<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-05 -095 09:30:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.04.05 (095) 09:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.19" 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">
FF202609504050930009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.446" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.018" 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="7.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="7.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="305.000" 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="1.750" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="255.825" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="210.906" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.016" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="63.935" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="11.003" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="35.827" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="57.860" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.820" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="96">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 237.500 235.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 245.000 245.000 245.000 250.000 247.500 245.000 245.000 247.500 250.000 250.000 250.000 251.667 253.333 255.000 255.000 255.000 255.000 255.000 255.000 255.000 260.000 261.250 262.500 263.750 265.000 265.000 265.000 265.000 265.000 270.000 270.000 270.000 275.000 275.000 275.000 275.000 280.000 280.000 280.000 285.000 285.000 285.000 290.000 295.000 295.000 300.000 300.000 305.000 305.000 310.000 315.204 322.393 332.971 350.073 382.426 466.853
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 66 66 69 69 54 69 66 66 66 66 66 66 66 69 0 0 69 69 69 66 63 63 0 63 63 69 0 72 72 0 0 69 69 66 66 63 60 60 69 0 69 0 0 69 66 0 69 69 69 0 0 63 66 66 69 72 72 72 66 0 51 0 60 63 0 69 69 63 66 72 60 66 69 72 66 72 75 69 72 72 72 66 72 69 75 75 72 72 72 69 69 69 69 48
</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 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 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 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 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 1.171875 1.171875 1.171875 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="133">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.839 90.0 95.0 100.0 105.0 110.0 115.0 119.647 120.0 125.0 129.295 130.0 135.0 138.942 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 255.825 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.214 1.171 1.516 1.694 1.75 1.714 1.612 1.612 1.612 1.612 1.622 1.694 1.75 1.8 1.99 2.155 2.314 2.475 2.641 2.817 3.007 3.215 3.446 3.709 4.011 4.365 4.779 5.249 5.742 6.203 6.593 6.904 7.144 7.322 7.445 7.52 7.549 7.55 7.54 7.504 7.444 7.363 7.263 7.146 7.015 6.872 6.719 6.557 6.39 6.217 6.041 5.863 5.683 5.503 5.324 5.146 4.97 4.796 4.626 4.459 4.295 4.135 3.979 3.828 3.681 3.538 3.399 3.265 3.136 3.01 2.889 2.773 2.66 2.552 2.447 2.347 2.25 2.157 2.068 1.982 1.899 1.82 1.744 1.671 1.601 1.534 1.469 1.407 1.348 1.291 1.237 1.184 1.134 1.086 1.04 0.996 0.954 0.913 0.875 0.837 0.802 0.768 0.735 0.704 0.674 0.645 0.618 0.591 0.566 0.542 0.519 0.497 0.476 0.455 0.436 0.417 0.4 0.383 0.366 0.351 0.336 0.321 0.308 0.295 0.282 0.27 0.258 0.247 0.237 0.227 0.217 0.208

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.75" PeakHeight="110.0" Num="3" Error="0.0">
-28.644 10.555 -2.072
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.75" EndFrequency="7.55" PeakHeight="255.825" Num="5" zHalfNm="210.906" Error="3.427">
-105.099 -7.33 -9.73 4.891 0.385
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="28.942" Depth="0.138"/>
<TopsideChapman PeakHeight="255.825" PeakDensity="707227.06" PeakScaleHeight="35.827" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
