<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 20:10:00.000"
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: 90% PACIFIC flags: 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" >
2026.03.14 (073) 20:10:00</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">
FF202607303142010009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.311" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.184" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.050" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="550.000" 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="2.147" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="405.568" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="273.778" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.684" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="176.856" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.812" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.945" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="203.880" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.510" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="140">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 235.000 235.000 235.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 245.000 245.000 245.000 245.000 245.000 255.000 255.000 255.000 255.000 255.000 257.500 260.000 260.000 262.000 264.000 266.000 268.000 270.000 272.500 275.000 275.000 277.500 280.000 280.000 282.500 285.000 287.500 290.000 290.000 292.500 295.000 295.000 300.000 300.000 305.000 305.000 305.000 305.000 310.000 310.000 312.500 315.000 320.000 320.000 325.000 325.000 325.000 327.500 330.000 335.000 340.000 340.000 343.333 346.667 350.000 350.000 355.000 355.000 360.000 360.000 365.000 370.000 370.000 375.000 380.000 380.000 385.000 385.000 390.000 395.000 395.000 395.000 405.000 405.000 410.000 415.000 415.000 420.000 425.000 430.000 435.000 440.000 440.000 445.000 450.000 460.000 460.000 465.000 470.000 475.000 480.000 480.000 490.000 490.000 495.000 500.000 505.000 510.000 515.000 515.000 525.000 530.000 530.000 535.000 535.000 545.000 545.000 550.000 550.000 560.000 560.000 570.000 575.000 575.000 585.000 595.000 600.000 605.000 605.000 610.000 620.000 630.454 642.767 657.483 675.382 697.622
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 0 57 54 0 54 60 0 60 60 60 60 57 63 63 63 60 57 0 0 0 0 66 0 60 60 0 0 0 0 66 0 57 63 0 57 63 0 60 0 54 60 0 54 63 51 60 48 57 0 63 63 66 0 66 63 66 63 66 66 0 66 66 63 69 0 0 63 66 63 66 63 66 63 60 66 60 54 66 63 69 69 66 72 69 69 69 69 66 66 66 66 66 69 66 72 72 72 69 69 69 69 72 72 72 69 69 66 69 69 69 66 69 54 51 63 63 66 54 66 66 66 66 63 60 60 60 60 45 48 51 60 57 60 45 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 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 -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 0.390625 0.390625 2.734375 1.953125 2.734375 -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" >
89.721 90.0 95.0 100.0 105.0 110.0 115.0 117.41 120.0 124.819 125.0 130.0 132.229 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 405.568 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.224 1.44 1.859 2.078 2.147 2.089 2.018 2.018 2.018 2.021 2.108 2.147 2.217 2.332 2.443 2.554 2.668 2.786 2.912 3.046 3.192 3.35 3.524 3.713 3.916 4.131 4.352 4.575 4.793 5.004 5.206 5.399 5.583 5.758 5.927 6.089 6.245 6.395 6.541 6.683 6.822 6.957 7.089 7.219 7.346 7.472 7.595 7.717 7.838 7.957 8.076 8.193 8.309 8.425 8.539 8.653 8.765 8.877 8.986 9.094 9.198 9.297 9.389 9.471 9.537 9.582 9.6 9.6 9.598 9.59 9.577 9.559 9.536 9.509 9.476 9.44 9.399 9.355 9.307 9.255 9.2 9.142 9.081 9.017 8.951 8.882 8.811 8.738 8.662 8.585 8.506 8.426 8.344 8.261 8.177 8.092 8.006 7.919 7.831 7.743 7.654 7.565 7.475 7.385 7.295 7.205 7.115 7.025 6.935 6.845 6.756 6.666 6.577 6.489 6.401 6.313 6.226 6.139 6.053 5.967 5.882 5.798 5.714 5.631 5.549 5.468 5.387 5.307 5.228 5.149 5.072 4.995 4.919 4.844 4.77 4.697 4.624 4.553 4.482 4.412 4.343 4.275 4.208 4.142 4.076 4.012 3.948 3.885 3.823 3.762 3.702 3.642 3.583 3.526 3.469 3.412 3.357 3.302 3.249 3.196 3.144 3.092 3.042 2.992 2.943 2.894 2.847 2.8 2.753 2.708 2.663 2.619 2.576 2.533 2.491 2.45 2.409 2.369 2.329 2.291 2.252 2.215 2.178 2.141 2.106 2.07 2.036

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.147" PeakHeight="110.0" Num="3" Error="0.0">
-29.281 11.406 -2.404
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.147" EndFrequency="9.6" PeakHeight="405.568" Num="5" zHalfNm="273.778" Error="5.571">
-253.374 -36.723 31.709 -22.348 7.397
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="22.229" Depth="0.129"/>
<TopsideChapman PeakHeight="405.568" PeakDensity="1143424.4" PeakScaleHeight="90.945" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
