<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 19:10:00.000"
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" >
2026.03.02 (061) 19:10:00</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">
FF202606103021910009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="13.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.659" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="35.102" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="12.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="456.207" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.712" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="367.457" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="279.796" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.637" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="122.424" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="62.544" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.592" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="138.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.620" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="193">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7 12.75 12.8 12.85 12.9 12.95 13.0 13.05 13.1 13.15 13.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 230.000 231.000 232.000 233.000 234.000 235.000 240.000 240.000 240.000 245.000 250.000 250.000 250.000 250.000 250.000 255.000 260.000 260.000 261.250 262.500 263.750 265.000 265.000 265.000 270.000 270.000 270.000 275.000 275.000 277.000 279.000 281.000 283.000 285.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 300.000 300.000 300.000 300.000 305.000 306.250 307.500 308.750 310.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 330.000 325.000 326.250 327.500 328.750 330.000 330.000 335.000 335.000 335.000 336.667 338.333 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 355.000 352.500 350.000 350.000 350.000 352.500 355.000 355.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 367.500 370.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 380.000 385.000 382.500 380.000 385.000 386.667 388.333 390.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 395.000 395.000 395.000 395.000 397.500 400.000 400.000 400.000 405.000 410.000 410.000 410.000 415.000 415.000 415.000 420.000 420.000 420.000 420.000 420.000 422.500 425.000 430.000 430.000 435.000 435.000 440.000 442.500 445.000 445.000 445.000 450.000 450.000 450.000 452.998 456.207 459.649 463.352 467.345 471.665 476.354 481.459 487.041 493.168 499.925 507.413 515.760 525.120 535.692 547.725 561.546 577.586 596.424 618.864
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 51 51 0 45 0 0 45 51 0 54 54 48 0 63 60 51 0 54 60 0 0 0 60 57 57 63 63 63 60 63 0 0 0 0 0 54 60 63 66 0 0 0 66 66 63 66 66 57 54 0 57 0 0 54 0 0 0 0 0 57 69 66 0 57 48 60 0 0 0 57 60 63 0 63 0 0 60 0 63 0 63 60 66 72 69 66 63 69 57 0 72 66 63 0 72 72 69 72 72 69 0 69 69 0 72 0 66 0 0 66 57 0 0 57 0 60 57 54 54 57 0 48 63 51 0 57 63 0 0 54 0 0 60 60 60 60 57 57 57 0 0 57 0 60 0 57 54 45 0 45 45 0 54 42 0 0 57 63 0 66 60 63 60 66 57 0 57 60 57 66 63 66 66 66 66 66 54 0 0 0 0 48 0 60 57 57 42 0 0 0 42 42
</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 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 2.734375 -0.390625 -0.390625 0.390625 0.390625 -0.390625 -1.171875 -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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 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" >
89.598 90.0 95.0 100.0 105.0 110.0 114.547 115.0 119.095 120.0 123.642 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 367.457 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.822 2.348 2.624 2.712 2.589 2.589 2.589 2.613 2.712 2.748 2.881 3.017 3.156 3.298 3.445 3.595 3.75 3.909 4.073 4.242 4.417 4.597 4.783 4.975 5.174 5.379 5.592 5.811 6.038 6.273 6.515 6.765 7.023 7.289 7.562 7.844 8.132 8.427 8.729 9.036 9.347 9.661 9.976 10.291 10.603 10.911 11.21 11.5 11.776 12.036 12.277 12.495 12.688 12.854 12.989 13.092 13.161 13.196 13.2 13.198 13.184 13.156 13.116 13.063 12.999 12.924 12.839 12.745 12.643 12.532 12.414 12.289 12.158 12.022 11.88 11.733 11.583 11.429 11.272 11.112 10.95 10.786 10.62 10.453 10.285 10.116 9.947 9.778 9.608 9.44 9.271 9.104 8.937 8.771 8.607 8.444 8.282 8.122 7.964 7.807 7.652 7.499 7.348 7.199 7.052 6.907 6.765 6.624 6.486 6.349 6.215 6.084 5.954 5.827 5.702 5.579 5.459 5.34 5.224 5.11 4.998 4.889 4.781 4.676 4.572 4.471 4.372 4.275 4.179 4.086 3.994 3.905 3.817 3.732 3.648 3.565 3.485 3.406 3.329 3.254 3.18 3.108 3.037 2.968 2.9 2.834 2.77 2.706 2.645 2.584 2.525 2.467 2.411 2.356 2.302 2.249 2.197 2.147 2.097 2.049 2.002 1.956 1.911 1.867 1.824 1.782 1.741 1.701 1.662 1.623 1.586 1.549 1.514 1.479 1.444 1.411 1.379 1.347 1.316 1.285 1.255 1.226 1.198 1.17 1.143 1.117

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.712" PeakHeight="110.0" Num="3" Error="0.0">
-29.933 12.323 -2.792
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.712" EndFrequency="13.2" PeakHeight="367.457" Num="5" zHalfNm="279.796" Error="3.274">
-209.107 -37.135 1.102 1.342 -0.017
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.642" Depth="0.123"/>
<TopsideChapman PeakHeight="367.457" PeakDensity="2161786.5" PeakScaleHeight="66.592" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
