<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-12 -071 09:10:00.000"
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 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" >
2026.03.12 (071) 09:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607103120910009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="6.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.288" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.056" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="5.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="305.434" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.240" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="282.215" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="221.579" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.530" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="87.603" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.520" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.013" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="68.320" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.330" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="76">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 250.000 247.500 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.417 245.833 246.250 246.667 247.083 247.500 247.917 248.333 248.750 249.167 249.583 250.000 250.000 250.000 250.000 250.000 250.000 251.667 253.333 255.000 255.000 255.000 255.000 260.000 260.000 260.000 265.000 265.000 265.000 265.000 266.250 267.500 268.750 270.000 271.250 272.500 273.750 275.000 280.000 280.000 282.500 285.000 280.000 282.500 285.000 290.000 295.000 295.000 295.000 300.000 302.512 305.434 308.877 312.990 317.994 324.212 332.145 342.619 357.085 378.366 412.757 477.770 647.120
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 63 0 66 0 60 0 0 63 0 57 0 54 57 0 0 63 0 0 0 0 0 0 0 66 0 0 0 66 69 0 0 0 69 69 69 72 0 81 72 72 0 57 0 0 0 0 54 0 0 63 57 57 0 57 63 60 63 69 57 63 60 69 72 72 69 63 60 51 63 60 48 0 57 45 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 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 0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 2.734375 1.171875 1.953125 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="166">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.074 95.0 100.0 105.0 110.0 115.0 120.0 123.465 125.0 130.0 135.0 136.931 140.0 145.0 150.0 150.396 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 282.215 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.827 1.074 1.2 1.24 1.218 1.152 1.076 1.076 1.076 1.076 1.076 1.113 1.174 1.235 1.24 1.415 1.574 1.721 1.866 2.014 2.166 2.328 2.501 2.692 2.906 3.152 3.44 3.783 4.182 4.593 4.953 5.238 5.458 5.629 5.763 5.868 5.95 6.012 6.056 6.085 6.099 6.1 6.098 6.085 6.062 6.028 5.984 5.932 5.871 5.804 5.73 5.651 5.566 5.477 5.384 5.288 5.189 5.088 4.985 4.881 4.776 4.67 4.564 4.457 4.351 4.246 4.141 4.037 3.934 3.832 3.732 3.633 3.536 3.44 3.346 3.253 3.163 3.074 2.987 2.902 2.819 2.738 2.658 2.581 2.505 2.432 2.36 2.29 2.222 2.156 2.091 2.028 1.967 1.908 1.85 1.794 1.74 1.687 1.635 1.585 1.537 1.489 1.444 1.399 1.356 1.314 1.274 1.235 1.196 1.159 1.123 1.089 1.055 1.022 0.99 0.96 0.93 0.901 0.873 0.846 0.819 0.794 0.769 0.745 0.722 0.699 0.677 0.656 0.636 0.616 0.597 0.578 0.56 0.542 0.525 0.509 0.493 0.478 0.463 0.448 0.434 0.42 0.407 0.395 0.382 0.37 0.359 0.347 0.336 0.326 0.316 0.306 0.296 0.287 0.278 0.269 0.261 0.253 0.245 0.237 0.23 0.222 0.215 0.209 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.24" PeakHeight="110.0" Num="3" Error="0.0">
-27.415 9.023 -1.534
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.24" EndFrequency="6.1" PeakHeight="282.215" Num="5" zHalfNm="221.579" Error="5.075">
-138.233 16.061 -18.253 9.96 -1.354
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.396" Depth="0.164"/>
<TopsideChapman PeakHeight="282.215" PeakDensity="461662.53" PeakScaleHeight="49.013" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
