.533 0.634 0.75 0.878 1.016 1.159 1.308 1.46 1.616 1.774 1.934 2.097 2.263 2.432 2.604 2.779 2.957 3.14 3.326 3.518 3.713 3.914 4.121 4.334 4.553 4.78 5.015 5.259 5.513 5.777 6.054 6.345 6.653 6.977 7.321 7.679 8.021 8.2 8.2 8.178 8.113 8.012 7.878 7.717 7.534 7.333 7.118 6.892 6.659 6.421 6.18 5.939 5.699 5.462 5.229 5.0 4.777 4.56 4.35 4.146 3.95 3.761 3.579 3.405 3.237 3.077 2.924 2.778 2.638 2.505 2.378 2.257 2.142 2.032 1.928 1.829 1.735 1.645 1.56 1.479 1.403 1.33 1.261 1.195 1.133 1.074 1.018 0.965 0.915 0.867 0.822 0.779 0.738 0.7 0.663 0.628 0.595 0.564 0.535 0.507 0.48 0.455 0.431 0.409 0.387 0.367 0.348 0.33 0.312 0.296 0.28 0.266 0.252 0.239 0.226 0.214 0.203

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.369" PeakHeight="110.0" Num="3" Error="0.0">
-19.304 2.66 -0.166
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.369" EndFrequency="8.2" PeakHeight="395.079" Num="5" zHalfNm="355.389" Error="1.681">
-164.103 -57.756 37.047 -12.463 1.531
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="89.335" Depth="0.169"/>
<TopsideChapman PeakHeight="395.079" PeakDensity="834243.2" PeakScaleHeight="29.023" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
