<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-06 -065 21:00:00.000"
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 F2o 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" >
2026.03.06 (065) 21:00:00</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">
FF202606503062100009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.340" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.807" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="9.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="525.000" 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="1.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="421.053" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="309.470" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.451" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="158.146" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.878" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="79.920" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="164.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="150">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.35 10.4 10.45 10.5 10.55 10.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 280.000 277.500 275.000 280.000 280.000 280.000 280.000 280.000 281.667 283.333 285.000 285.000 286.000 287.000 288.000 289.000 290.000 290.000 292.000 294.000 296.000 298.000 300.000 302.500 305.000 300.000 300.000 300.000 301.429 302.857 304.286 305.714 307.143 308.571 310.000 312.500 315.000 316.250 317.500 318.750 320.000 321.250 322.500 323.750 325.000 330.000 331.000 332.000 333.000 334.000 335.000 340.000 340.000 340.000 345.000 350.000 351.250 352.500 353.750 355.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 367.500 370.000 372.500 375.000 375.000 380.000 380.000 383.000 386.000 389.000 392.000 395.000 395.000 395.000 400.000 400.000 402.500 405.000 410.000 415.000 415.000 420.000 420.000 425.000 425.000 427.500 430.000 435.000 435.000 435.000 440.000 445.000 445.000 450.000 450.000 455.000 460.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 480.000 480.000 485.000 490.000 490.000 495.000 495.000 500.000 505.000 505.000 510.000 515.000 515.000 520.000 525.000 525.000 530.000 535.000 540.000 545.000 550.000 555.000 560.000 565.000 570.000 575.000 585.000 590.000 595.000 600.895 607.407 614.639 622.716 631.797 642.081 653.824 667.359 683.132
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 48 0 51 51 57 60 54 51 0 0 54 57 0 0 0 0 54 0 0 0 0 0 0 0 0 66 0 0 0 0 57 0 0 0 63 51 66 0 0 0 0 63 0 0 0 0 0 0 0 0 0 69 72 69 66 54 0 0 0 63 51 0 0 60 66 66 66 0 66 60 66 66 60 60 0 0 51 0 60 69 72 72 69 0 66 60 54 69 63 60 57 69 0 69 63 72 75 69 57 63 57 66 0 51 66 72 66 69 66 69 66 63 72 69 57 66 63 66 66 63 66 60 60 63 63 63 60 0 0 0 63 0 0 54 54 54 54 51 54 51 48 48 48 51 51 48 45 45 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 2.734375 -0.390625 -0.390625 -1.171875 -1.953125 2.734375 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -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 2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -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 -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 -1.171875 -1.171875 -1.953125 -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 -2.734375
</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" >
90.008 95.0 100.0 105.0 110.0 115.0 120.0 122.405 125.0 130.0 134.81 135.0 140.0 145.0 147.215 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 421.053 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.904 1.173 1.311 1.354 1.33 1.256 1.2 1.2 1.2 1.2 1.202 1.264 1.327 1.354 1.419 1.529 1.635 1.744 1.857 1.977 2.106 2.245 2.398 2.566 2.751 2.953 3.172 3.405 3.649 3.898 4.148 4.396 4.639 4.877 5.108 5.333 5.553 5.767 5.976 6.18 6.38 6.577 6.77 6.96 7.147 7.332 7.515 7.695 7.874 8.05 8.225 8.399 8.571 8.741 8.909 9.075 9.239 9.4 9.558 9.712 9.861 10.003 10.137 10.26 10.369 10.461 10.532 10.579 10.599 10.6 10.598 10.587 10.57 10.545 10.513 10.475 10.43 10.38 10.324 10.262 10.196 10.125 10.05 9.971 9.888 9.801 9.711 9.618 9.523 9.425 9.324 9.222 9.118 9.012 8.904 8.796 8.686 8.575 8.464 8.352 8.239 8.126 8.013 7.9 7.787 7.673 7.561 7.448 7.336 7.224 7.113 7.002 6.893 6.784 6.675 6.568 6.461 6.356 6.251 6.148 6.045 5.944 5.843 5.744 5.646 5.549 5.454 5.359 5.266 5.174 5.083 4.994 4.905 4.818 4.733 4.648 4.565 4.483 4.402 4.322 4.244 4.167 4.091 4.016 3.942 3.87 3.799 3.729 3.66 3.592 3.526 3.46 3.396 3.333 3.271 3.21 3.15 3.091 3.033 2.976 2.92 2.865 2.811 2.758 2.706 2.655 2.604 2.555 2.507 2.459 2.412 2.367 2.322 2.277 2.234 2.192 2.15 2.109 2.069 2.029 1.99 1.952 1.915 1.878 1.842 1.807

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.354" PeakHeight="110.0" Num="3" Error="0.0">
-27.749 9.426 -1.669
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.354" EndFrequency="10.6" PeakHeight="421.053" Num="5" zHalfNm="309.47" Error="5.706">
-263.645 -21.835 22.756 -17.159 6.045
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="37.215" Depth="0.154"/>
<TopsideChapman PeakHeight="421.053" PeakDensity="1394044.6" PeakScaleHeight="79.92" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
