<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-23 -082 03:10:00.000"
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: 85% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.03.23 (082) 03:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608203230310009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.169" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.636" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="210.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="210.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="330.000" 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="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="296.121" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="238.709" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.667" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="82.487" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="23.282" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="42.775" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="74.020" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="167">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.05 2.1 2.15 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 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.000 215.000 215.000 213.333 211.667 210.000 210.000 210.000 210.000 210.000 211.429 212.857 214.286 215.714 217.143 218.571 220.000 210.000 210.938 211.875 212.813 213.750 214.688 215.625 216.563 217.500 218.438 219.375 220.313 221.250 222.188 223.125 224.063 225.000 220.000 225.000 225.000 225.000 225.000 225.000 225.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 235.000 236.667 238.333 240.000 240.000 240.000 240.000 240.000 240.000 237.500 235.000 240.000 240.000 240.000 242.500 245.000 245.000 245.000 246.000 247.000 248.000 249.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 251.250 252.500 253.750 255.000 256.250 257.500 258.750 260.000 260.000 260.000 260.000 260.000 260.000 260.000 262.500 265.000 267.500 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 275.000 275.000 277.500 280.000 280.000 280.000 280.000 280.000 280.000 285.000 285.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 300.000 305.000 305.000 305.000 310.000 310.000 310.000 315.000 320.000 320.000 320.000 325.000 330.000 330.000 330.000 335.000 340.000 345.000 345.000 348.446 352.228 356.399 361.020 366.170 371.944 378.464 385.884 394.404 404.288 415.893 429.710 446.438
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 66 60 63 0 0 69 72 0 69 75 0 0 0 0 57 0 60 72 0 0 0 0 0 0 0 0 0 0 0 0 66 0 0 66 75 63 0 0 0 63 69 51 0 0 0 0 0 72 75 72 69 78 78 66 0 0 75 75 0 54 60 63 69 0 72 72 0 72 78 60 0 0 72 0 0 0 0 63 0 66 75 0 72 75 0 75 0 69 0 75 0 63 0 72 78 78 57 75 75 81 75 75 0 60 66 0 69 72 75 75 63 78 72 72 0 63 69 72 75 75 75 75 75 60 69 72 72 72 75 72 75 72 69 75 72 72 72 72 72 69 69 72 66 72 69 72 63 66 60 69 66 60 63 66 0 60 63 63 63 60 51 57 0 0 45 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="166">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 133.333 135.0 140.0 145.0 150.0 155.0 156.667 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 296.121 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.349 0.332 0.301 0.253 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.225 0.258 0.29 0.322 0.354 0.469 0.628 0.892 1.477 2.601 3.601 4.418 5.13 5.772 6.361 6.905 7.41 7.877 8.306 8.698 9.052 9.365 9.635 9.862 10.043 10.177 10.263 10.299 10.3 10.292 10.259 10.201 10.122 10.024 9.907 9.775 9.629 9.471 9.302 9.125 8.939 8.748 8.552 8.352 8.15 7.945 7.74 7.534 7.329 7.125 6.923 6.723 6.525 6.33 6.138 5.95 5.765 5.584 5.407 5.234 5.065 4.9 4.74 4.583 4.431 4.283 4.14 4.0 3.865 3.733 3.606 3.482 3.362 3.246 3.134 3.026 2.92 2.819 2.72 2.625 2.533 2.444 2.358 2.275 2.195 2.118 2.043 1.971 1.901 1.833 1.768 1.706 1.645 1.587 1.53 1.476 1.423 1.372 1.324 1.276 1.231 1.187 1.144 1.104 1.064 1.026 0.989 0.954 0.92 0.887 0.855 0.825 0.795 0.767 0.739 0.713 0.687 0.663 0.639 0.616 0.594 0.573 0.552 0.532 0.513 0.495 0.477 0.46 0.444 0.428 0.412 0.398 0.383 0.37 0.356 0.344 0.331 0.319 0.308 0.297 0.286 0.276 0.266 0.257 0.247 0.238 0.23 0.222 0.214 0.206

</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="10.3" PeakHeight="296.121" Num="5" zHalfNm="238.709" Error="2.095">
-143.806 38.226 -9.2 -2.916 1.575
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="70.0" Depth="0.15"/>
<TopsideChapman PeakHeight="296.121" PeakDensity="1316253.1" PeakScaleHeight="42.775" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
