<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 00:10:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2, Trace overlaps while constructing baseline</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) 00:10:00</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">
FF202606103020010009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.178" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.590" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="5.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="377.060" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="334.419" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="307.643" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.435" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.569" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.850" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.145" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="48.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.140" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="60">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 347.500 350.000 350.000 350.000 350.000 350.000 345.000 360.000 355.000 350.000 340.000 335.000 335.000 335.000 330.000 330.000 327.500 325.000 320.000 325.000 330.000 330.000 333.333 336.667 340.000 350.000 350.000 350.000 355.000 360.000 359.722 359.444 359.167 358.889 358.611 358.333 358.056 357.778 357.500 357.222 356.944 356.667 356.389 356.111 355.833 355.556 355.278 355.000 356.667 358.333 360.000 365.000 365.000 365.000 365.880 367.303 370.000 377.060 443.934
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 54 0 48 0 57 54 0 0 60 60 63 0 63 57 57 0 54 48 51 54 48 0 0 57 54 57 57 0 57 54 60 57 0 0 51 57 0 54 51 0 51 0 0 54 0 54 57 0 0 51 57 51 0 51 0 54 0 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 -1.953125 0.390625 0.390625 0.390625 -2.734375 0.390625 1.171875 0.390625 0.390625 0.390625 1.953125 0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875 1.171875 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 1.171875 -0.390625 2.734375 2.734375 -0.390625 1.171875 2.734375 -0.390625 0.390625 0.390625 0.390625 1.953125 -0.390625 -0.390625 -0.390625 -1.171875 2.734375 2.734375 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="103">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 145.883 150.0 155.0 160.0 165.0 170.0 175.0 180.0 181.766 185.0 190.0 195.0 200.0 205.0 210.0 215.0 217.649 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 334.419 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.332 0.314 0.29 0.256 0.21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.235 0.257 0.278 0.3 0.321 0.343 0.354 0.386 0.485 0.632 0.804 0.98 1.157 1.335 1.517 1.705 1.9 2.105 2.32 2.548 2.791 3.051 3.33 3.631 3.955 4.305 4.679 5.069 5.448 5.747 5.85 5.85 5.809 5.71 5.564 5.382 5.173 4.945 4.705 4.459 4.211 3.966 3.725 3.492 3.267 3.051 2.846 2.652 2.469 2.296 2.134 1.982 1.84 1.707 1.583 1.468 1.361 1.261 1.169 1.083 1.003 0.929 0.86 0.796 0.737 0.682 0.632 0.585 0.541 0.501 0.464 0.429 0.397 0.368 0.34 0.315 0.291 0.27 0.249 0.231 0.214

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="5.85" PeakHeight="334.419" Num="5" zHalfNm="307.643" Error="3.734">
-99.304 -28.525 14.854 -2.633 -1.162
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="107.649" Depth="0.154"/>
<TopsideChapman PeakHeight="334.419" PeakDensity="424596.78" PeakScaleHeight="20.145" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
