<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-14 -045 01:40:00.000"
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 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, Unidentified traces above foF2</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" >
2026.02.14 (045) 01:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.14" 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">
FF202604502140140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.374" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.921" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="270.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="270.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="337.475" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="320.746" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="306.398" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.807" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="22.690" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.762" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.897" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="163">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.25 2.3 2.35 2.4 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 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
270.000 270.000 270.000 270.000 270.000 270.000 275.000 276.667 278.333 280.000 285.000 290.000 295.000 293.333 291.667 290.000 305.000 330.000 335.000 333.333 331.667 330.000 328.333 326.667 325.000 323.333 321.667 320.000 318.333 316.667 315.000 313.333 311.667 310.000 308.333 306.667 305.000 303.333 301.667 300.000 302.500 305.000 305.000 307.500 310.000 310.000 315.000 315.000 315.000 317.500 320.000 318.750 317.500 316.250 315.000 315.000 315.000 310.000 305.000 305.000 305.000 305.000 305.357 305.714 306.071 306.429 306.786 307.143 307.500 307.857 308.214 308.571 308.929 309.286 309.643 310.000 315.000 320.000 325.000 327.500 330.000 330.000 330.000 332.500 335.000 337.500 340.000 340.000 335.000 334.706 334.412 334.118 333.824 333.529 333.235 332.941 332.647 332.353 332.059 331.765 331.471 331.176 330.882 330.588 330.294 330.000 335.000 335.000 340.000 337.500 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 335.000 340.000 340.000 340.000 340.000 340.000 342.500 345.000 345.000 350.000 355.000 335.000 330.000 345.000 340.000 350.000 340.000 340.000 335.000 335.000 333.333 331.667 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 331.095 332.540 334.537 337.475 342.226 351.213 374.665
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 57 54 54 54 54 60 0 0 60 51 0 60 0 57 54 66 63 60 0 0 0 57 0 0 66 69 0 0 0 0 57 60 0 0 0 0 0 0 60 0 66 69 0 66 69 63 60 63 0 57 0 0 0 60 0 0 60 60 0 0 0 0 0 57 0 0 0 0 54 0 0 0 0 0 54 0 54 51 0 60 60 57 60 60 0 63 63 63 0 54 60 60 57 60 63 0 0 51 60 0 0 0 0 0 54 57 57 66 66 60 63 66 0 63 57 63 63 60 66 63 63 66 63 51 63 0 54 57 63 63 63 66 66 57 57 63 63 60 60 57 57 60 57 0 0 57 0 0 0 57 57 54 51 0 57 54 54 0 0 54 45 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 -0.390625 1.953125 -0.390625 -0.390625 -1.171875 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 1.171875 1.171875 1.171875 -0.390625 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 1.953125 -0.390625 0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -0.390625 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.953125 2.734375 1.953125 -1.953125 2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -1.171875 2.734375 -2.734375 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 2.734375 -1.953125 -1.953125 -0.390625 -2.734375 -2.734375 0.390625 -1.953125 -2.734375 -1.953125 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -2.734375 -0.390625 1.171875 -2.734375 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 1.953125 -0.390625 -1.171875 -2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="82">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 147.091 150.0 155.0 160.0 165.0 170.0 175.0 180.0 184.182 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 221.273 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 320.746 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0
</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 0.334 0.317 0.294 0.264 0.222 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.203 0.224 0.245 0.266 0.286 0.307 0.328 0.349 0.354 0.493 0.683 0.882 1.094 1.322 1.569 1.84 2.136 2.463 2.825 3.227 3.677 4.182 4.755 5.408 6.163 7.045 8.088 9.306 10.323 10.35 10.209 9.753 9.093 8.324 7.516 6.717 5.957 5.252 4.611 4.034 3.521 3.068 2.669 2.32 2.015 1.749 1.517 1.316 1.141 0.989 0.857 0.743 0.644 0.558 0.483 0.419 0.363 0.315 0.273 0.236 0.205

</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="10.35" PeakHeight="320.746" Num="5" zHalfNm="306.398" Error="3.171">
-76.773 -35.67 14.074 -0.809 -0.295
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="111.273" Depth="0.154"/>
<TopsideChapman PeakHeight="320.746" PeakDensity="1329063.2" PeakScaleHeight="10.897" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
