<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-13 -072 18:10:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2o 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" >
2026.03.13 (072) 18:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607203131810009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.651" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.764" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.580" 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="3.028" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.188" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="347.911" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.569" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.435" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="114.048" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="41.167" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="63.308" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="155.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.120" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 240.000 240.000 240.000 243.077 246.154 249.231 252.308 255.385 258.462 261.538 264.615 267.692 270.769 273.846 276.923 280.000 280.000 280.000 285.000 285.000 290.000 290.000 290.000 295.000 300.000 302.500 305.000 305.000 310.000 310.000 310.000 310.000 315.000 320.000 320.000 320.000 322.500 325.000 325.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 352.500 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 375.000 375.000 370.000 372.500 375.000 380.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 397.500 400.000 400.000 402.500 405.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 420.000 420.000 425.000 425.000 425.000 430.000 430.000 430.000 432.000 434.000 436.000 438.000 440.000 440.000 445.000 450.000 447.500 445.000 450.000 455.000 455.000 460.000 460.000 462.500 465.000 467.500 470.000 470.000 475.000 480.000 480.000 481.098 482.375 483.879 485.676 487.863 490.580 494.046 498.623 504.945 514.245 529.275 557.692
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 48 45 0 0 0 0 0 0 0 0 0 0 0 0 45 0 54 48 57 51 57 57 63 60 0 57 60 57 60 57 60 0 63 63 60 0 63 57 63 63 63 63 63 63 0 63 60 63 63 60 63 0 63 63 63 0 57 66 0 54 66 60 0 54 63 0 66 69 60 66 57 63 48 69 63 0 60 66 57 66 54 63 66 60 66 57 66 69 72 69 72 72 69 69 66 0 51 0 0 60 63 63 48 54 63 48 57 60 54 57 0 54 0 51 57 51 45 54 51 54 51 51 51 0 48 48 51 51 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 0.390625 0.390625 -2.734375 -0.390625 2.734375 -0.390625 -2.734375 1.171875 1.953125 1.171875 1.171875 2.734375 1.953125 1.171875 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -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 -2.734375 -0.390625 2.734375 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 1.953125 2.734375
</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" >
89.542 90.0 95.0 100.0 105.0 110.0 113.094 115.0 116.187 119.281 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 347.911 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.036 2.621 2.93 3.028 2.906 2.906 2.906 3.028 3.046 3.177 3.311 3.45 3.592 3.738 3.887 4.04 4.196 4.355 4.516 4.68 4.846 5.013 5.183 5.354 5.527 5.7 5.876 6.052 6.229 6.408 6.587 6.768 6.949 7.132 7.316 7.502 7.688 7.876 8.066 8.258 8.451 8.646 8.843 9.042 9.242 9.445 9.649 9.853 10.056 10.255 10.445 10.617 10.754 10.836 10.85 10.849 10.837 10.813 10.777 10.731 10.674 10.607 10.532 10.448 10.357 10.258 10.153 10.042 9.926 9.805 9.68 9.551 9.418 9.283 9.145 9.005 8.863 8.719 8.575 8.429 8.283 8.137 7.991 7.845 7.699 7.554 7.409 7.265 7.123 6.981 6.841 6.703 6.565 6.43 6.296 6.163 6.033 5.904 5.777 5.652 5.529 5.408 5.289 5.172 5.058 4.945 4.834 4.725 4.618 4.513 4.41 4.31 4.211 4.114 4.019 3.926 3.835 3.746 3.659 3.573 3.49 3.408 3.328 3.249 3.173 3.098 3.025 2.953 2.883 2.814 2.748 2.682 2.618 2.556 2.495 2.435 2.377 2.32 2.264 2.21 2.157 2.105 2.054 2.005 1.957 1.909 1.863 1.818 1.775 1.732 1.69 1.649 1.609 1.57 1.532 1.495 1.459 1.424 1.389 1.355 1.323 1.291 1.259 1.229 1.199 1.17 1.141 1.114 1.087 1.06 1.034 1.009 0.985 0.961 0.937 0.915 0.892 0.871 0.85 0.829 0.809 0.789 0.77 0.751 0.733 0.715

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.028" PeakHeight="110.0" Num="3" Error="0.0">
-30.218 12.737 -2.977
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.028" EndFrequency="10.85" PeakHeight="347.911" Num="5" zHalfNm="259.569" Error="1.241">
-181.279 -63.042 20.195 -5.14 0.636
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.281" Depth="0.122"/>
<TopsideChapman PeakHeight="347.911" PeakDensity="1460576.9" PeakScaleHeight="63.308" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
