<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-04 -063 09:40:00.000"
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" >
2026.03.04 (063) 09:40:00</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">
FF202606303040940009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="7.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.072" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.196" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.850" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.900" 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="34" Val="115.000" Name="h`Es" 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="6.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="351.332" 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="1.806" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="300.616" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.577" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.525" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.200" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="104.166" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="17.455" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="58.008" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="91.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="94">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
245.000 245.000 245.000 245.000 245.000 245.000 250.000 250.000 252.500 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 260.000 265.000 262.500 260.000 260.000 260.000 260.833 261.667 262.500 263.333 264.167 265.000 265.000 265.000 270.000 270.000 270.000 270.000 270.000 275.000 275.000 275.000 277.143 279.286 281.429 283.571 285.714 287.857 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 297.500 300.000 300.000 300.000 300.000 305.000 307.500 310.000 305.000 310.000 315.000 315.000 315.000 320.000 320.000 325.000 325.000 330.000 330.000 335.000 335.000 340.000 341.770 343.744 345.962 348.471 351.332 354.625 358.456 362.968 368.361 374.920 383.071 393.471 407.201 426.167 454.067 499.158 584.408
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 57 0 0 0 60 54 63 0 57 0 0 63 0 54 60 60 0 60 57 51 0 63 60 63 0 0 0 0 0 66 66 60 0 69 69 66 69 72 0 69 0 0 0 0 48 0 0 0 0 0 45 57 0 66 0 66 63 69 60 69 57 66 69 60 66 72 69 69 72 66 69 63 66 60 69 66 72 69 69 75 75 72 69 66 0 69 69 66 69 66 0 54 51
</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 -2.734375 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 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 1.953125 1.953125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
130.000 127.500 125.000 122.500 120.000 117.500 115.000 120.000 120.000 120.000 125.000 125.000 125.000 130.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 0 0 0 0 54 57 0 51 0 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
</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" >
89.82 90.0 95.0 100.0 105.0 110.0 115.0 119.313 120.0 125.0 128.627 130.0 135.0 137.94 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 300.616 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.216 1.209 1.564 1.748 1.806 1.767 1.669 1.669 1.669 1.669 1.689 1.763 1.806 1.872 2.027 2.18 2.332 2.484 2.637 2.794 2.955 3.123 3.297 3.481 3.675 3.883 4.105 4.345 4.605 4.884 5.181 5.489 5.797 6.091 6.359 6.596 6.801 6.974 7.119 7.239 7.337 7.414 7.473 7.515 7.54 7.55 7.55 7.546 7.531 7.507 7.474 7.431 7.381 7.324 7.259 7.189 7.112 7.031 6.944 6.854 6.76 6.662 6.562 6.459 6.354 6.248 6.14 6.031 5.92 5.81 5.699 5.588 5.477 5.366 5.256 5.146 5.037 4.929 4.822 4.716 4.611 4.507 4.405 4.304 4.205 4.107 4.011 3.917 3.824 3.732 3.642 3.554 3.468 3.383 3.3 3.219 3.139 3.061 2.985 2.91 2.837 2.766 2.696 2.628 2.561 2.496 2.432 2.37 2.309 2.25 2.192 2.136 2.081 2.027 1.974 1.923 1.873 1.825 1.777 1.731 1.686 1.642 1.599 1.557 1.516 1.477 1.438 1.4 1.363 1.328 1.293 1.259 1.226 1.193 1.162 1.131 1.102 1.072 1.044 1.017 0.99 0.964 0.938 0.913 0.889 0.866 0.843 0.82 0.799 0.778 0.757 0.737 0.717 0.698 0.68 0.662 0.644 0.627 0.611 0.594 0.579 0.563 0.548 0.534 0.52 0.506 0.493 0.479 0.467 0.454 0.442 0.431 0.419 0.408 0.397 0.387 0.376 0.366 0.357 0.347 0.338 0.329 0.32 0.312 0.303 0.295 0.288

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.806" PeakHeight="110.0" Num="3" Error="0.0">
-28.745 10.688 -2.123
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.806" EndFrequency="7.55" PeakHeight="300.616" Num="5" zHalfNm="227.577" Error="3.497">
-160.393 4.354 -12.894 7.514 -1.257
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="27.94" Depth="0.137"/>
<TopsideChapman PeakHeight="300.616" PeakDensity="707227.06" PeakScaleHeight="58.008" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
