<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-24 -055 13:10:00.000"
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 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" >
2026.02.24 (055) 13:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.15" 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">
FF202605502241310009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.499" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.620" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="8.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="410.000" 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="3.245" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.293" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="374.215" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.844" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.099" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="184.473" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.907" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="101.661" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="203.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.840" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="96">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
290.000 295.000 300.000 305.000 310.000 310.000 311.667 313.333 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 321.250 322.500 323.750 325.000 326.250 327.500 328.750 330.000 330.000 332.500 335.000 340.000 342.500 345.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 360.000 360.000 362.500 365.000 370.000 370.000 370.000 375.000 380.000 380.000 385.000 385.000 390.000 395.000 400.000 400.000 405.000 410.000 410.000 410.000 415.000 420.000 425.000 435.000 435.000 440.000 440.000 450.000 455.000 460.000 465.000 465.000 470.000 475.000 480.000 485.000 490.000 495.000 500.000 505.000 515.000 520.000 530.000 535.000 545.000 555.000 565.000 575.000 585.000 600.000 620.000 641.605 667.953 700.798 742.881
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 0 0 45 48 0 0 0 0 0 54 54 54 0 57 0 51 54 54 0 0 0 0 0 0 0 54 51 0 51 0 0 51 54 0 57 60 60 60 60 60 63 0 63 60 63 57 60 60 63 60 60 63 60 54 63 60 57 60 60 60 57 60 48 60 60 57 60 60 57 57 60 60 63 60 60 57 57 57 60 60 60 60 57 60 60 60 57 57 54 54 51 45 45 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 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 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 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" >
89.505 90.0 95.0 100.0 105.0 110.0 112.151 114.301 115.0 116.452 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 374.215 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.183 2.808 3.139 3.245 3.123 3.123 3.163 3.245 3.357 3.502 3.64 3.774 3.907 4.04 4.176 4.314 4.454 4.599 4.747 4.898 5.054 5.214 5.377 5.542 5.711 5.881 6.052 6.224 6.396 6.567 6.736 6.904 7.069 7.232 7.392 7.549 7.703 7.853 8.0 8.144 8.284 8.419 8.551 8.679 8.803 8.922 9.036 9.144 9.247 9.344 9.435 9.518 9.593 9.66 9.718 9.766 9.804 9.83 9.846 9.85 9.85 9.847 9.839 9.828 9.812 9.791 9.767 9.74 9.708 9.674 9.635 9.594 9.55 9.503 9.453 9.4 9.345 9.288 9.228 9.167 9.103 9.037 8.97 8.901 8.831 8.759 8.686 8.611 8.536 8.46 8.382 8.304 8.225 8.145 8.065 7.984 7.903 7.821 7.739 7.657 7.574 7.492 7.409 7.326 7.244 7.161 7.078 6.996 6.914 6.832 6.75 6.669 6.588 6.507 6.427 6.347 6.268 6.189 6.11 6.032 5.955 5.878 5.802 5.726 5.651 5.576 5.503 5.429 5.357 5.285 5.214 5.143 5.073 5.004 4.936 4.868 4.801 4.735 4.669 4.604 4.54 4.477 4.414 4.352 4.29 4.23 4.17 4.111 4.052 3.994 3.937 3.881 3.825 3.77 3.716 3.662 3.609 3.557 3.506 3.455 3.404 3.355 3.306 3.258 3.21 3.163 3.117 3.071 3.026 2.981 2.937 2.894 2.851 2.809 2.768 2.727 2.686 2.646 2.607 2.568 2.53 2.492 2.455 2.419 2.383 2.347

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.245" PeakHeight="110.0" Num="3" Error="0.0">
-30.393 12.992 -3.094
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.245" EndFrequency="9.85" PeakHeight="374.215" Num="5" zHalfNm="236.844" Error="5.111">
-245.297 -16.96 5.618 -3.268 2.144
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.452" Depth="0.122"/>
<TopsideChapman PeakHeight="374.215" PeakDensity="1203753.1" PeakScaleHeight="101.661" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
