<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-11 -070 14:30:00.000"
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" >
2026.03.11 (070) 14:30:00</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">
FF202607003111430009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.610" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.363" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="420.000" 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="3.394" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.362" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="342.224" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="231.028" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.942" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="143.671" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.198" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.854" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="180.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="92">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 300.000 305.000 305.000 305.000 307.500 310.000 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 322.500 325.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 360.000 355.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 430.000 435.000 440.000 440.000 450.000 455.000 460.000 465.000 465.000 470.000 475.000 480.000 490.000 495.000 500.000 506.261 513.115 520.650 528.973 538.215 548.535 560.136 573.271 588.267 605.547
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 48 51 54 0 54 54 57 54 57 0 48 57 57 0 57 54 0 0 63 63 66 60 63 0 63 63 66 66 60 66 63 0 60 66 63 60 63 0 60 63 54 60 63 51 60 60 60 63 57 63 63 60 66 60 60 60 54 60 57 60 60 60 60 60 60 57 57 60 57 57 57 57 57 60 57 57 57 57 54 54 57 57 51 54 54 54 51 48 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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 -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" >
89.483 90.0 95.0 100.0 105.0 110.0 111.534 113.068 114.602 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 342.224 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.283 2.937 3.283 3.394 3.271 3.271 3.394 3.411 3.601 3.769 3.927 4.079 4.229 4.378 4.527 4.677 4.828 4.981 5.135 5.292 5.45 5.61 5.772 5.936 6.101 6.267 6.434 6.602 6.77 6.938 7.107 7.276 7.444 7.611 7.778 7.945 8.11 8.274 8.436 8.596 8.755 8.911 9.064 9.213 9.357 9.495 9.625 9.746 9.854 9.947 10.021 10.072 10.097 10.1 10.099 10.091 10.076 10.055 10.026 9.992 9.952 9.906 9.855 9.799 9.738 9.673 9.604 9.53 9.453 9.373 9.29 9.204 9.115 9.023 8.93 8.834 8.737 8.638 8.537 8.436 8.333 8.229 8.124 8.019 7.913 7.807 7.701 7.594 7.488 7.381 7.275 7.168 7.062 6.957 6.852 6.747 6.643 6.54 6.438 6.336 6.235 6.135 6.035 5.937 5.84 5.743 5.648 5.554 5.461 5.368 5.277 5.187 5.099 5.011 4.924 4.839 4.755 4.671 4.589 4.509 4.429 4.351 4.273 4.197 4.122 4.048 3.975 3.904 3.833 3.764 3.696 3.629 3.562 3.497 3.434 3.371 3.309 3.248 3.188 3.129 3.072 3.015 2.959 2.904 2.85 2.797 2.745 2.694 2.644 2.595 2.546 2.499 2.452 2.406 2.361 2.317 2.273 2.23 2.189 2.147 2.107 2.067 2.028 1.99 1.952 1.916 1.879 1.844 1.809 1.775 1.741 1.708 1.676 1.644 1.613 1.582 1.552 1.523 1.494 1.466 1.438 1.41 1.384 1.357 1.332 1.306

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.394" PeakHeight="110.0" Num="3" Error="0.0">
-30.503 13.155 -3.169
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.394" EndFrequency="10.1" PeakHeight="342.224" Num="5" zHalfNm="231.028" Error="4.787">
-199.681 -40.284 13.527 -2.7 1.516
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.602" Depth="0.123"/>
<TopsideChapman PeakHeight="342.224" PeakDensity="1265632.8" PeakScaleHeight="80.854" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
