<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-15 -074 22:10:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, Unidentified traces above foF2</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" >
2026.03.15 (074) 22:10:00</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">
FF202607403152210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.597" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.987" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="395.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="395.000" 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="520.000" 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="3.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="444.618" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="399.264" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.684" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="71.501" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.023" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="33.350" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="90.630" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.050" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="103">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
395.000 395.000 400.000 400.000 407.500 415.000 421.250 427.500 433.750 440.000 440.000 440.000 440.000 442.500 445.000 445.000 447.500 450.000 452.500 455.000 456.250 457.500 458.750 460.000 460.000 460.000 460.000 460.000 460.000 460.000 460.000 460.000 460.000 460.000 455.000 460.000 457.500 455.000 456.667 458.333 460.000 462.500 465.000 465.000 467.000 469.000 471.000 473.000 475.000 480.000 480.000 480.000 480.000 480.000 480.000 480.000 480.000 480.000 480.000 480.000 480.000 477.500 475.000 480.000 480.000 480.000 480.000 480.000 480.000 480.000 482.500 485.000 487.500 490.000 490.000 485.000 485.000 490.000 490.000 490.000 490.000 490.000 500.000 495.000 497.500 500.000 502.500 505.000 507.500 510.000 510.000 510.000 510.000 510.000 510.000 515.000 515.000 515.649 516.546 517.866 520.000 524.040 534.593
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 60 60 63 0 0 0 63 0 51 0 0 63 54 54 57 0 57 48 54 0 0 48 51 57 0 66 60 57 60 60 66 66 63 69 57 51 75 60 0 75 54 69 75 0 0 0 0 60 60 57 57 60 60 0 60 63 66 0 63 66 60 63 66 66 66 69 63 63 57 0 0 0 54 66 63 69 72 66 0 69 63 57 72 48 63 60 60 63 63 63 63 69 69 72 66 69 72 0 0 69 60 48
</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 -1.171875 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -1.171875 -1.953125 -1.171875 -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 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 1.953125 -1.953125 -1.171875 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 -1.171875 -2.734375 -2.734375 -1.171875 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -1.171875 -2.734375 -2.734375 0.390625 -2.734375 -2.734375 -2.734375 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="167">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.046 145.0 150.0 155.0 160.0 165.0 170.0 172.091 175.0 180.0 185.0 190.0 195.0 200.0 203.137 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 444.618 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.325 0.3 0.265 0.213 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.239 0.264 0.289 0.314 0.338 0.354 0.374 0.437 0.512 0.6 0.697 0.803 0.914 1.03 1.148 1.269 1.392 1.517 1.644 1.773 1.903 2.036 2.17 2.307 2.447 2.588 2.733 2.88 3.031 3.184 3.341 3.502 3.666 3.835 4.007 4.185 4.367 4.554 4.747 4.945 5.151 5.363 5.583 5.811 6.048 6.295 6.553 6.824 7.109 7.409 7.727 8.06 8.403 8.715 8.85 8.85 8.828 8.772 8.684 8.569 8.43 8.271 8.095 7.905 7.703 7.492 7.274 7.052 6.827 6.601 6.375 6.149 5.926 5.706 5.49 5.278 5.071 4.869 4.673 4.482 4.297 4.118 3.944 3.777 3.616 3.461 3.311 3.167 3.029 2.896 2.769 2.646 2.529 2.417 2.309 2.206 2.107 2.012 1.922 1.836 1.753 1.674 1.598 1.526 1.457 1.391 1.327 1.267 1.21 1.155 1.102 1.052 1.004 0.958 0.915 0.873 0.833 0.795 0.759 0.724 0.691 0.659 0.629 0.601 0.573 0.547 0.522 0.498 0.475 0.454 0.433 0.413 0.394 0.376 0.359 0.342 0.327 0.312 0.298 0.284 0.271 0.259 0.247 0.235 0.225 0.214 0.205

</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="8.85" PeakHeight="444.618" Num="5" zHalfNm="399.264" Error="1.903">
-200.884 -75.011 47.473 -14.332 1.273
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="93.137" Depth="0.154"/>
<TopsideChapman PeakHeight="444.618" PeakDensity="971743.2" PeakScaleHeight="33.35" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
