<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 09:00:00.000"
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: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o 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" >
2026.03.05 (064) 09:00:00</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">
FF202606403050900009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.289" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.776" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="335.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.991" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="277.164" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="229.403" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.177" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="67.460" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.135" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="36.674" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="71.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.900" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="54">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 250.000 250.000 245.000 245.000 245.000 247.273 249.545 251.818 254.091 256.364 258.636 260.909 263.182 265.455 267.727 270.000 270.000 270.000 270.000 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 280.000 282.500 285.000 290.000 287.500 285.000 287.500 290.000 295.000 300.000 305.000 300.000 305.000 310.000 315.000 315.000 320.000 322.500 325.000 330.000 335.000 335.000 355.000 355.000 362.247 433.990
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 66 63 57 54 0 0 0 0 60 63 0 0 0 51 60 57 63 0 0 60 0 69 69 72 72 69 63 0 66 57 0 66 0 72 69 0 66 69 0 0 63 69 72 60 69 66 57 60 48 51 48 54
</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 1.171875 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 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="130">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.281 95.0 100.0 105.0 110.0 115.0 120.0 125.0 127.15 130.0 135.0 140.0 144.301 145.0 150.0 155.0 160.0 161.451 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 277.164 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.66 0.859 0.959 0.991 0.974 0.923 0.831 0.776 0.776 0.776 0.776 0.776 0.785 0.847 0.91 0.973 0.991 1.091 1.244 1.403 1.567 1.735 1.908 2.088 2.276 2.474 2.683 2.905 3.139 3.384 3.637 3.891 4.139 4.37 4.576 4.751 4.891 4.995 5.064 5.097 5.1 5.097 5.078 5.044 4.994 4.932 4.859 4.777 4.685 4.587 4.483 4.375 4.262 4.147 4.03 3.912 3.794 3.675 3.557 3.44 3.324 3.21 3.098 2.988 2.881 2.776 2.673 2.574 2.477 2.383 2.292 2.203 2.118 2.035 1.955 1.878 1.804 1.732 1.663 1.596 1.532 1.47 1.41 1.353 1.298 1.245 1.194 1.145 1.099 1.053 1.01 0.969 0.929 0.89 0.854 0.818 0.785 0.752 0.721 0.691 0.662 0.635 0.609 0.583 0.559 0.536 0.514 0.492 0.472 0.452 0.433 0.415 0.398 0.382 0.366 0.35 0.336 0.322 0.308 0.296 0.283 0.271 0.26 0.249 0.239 0.229 0.219 0.21 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.991" PeakHeight="110.0" Num="3" Error="0.0">
-26.465 7.955 -1.209
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.991" EndFrequency="5.1" PeakHeight="277.164" Num="5" zHalfNm="229.403" Error="1.932">
-110.439 -5.812 -1.061 2.376 -0.777
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="51.451" Depth="0.215"/>
<TopsideChapman PeakHeight="277.164" PeakDensity="322704.72" PeakScaleHeight="36.674" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
