<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-13 -072 12:10:00.000"
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" >
2026.03.13 (072) 12:10:00</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">
FF202607203131210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.106" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="40.218" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="12.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="365.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.059" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.203" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="292.983" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="238.711" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.186" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="75.409" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="39.959" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="43.137" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="101.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.100" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="152">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
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</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 48 54 57 54 57 54 57 0 60 51 60 57 60 0 60 57 57 60 63 63 63 0 63 66 66 66 54 0 0 63 69 66 0 66 72 72 69 66 63 69 69 69 66 66 66 66 72 0 72 72 0 72 69 66 0 0 69 69 57 54 0 69 69 66 63 0 63 72 72 69 66 0 66 69 69 69 63 0 66 66 63 51 51 66 54 0 63 63 0 54 63 0 0 54 0 0 57 54 0 42 45 0 0 51 51 0 0 57 57 0 0 0 0 57 45 0 0 51 0 54 0 51 54 0 57 54 57 0 0 0 0 48 51 0 51 51 51 0 51 0 42 48 51 48 0 0 0 0 51 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="175">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.535 90.0 95.0 100.0 105.0 110.0 112.953 115.0 115.907 118.86 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 292.983 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.057 2.648 2.96 3.059 2.937 2.937 2.937 3.059 3.143 3.429 3.662 3.874 4.074 4.269 4.462 4.655 4.849 5.045 5.246 5.451 5.663 5.882 6.11 6.348 6.597 6.86 7.138 7.433 7.749 8.087 8.451 8.845 9.27 9.726 10.21 10.711 11.208 11.674 12.084 12.42 12.675 12.847 12.936 12.95 12.947 12.918 12.858 12.77 12.656 12.52 12.363 12.188 11.998 11.793 11.576 11.349 11.114 10.873 10.626 10.374 10.121 9.865 9.609 9.353 9.098 8.844 8.593 8.345 8.1 7.858 7.621 7.388 7.159 6.935 6.717 6.503 6.294 6.09 5.892 5.699 5.511 5.328 5.151 4.978 4.811 4.648 4.491 4.338 4.19 4.047 3.908 3.773 3.643 3.517 3.395 3.278 3.164 3.053 2.947 2.844 2.745 2.649 2.556 2.466 2.379 2.296 2.215 2.137 2.062 1.989 1.919 1.851 1.786 1.723 1.662 1.603 1.546 1.492 1.439 1.388 1.339 1.291 1.245 1.201 1.159 1.118 1.078 1.04 1.003 0.967 0.933 0.9 0.868 0.837 0.807 0.779 0.751 0.724 0.698 0.674 0.65 0.627 0.604 0.583 0.562 0.542 0.523 0.504 0.486 0.469 0.452 0.436 0.421 0.406 0.391 0.377 0.364 0.351 0.339 0.327 0.315 0.304 0.293 0.283 0.272 0.263 0.253 0.244 0.236 0.227 0.219 0.211 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.059" PeakHeight="110.0" Num="3" Error="0.0">
-30.244 12.774 -2.995
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.059" EndFrequency="12.95" PeakHeight="292.983" Num="5" zHalfNm="238.711" Error="4.389">
-139.901 -40.801 -0.331 7.488 -0.578
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.86" Depth="0.122"/>
<TopsideChapman PeakHeight="292.983" PeakDensity="2080676.1" PeakScaleHeight="43.137" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
