<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-24 -083 10:50:00.000"
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" >
2026.03.24 (083) 10:50:00</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">
FF202608303241050009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.950" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.059" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="395.000" 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="2.619" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="303.210" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.410" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.933" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="103.288" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.515" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="56.579" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="112.470" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.800" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="132">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 220.000 220.000 220.000 220.000 220.000 220.000 225.000 225.000 225.000 230.000 230.000 230.000 231.667 233.333 235.000 236.875 238.750 240.625 242.500 244.375 246.250 248.125 250.000 250.000 250.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 262.000 264.000 266.000 268.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 272.500 275.000 280.000 280.000 280.000 285.000 286.250 287.500 288.750 290.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 305.000 310.000 310.000 310.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 385.000 385.000 390.000 390.000 395.000 395.000 405.000 405.000 410.000 420.000 425.000 435.000 445.000 460.000 483.344 519.311
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 54 0 0 54 54 54 57 54 57 54 48 0 0 51 0 57 0 0 0 0 0 60 57 54 63 63 63 60 63 63 63 66 63 63 60 60 0 0 0 0 0 66 0 66 0 66 63 60 57 51 0 66 66 69 69 60 0 0 0 51 57 0 63 0 66 66 63 66 54 0 66 66 57 60 66 69 69 66 69 69 63 66 66 60 66 66 57 63 66 60 66 69 66 69 69 66 72 72 69 69 66 69 63 69 69 69 69 69 69 66 69 69 69 69 63 69 66 69 69 69 66 66 66 66 63 66 63 60 54 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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 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 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
</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" >
89.615 90.0 95.0 100.0 105.0 110.0 114.994 115.0 119.987 120.0 124.981 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 303.21 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.759 2.267 2.534 2.619 2.496 2.496 2.496 2.496 2.619 2.62 2.759 2.899 3.041 3.187 3.338 3.497 3.665 3.842 4.03 4.23 4.443 4.669 4.908 5.16 5.423 5.695 5.974 6.258 6.543 6.828 7.111 7.389 7.662 7.927 8.185 8.432 8.669 8.892 9.1 9.29 9.459 9.602 9.717 9.798 9.842 9.85 9.849 9.836 9.81 9.771 9.719 9.656 9.583 9.5 9.408 9.308 9.2 9.087 8.967 8.842 8.712 8.579 8.441 8.301 8.159 8.014 7.868 7.721 7.573 7.425 7.276 7.127 6.979 6.832 6.685 6.54 6.396 6.253 6.111 5.972 5.834 5.698 5.564 5.432 5.302 5.174 5.049 4.925 4.804 4.686 4.569 4.455 4.343 4.234 4.126 4.021 3.919 3.818 3.72 3.624 3.531 3.439 3.35 3.262 3.177 3.094 3.013 2.933 2.856 2.781 2.707 2.635 2.565 2.497 2.431 2.366 2.303 2.241 2.182 2.123 2.066 2.011 1.957 1.904 1.853 1.803 1.755 1.708 1.662 1.617 1.573 1.531 1.489 1.449 1.41 1.372 1.335 1.299 1.263 1.229 1.196 1.164 1.132 1.101 1.071 1.042 1.014 0.987 0.96 0.934 0.908 0.884 0.86 0.836 0.814 0.792 0.77 0.749 0.729 0.709 0.69 0.671 0.653 0.635 0.618 0.601 0.584 0.569 0.553 0.538 0.523 0.509 0.495 0.482 0.469 0.456 0.444 0.431 0.42 0.408 0.397 0.386 0.376 0.366 0.356 0.346

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.619" PeakHeight="110.0" Num="3" Error="0.0">
-29.84 12.189 -2.734
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.619" EndFrequency="9.85" PeakHeight="303.21" Num="5" zHalfNm="227.41" Error="1.885">
-155.765 -22.5 0.846 -2.155 1.345
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="14.981" Depth="0.123"/>
<TopsideChapman PeakHeight="303.21" PeakDensity="1203753.1" PeakScaleHeight="56.579" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
