<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 14:20:00.000"
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" >
2026.03.08 (067) 14:20:00</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">
FF202606703081420009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.646" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.442" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.384" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.357" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="333.623" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="230.271" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.856" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="131.036" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.749" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="73.123" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="176.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.200" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="80">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 337.500 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 361.667 363.333 365.000 365.000 365.000 365.000 370.000 370.000 375.000 376.667 378.333 380.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 395.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 420.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 450.000 460.000 460.000 465.000 470.000 470.000 465.000 475.000 480.000 483.693 487.786 492.350 497.470 503.253 509.839 517.406 526.192 536.516 548.822 563.741
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 45 0 51 54 54 51 51 54 57 54 57 57 54 54 51 57 48 0 0 48 57 60 63 60 63 54 0 0 57 63 51 57 60 51 51 48 57 54 54 48 57 48 57 48 57 51 57 57 60 54 60 54 60 57 60 57 60 60 57 57 51 54 54 45 54 0 51 51 48 45 45 0 45 45 48 45 0 0 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 -1.953125 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 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 -1.953125 0.390625 0.390625 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="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.484 90.0 95.0 100.0 105.0 110.0 111.576 113.152 114.728 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 333.623 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.277 2.928 3.274 3.384 3.261 3.261 3.384 3.395 3.6 3.807 4.013 4.217 4.418 4.615 4.808 4.998 5.184 5.367 5.547 5.725 5.901 6.074 6.247 6.417 6.587 6.756 6.924 7.091 7.258 7.425 7.592 7.759 7.927 8.095 8.263 8.432 8.601 8.772 8.943 9.115 9.287 9.46 9.632 9.804 9.974 10.14 10.299 10.447 10.576 10.676 10.736 10.75 10.75 10.742 10.725 10.7 10.666 10.624 10.574 10.518 10.454 10.385 10.309 10.228 10.142 10.051 9.956 9.857 9.755 9.648 9.539 9.428 9.313 9.197 9.079 8.959 8.838 8.715 8.592 8.467 8.343 8.217 8.092 7.966 7.841 7.716 7.591 7.466 7.342 7.219 7.097 6.975 6.854 6.735 6.616 6.498 6.382 6.267 6.153 6.04 5.929 5.819 5.71 5.603 5.498 5.394 5.291 5.19 5.09 4.992 4.895 4.8 4.706 4.614 4.523 4.434 4.347 4.26 4.176 4.092 4.011 3.93 3.851 3.774 3.698 3.623 3.55 3.478 3.407 3.338 3.27 3.203 3.137 3.073 3.01 2.948 2.888 2.828 2.77 2.713 2.657 2.602 2.548 2.495 2.444 2.393 2.343 2.295 2.247 2.2 2.154 2.109 2.065 2.022 1.98 1.939 1.898 1.859 1.82 1.782 1.744 1.708 1.672 1.637 1.603 1.569 1.536 1.504 1.472 1.441 1.411 1.381 1.352 1.324 1.296 1.269 1.242 1.216 1.191 1.165 1.141 1.117 1.093 1.07 1.048 1.026

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.384" PeakHeight="110.0" Num="3" Error="0.0">
-30.496 13.144 -3.164
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.384" EndFrequency="10.75" PeakHeight="333.623" Num="5" zHalfNm="230.271" Error="1.834">
-188.157 -50.199 23.95 -4.654 0.165
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.728" Depth="0.123"/>
<TopsideChapman PeakHeight="333.623" PeakDensity="1433777.9" PeakScaleHeight="73.123" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
