<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-04 -063 12:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.03.04 (063) 12:40:00</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">
FF202606303041240009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.673" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.477" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.500" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="440.000" 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="3.164" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.254" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="345.439" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.475" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.232" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="120.577" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.071" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.188" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="147.340" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.380" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="155">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 230.000 230.000 232.500 235.000 237.500 240.000 242.500 245.000 247.500 250.000 255.000 257.500 260.000 265.000 270.000 275.000 280.000 275.000 276.875 278.750 280.625 282.500 284.375 286.250 288.125 290.000 292.500 295.000 297.500 300.000 300.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 305.000 310.000 310.833 311.667 312.500 313.333 314.167 315.000 310.000 310.000 310.000 310.000 315.000 316.429 317.857 319.286 320.714 322.143 323.571 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 365.000 365.000 367.500 370.000 372.500 375.000 377.500 380.000 375.000 378.333 381.667 385.000 385.000 387.500 390.000 390.000 390.000 390.000 395.000 395.000 395.000 400.000 401.667 403.333 405.000 407.500 410.000 410.000 412.500 415.000 415.000 415.000 420.000 420.000 420.000 420.000 420.000 425.000 425.000 430.000 430.000 432.500 435.000 440.000 440.000 440.000 440.000 445.000 450.000 455.000 460.000 460.000 465.000 468.333 471.667 475.000 480.000 480.000 484.842 490.410 496.881 504.492 513.576 524.605 538.278 555.677 578.564
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 45 51 0 0 48 0 0 48 0 0 48 0 48 48 0 0 45 48 0 0 0 51 0 0 0 57 0 51 0 48 54 63 63 60 63 66 63 63 69 66 60 0 0 0 0 0 63 63 0 0 48 63 0 0 0 0 0 0 60 60 72 72 66 66 60 51 60 66 66 69 63 63 63 57 63 69 72 69 69 72 69 66 66 66 72 69 63 69 69 0 63 0 60 0 51 66 0 0 57 63 0 54 63 60 60 63 0 63 63 0 0 60 0 48 51 0 51 0 42 45 48 0 0 0 51 51 51 51 45 48 45 0 48 0 0 48 48 45 48 42 0 0 48 48 48 48 48 45 0 0 51 42 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 2.734375 -0.390625 0.390625 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 2.734375 0.390625 0.390625 -1.171875 1.171875 -1.171875 0.390625 0.390625 -1.171875 -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 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 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 -2.734375 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -1.953125 0.390625 0.390625 -0.390625 -0.390625 -0.390625 2.734375 0.390625 0.390625 -2.734375 -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 -1.171875 -1.953125 -1.171875
</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" >
89.519 90.0 95.0 100.0 105.0 110.0 112.499 114.997 115.0 117.496 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 345.439 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.128 2.738 3.061 3.164 3.042 3.042 3.042 3.164 3.245 3.402 3.555 3.707 3.86 4.015 4.172 4.333 4.499 4.669 4.844 5.024 5.21 5.401 5.598 5.801 6.009 6.223 6.441 6.665 6.892 7.124 7.359 7.597 7.837 8.079 8.323 8.568 8.814 9.06 9.306 9.552 9.797 10.041 10.282 10.52 10.754 10.982 11.203 11.412 11.607 11.782 11.931 12.046 12.121 12.15 12.15 12.144 12.126 12.095 12.053 11.999 11.936 11.862 11.78 11.689 11.591 11.485 11.373 11.254 11.13 11.001 10.868 10.73 10.589 10.445 10.298 10.149 9.998 9.845 9.691 9.535 9.379 9.223 9.066 8.909 8.753 8.597 8.441 8.287 8.133 7.98 7.829 7.679 7.53 7.382 7.237 7.093 6.95 6.81 6.671 6.535 6.4 6.267 6.136 6.007 5.881 5.756 5.634 5.513 5.395 5.278 5.164 5.052 4.942 4.834 4.728 4.624 4.522 4.422 4.324 4.228 4.133 4.041 3.951 3.862 3.775 3.69 3.607 3.526 3.446 3.368 3.292 3.217 3.144 3.072 3.002 2.934 2.867 2.801 2.737 2.674 2.613 2.553 2.495 2.437 2.381 2.326 2.273 2.22 2.169 2.119 2.07 2.023 1.976 1.93 1.886 1.842 1.799 1.758 1.717 1.677 1.638 1.6 1.563 1.527 1.492 1.457 1.423 1.39 1.358 1.326 1.295 1.265 1.236 1.207 1.179 1.152 1.125 1.099 1.073 1.048 1.024 1.0 0.977 0.954 0.932 0.91

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.164" PeakHeight="110.0" Num="3" Error="0.0">
-30.329 12.899 -3.051
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.164" EndFrequency="12.15" PeakHeight="345.439" Num="5" zHalfNm="255.475" Error="3.395">
-190.435 -46.413 10.465 -3.108 1.548
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.496" Depth="0.122"/>
<TopsideChapman PeakHeight="345.439" PeakDensity="1831544.6" PeakScaleHeight="66.188" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
