<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 16:30:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</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" >
2026.03.02 (061) 16:30:00</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">
FF202606103021630009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.588" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.673" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.000" 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="3.335" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.335" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="359.400" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.569" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.899" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="116.659" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.185" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.691" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.140" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="126">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 315.000 315.000 320.000 320.000 320.000 322.500 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 337.500 340.000 340.000 342.500 345.000 345.000 347.500 350.000 350.000 350.000 355.000 355.000 355.000 355.000 356.667 358.333 360.000 365.000 365.000 370.000 370.000 370.000 370.000 372.500 375.000 377.500 380.000 380.000 380.000 380.000 380.000 383.333 386.667 390.000 390.000 392.500 395.000 395.000 395.000 395.000 397.500 400.000 402.500 405.000 405.000 410.000 412.500 415.000 415.000 415.000 415.000 415.000 420.000 420.000 425.000 425.000 430.000 430.000 430.000 435.000 435.000 435.000 435.000 435.000 440.000 442.000 444.000 446.000 448.000 450.000 450.000 452.500 455.000 456.667 458.333 460.000 460.000 460.000 460.000 460.000 465.000 465.000 465.000 470.000 475.000 475.000 477.500 480.000 482.500 485.000 486.667 488.333 490.000 490.000 490.000 490.000 500.000 505.000 510.000 510.000 515.000 520.000 525.000 530.000 535.000 541.943 549.938 559.244
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 51 57 60 48 54 51 0 57 60 51 51 57 51 60 57 54 0 54 48 0 51 48 0 54 54 48 57 57 51 45 0 0 54 63 63 57 60 60 57 0 0 0 60 60 60 60 51 0 0 54 63 0 60 66 66 66 0 0 0 57 63 51 0 45 48 0 57 60 57 60 57 60 51 57 63 57 60 66 54 60 60 0 0 57 0 54 60 0 54 0 0 48 54 57 60 57 57 57 54 0 45 51 0 0 0 45 0 0 51 0 0 0 51 48 51 54 48 51 51 48 0 42 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 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 -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 -1.171875 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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 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 1.953125
</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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.775 113.55 115.0 115.325 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.4 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.244 2.886 3.226 3.335 3.212 3.212 3.312 3.335 3.529 3.709 3.875 4.032 4.186 4.336 4.484 4.632 4.78 4.928 5.077 5.227 5.378 5.53 5.684 5.84 5.998 6.157 6.319 6.482 6.648 6.816 6.986 7.159 7.334 7.511 7.69 7.872 8.057 8.244 8.434 8.626 8.821 9.019 9.22 9.424 9.631 9.841 10.053 10.268 10.486 10.705 10.924 11.141 11.35 11.544 11.706 11.816 11.85 11.85 11.842 11.821 11.788 11.744 11.689 11.624 11.549 11.466 11.375 11.276 11.17 11.058 10.94 10.816 10.688 10.556 10.419 10.28 10.137 9.992 9.844 9.695 9.544 9.392 9.239 9.086 8.932 8.778 8.624 8.471 8.317 8.165 8.013 7.863 7.713 7.565 7.418 7.272 7.128 6.986 6.845 6.706 6.569 6.434 6.301 6.169 6.04 5.913 5.787 5.664 5.543 5.423 5.306 5.191 5.078 4.967 4.858 4.751 4.646 4.544 4.443 4.344 4.247 4.152 4.059 3.967 3.878 3.79 3.705 3.621 3.539 3.458 3.379 3.302 3.227 3.153 3.081 3.01 2.941 2.874 2.808 2.743 2.68 2.618 2.557 2.498 2.44 2.384 2.329 2.275 2.222 2.17 2.12 2.071 2.023 1.976 1.93 1.885 1.841 1.798 1.756 1.715 1.675 1.636 1.598 1.56 1.524 1.488 1.454 1.42 1.386 1.354 1.322 1.291 1.261 1.232 1.203 1.175 1.147 1.12 1.094 1.068 1.043 1.019 0.995 0.972 0.949 0.927

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.335" PeakHeight="110.0" Num="3" Error="0.0">
-30.461 13.093 -3.14
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.335" EndFrequency="11.85" PeakHeight="359.4" Num="5" zHalfNm="268.569" Error="3.233">
-191.574 -73.865 22.317 -2.152 1.199
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.325" Depth="0.123"/>
<TopsideChapman PeakHeight="359.4" PeakDensity="1742214.6" PeakScaleHeight="65.691" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
