<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 17:10:00.000"
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" >
2026.03.14 (073) 17:10:00</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">
FF202607303141710009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="13.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.673" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="35.681" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="12.250" 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="3.241" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.291" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="352.843" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="270.297" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.148" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="112.100" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.842" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="61.493" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="132.950" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.460" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="185">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7 12.75 12.8 12.85 12.9 12.95 13.0 13.05 13.1 13.15 13.2 13.25 13.3 13.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 220.000 220.000 225.000 229.167 233.333 237.500 241.667 245.833 250.000 255.000 260.000 265.000 270.000 275.000 280.000 282.500 285.000 290.000 290.000 295.000 295.000 295.000 295.000 295.625 296.250 296.875 297.500 298.125 298.750 299.375 300.000 300.000 305.000 305.000 305.000 305.000 305.000 305.000 305.000 305.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 316.250 317.500 318.750 320.000 321.250 322.500 323.750 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 355.000 350.000 350.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 366.667 368.333 370.000 371.667 373.333 375.000 376.667 378.333 380.000 380.000 380.000 380.000 380.000 380.000 381.500 383.000 384.500 386.000 387.500 389.000 390.500 392.000 393.500 395.000 395.000 395.000 398.333 401.667 405.000 405.000 405.000 405.000 407.500 410.000 410.000 410.000 410.000 410.000 415.000 420.000 421.250 422.500 423.750 425.000 425.000 430.000 430.000 430.000 430.000 432.500 435.000 437.500 440.000 450.000 451.667 453.333 455.000 460.000 465.000 465.000 470.000 470.000 475.000 480.000 485.000 490.000 495.000 500.000 506.421 513.646 521.837 531.202 542.011 554.628 569.547
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 45 45 45 45 0 0 45 0 0 48 48 0 48 45 48 48 0 45 51 48 51 51 51 48 0 54 0 0 0 57 0 54 54 54 54 57 57 57 54 54 57 57 0 57 57 57 0 57 60 57 57 60 57 48 0 0 0 0 0 0 0 60 60 57 60 63 0 60 63 60 0 60 66 57 0 57 63 66 0 63 60 63 66 0 63 63 63 63 51 48 63 63 63 0 60 66 60 0 60 63 63 57 57 60 63 63 60 60 48 0 51 0 0 0 0 0 0 57 57 60 57 54 54 0 42 0 0 0 0 0 0 0 54 57 57 0 0 42 45 0 54 0 48 0 57 0 51 57 48 0 42 0 54 57 54 0 54 54 0 54 48 0 48 0 0 57 54 48 54 51 51 51 51 51 51 51 48 48 48 48 51 51 42 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 1.171875 -0.390625 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 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -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
</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" >
89.506 90.0 95.0 100.0 105.0 110.0 112.168 114.336 115.0 116.504 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 352.843 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.18 2.805 3.135 3.241 3.119 3.119 3.156 3.241 3.343 3.48 3.612 3.741 3.87 4.0 4.132 4.267 4.405 4.547 4.694 4.847 5.006 5.171 5.345 5.527 5.718 5.919 6.13 6.351 6.584 6.829 7.084 7.35 7.626 7.911 8.204 8.502 8.806 9.113 9.422 9.731 10.039 10.346 10.65 10.95 11.246 11.535 11.816 12.088 12.347 12.59 12.812 13.006 13.165 13.279 13.341 13.35 13.348 13.333 13.301 13.255 13.194 13.12 13.033 12.935 12.827 12.708 12.581 12.446 12.303 12.153 11.997 11.836 11.671 11.501 11.327 11.151 10.972 10.791 10.608 10.424 10.24 10.054 9.869 9.684 9.499 9.315 9.132 8.95 8.769 8.59 8.413 8.237 8.063 7.892 7.722 7.555 7.39 7.227 7.067 6.91 6.755 6.602 6.453 6.306 6.161 6.019 5.88 5.743 5.609 5.478 5.349 5.223 5.1 4.979 4.861 4.745 4.631 4.52 4.412 4.305 4.201 4.1 4.001 3.904 3.809 3.716 3.625 3.537 3.45 3.366 3.283 3.203 3.124 3.047 2.972 2.899 2.828 2.758 2.69 2.623 2.558 2.495 2.433 2.373 2.314 2.256 2.2 2.146 2.092 2.04 1.99 1.94 1.892 1.845 1.799 1.754 1.71 1.667 1.626 1.585 1.546 1.507 1.469 1.433 1.397 1.362 1.328 1.295 1.262 1.231 1.2 1.17 1.141 1.112 1.084 1.057 1.031 1.005 0.98 0.955 0.931 0.908 0.885 0.863 0.841 0.82

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.241" PeakHeight="110.0" Num="3" Error="0.0">
-30.389 12.987 -3.092
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.241" EndFrequency="13.35" PeakHeight="352.843" Num="5" zHalfNm="270.297" Error="4.812">
-187.646 -52.161 3.286 -2.683 2.865
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.504" Depth="0.122"/>
<TopsideChapman PeakHeight="352.843" PeakDensity="2211197.2" PeakScaleHeight="61.493" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
