<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-06 -065 22:00:00.000"
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: 80% PACIFIC flags: Multiple candidates for F2x cusp, 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) 22:00:00</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">
FF202606503062200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.414" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.696" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="0.550" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="545.898" 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="0.367" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="449.690" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="377.420" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.811" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="106.925" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="25.459" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="53.989" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="111.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="134">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 350.000 360.000 355.000 355.000 355.833 356.667 357.500 358.333 359.167 360.000 365.000 365.833 366.667 367.500 368.333 369.167 370.000 370.000 370.000 370.000 372.000 374.000 376.000 378.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 381.250 382.500 383.750 385.000 386.250 387.500 388.750 390.000 391.250 392.500 393.750 395.000 396.250 397.500 398.750 400.000 395.000 398.000 401.000 404.000 407.000 410.000 405.000 405.000 410.000 410.000 410.000 410.000 411.667 413.333 415.000 416.667 418.333 420.000 421.667 423.333 425.000 425.000 426.250 427.500 428.750 430.000 430.000 435.000 435.000 435.000 440.000 445.000 445.000 445.000 445.000 445.000 447.500 450.000 455.000 455.000 455.000 460.000 462.500 465.000 467.500 470.000 470.000 470.000 470.000 475.000 477.500 480.000 480.000 485.000 490.000 490.000 490.000 495.000 495.000 500.000 500.000 505.000 510.000 510.000 510.000 515.000 520.000 520.000 525.000 530.000 535.000 535.000 535.000 540.000 542.796 545.898 549.359 553.247 557.645 562.660 568.432 575.147 583.056 592.509 604.006 618.291
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 57 54 66 51 0 0 0 0 0 57 57 0 0 0 0 0 66 0 0 69 0 60 0 0 48 51 0 0 0 60 57 0 0 0 54 0 0 0 57 0 0 0 0 0 0 0 51 57 0 0 0 0 48 60 0 48 0 0 60 0 60 0 0 0 0 0 0 57 57 0 0 0 57 54 54 60 57 54 45 51 0 60 60 0 63 57 0 63 60 0 0 0 51 60 63 60 60 0 57 57 57 54 60 63 63 63 63 60 0 60 60 54 0 63 57 0 60 57 60 0 57 57 60 60 60 60 60 60 60 57 48 0 0
</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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 2.734375 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -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 -2.734375 -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 -0.390625 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 -1.953125 -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 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -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" >
93.228 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.815 140.0 145.0 150.0 155.0 160.0 165.0 169.629 170.0 175.0 180.0 185.0 190.0 195.0 199.444 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 449.69 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.243 0.318 0.355 0.367 0.363 0.352 0.333 0.303 0.261 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.202 0.23 0.258 0.286 0.314 0.342 0.367 0.375 0.446 0.516 0.587 0.661 0.741 0.827 0.918 1.018 1.124 1.239 1.362 1.494 1.634 1.783 1.941 2.107 2.282 2.465 2.655 2.853 3.059 3.271 3.49 3.715 3.947 4.184 4.427 4.674 4.927 5.184 5.444 5.709 5.976 6.245 6.516 6.787 7.057 7.324 7.588 7.846 8.096 8.334 8.558 8.764 8.948 9.105 9.233 9.326 9.383 9.4 9.4 9.391 9.368 9.331 9.28 9.218 9.145 9.062 8.97 8.869 8.76 8.645 8.524 8.397 8.266 8.131 7.993 7.851 7.708 7.562 7.415 7.267 7.119 6.97 6.822 6.674 6.526 6.38 6.234 6.09 5.947 5.806 5.667 5.529 5.394 5.261 5.13 5.001 4.874 4.75 4.628 4.508 4.391 4.276 4.164 4.054 3.947 3.842 3.739 3.639 3.541 3.445 3.352 3.26 3.172 3.085 3.0 2.918 2.838 2.759 2.683 2.609 2.537 2.466 2.397 2.331 2.266 2.202 2.141 2.081 2.023 1.966 1.911 1.857 1.805 1.754 1.704 1.656 1.61 1.564 1.52 1.477 1.435 1.395 1.355 1.317 1.28 1.243 1.208 1.174 1.141 1.108 1.077 1.046 1.016 0.988 0.959 0.932 0.906 0.88 0.855 0.831 0.807 0.784 0.762 0.74 0.719 0.699 0.679 0.659 0.641

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.367" PeakHeight="110.0" Num="3" Error="0.0">
-19.239 2.629 -0.162
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.367" EndFrequency="9.4" PeakHeight="449.69" Num="5" zHalfNm="377.42" Error="3.886">
-238.805 -22.825 13.835 -4.349 1.898
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="89.444" Depth="0.167"/>
<TopsideChapman PeakHeight="449.69" PeakDensity="1096277.9" PeakScaleHeight="53.989" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
