<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 22:50:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Trace overlaps while constructing baseline</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) 22:50:00</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">
FF202607303142250009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.344" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.804" 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="9.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="8.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="530.000" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="478.315" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="390.166" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.181" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="128.587" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="30.106" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.353" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="126.770" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.080" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="131">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 345.000 345.000 350.000 355.000 360.000 365.000 375.000 375.000 375.000 375.000 385.000 385.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 395.000 400.000 397.500 395.000 400.000 400.000 402.500 405.000 415.000 417.500 420.000 420.000 420.000 415.000 415.000 415.000 415.000 415.000 417.500 420.000 420.000 410.000 400.000 420.000 420.000 420.000 422.500 425.000 425.000 425.000 430.000 430.000 430.000 430.000 430.000 430.000 431.667 433.333 435.000 436.667 438.333 440.000 441.667 443.333 445.000 446.667 448.333 450.000 451.667 453.333 455.000 455.000 455.000 455.000 435.000 455.000 455.000 440.000 450.000 450.000 450.000 450.000 455.000 457.000 459.000 461.000 463.000 465.000 465.000 465.000 465.000 465.000 470.000 505.000 510.000 510.000 510.000 510.000 512.500 515.000 515.000 515.000 515.000 520.000 540.000 536.667 533.333 530.000 537.500 545.000 550.000 555.000 560.000 570.000 575.000 585.000 585.000 590.000 595.000 605.000 615.741 627.972 642.025 658.340 677.513 700.364
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 57 57 51 0 54 0 66 0 66 63 75 0 66 0 66 69 69 0 63 0 60 63 63 63 54 0 72 72 69 0 69 66 0 60 57 54 57 66 63 66 69 0 66 69 0 54 66 66 63 0 69 63 69 66 54 66 66 66 72 0 63 63 0 69 72 69 66 63 72 0 0 0 51 57 63 66 66 63 60 63 60 66 0 63 63 66 0 0 0 0 60 0 69 66 63 63 63 54 57 69 63 0 66 66 66 69 69 60 0 72 54 0 60 0 60 60 60 54 45 66 63 60 60 57 57 0 60 0 45
</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 -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 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -0.390625 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -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 -1.171875 -0.390625 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 0.390625 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -0.390625 -1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.469 145.0 150.0 155.0 160.0 165.0 170.0 175.0 176.939 180.0 185.0 190.0 195.0 200.0 205.0 210.0 210.408 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 478.315 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.329 0.308 0.279 0.238 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.237 0.26 0.283 0.306 0.329 0.352 0.354 0.399 0.452 0.511 0.576 0.647 0.724 0.809 0.9 0.998 1.105 1.219 1.341 1.472 1.611 1.76 1.917 2.083 2.258 2.442 2.635 2.837 3.048 3.266 3.493 3.726 3.967 4.214 4.466 4.723 4.984 5.247 5.512 5.778 6.044 6.307 6.568 6.824 7.074 7.317 7.552 7.777 7.991 8.192 8.38 8.553 8.71 8.851 8.973 9.077 9.162 9.227 9.271 9.295 9.3 9.299 9.291 9.273 9.246 9.21 9.166 9.114 9.055 8.99 8.918 8.84 8.757 8.67 8.578 8.481 8.382 8.279 8.172 8.064 7.953 7.84 7.725 7.609 7.492 7.374 7.255 7.136 7.017 6.897 6.777 6.658 6.539 6.421 6.303 6.185 6.069 5.954 5.839 5.726 5.614 5.503 5.394 5.286 5.179 5.073 4.969 4.867 4.766 4.667 4.569 4.473 4.378 4.285 4.193 4.103 4.015 3.928 3.843 3.759 3.677 3.597 3.518 3.44 3.364 3.29 3.217 3.145 3.075 3.007 2.939 2.873 2.809 2.746 2.684 2.623 2.564 2.506 2.449 2.394 2.339 2.286 2.234 2.183 2.133 2.085 2.037 1.99 1.945 1.9 1.857 1.814 1.773 1.732 1.692 1.653 1.615 1.578 1.542 1.506 1.471 1.437 1.404 1.372 1.34 1.309

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="9.3" PeakHeight="478.315" Num="5" zHalfNm="390.166" Error="2.581">
-270.013 1.243 0.806 0.113 -0.056
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="100.408" Depth="0.154"/>
<TopsideChapman PeakHeight="478.315" PeakDensity="1073076.9" PeakScaleHeight="66.353" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
