<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 00:40:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, 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" >
2026.03.08 (067) 00:40:00</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">
FF202606703080040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.070" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.235" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="400.783" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="342.937" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="309.665" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.207" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="50.270" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="14.663" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="24.434" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="54.360" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.570" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="128">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.4 10.45 10.5
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 290.000 290.000 290.000 291.000 292.000 293.000 294.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 295.000 297.500 300.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 305.000 305.000 306.591 308.182 309.773 311.364 312.955 314.545 316.136 317.727 319.318 320.909 322.500 324.091 325.682 327.273 328.864 330.455 332.045 333.636 335.227 336.818 338.409 340.000 340.000 340.000 340.000 340.000 345.000 340.000 342.500 345.000 345.000 345.000 345.000 345.000 345.000 345.769 346.538 347.308 348.077 348.846 349.615 350.385 351.154 351.923 352.692 353.462 354.231 355.000 355.000 355.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 380.000 385.000 390.000 395.000 405.000 410.000 415.000 417.500 420.000 422.500 425.000 425.000 425.000 421.000 417.000 413.000 409.000 405.000 401.000 397.000 393.000 389.000 385.000 385.000 385.000 390.000 395.000 395.000 395.000 396.667 398.090 400.783 407.818
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 66 63 66 0 0 54 0 54 57 0 0 0 0 69 72 0 54 57 0 0 60 60 63 66 69 69 69 57 57 63 63 0 69 69 0 0 0 0 0 0 0 0 0 0 60 0 0 0 0 57 0 63 0 0 57 0 0 63 63 60 57 48 60 51 0 54 63 69 63 0 60 69 0 63 0 60 69 66 60 72 69 0 63 63 66 0 72 69 72 69 66 66 69 60 0 63 57 57 63 57 0 54 57 57 57 60 0 0 0 0 0 0 0 0 0 51 54 54 0 57 0 51 0 0 48 48
</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 -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 0.390625 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 -0.390625 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 0.390625 2.734375 2.734375 1.953125 1.953125 1.953125 2.734375 1.953125 1.953125 1.953125 1.171875 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 1.953125 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 2.734375 -0.390625 -1.171875 -1.171875 -2.734375 2.734375 1.953125 2.734375 2.734375 -1.171875 2.734375 2.734375 2.734375 2.734375 2.734375 1.953125 2.734375 2.734375 1.171875 1.953125 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="125">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.518 150.0 155.0 160.0 165.0 170.0 175.0 180.0 183.037 185.0 190.0 195.0 200.0 205.0 210.0 215.0 219.555 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 342.937 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0
</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 0.333 0.316 0.292 0.26 0.216 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.208 0.229 0.25 0.272 0.293 0.314 0.335 0.354 0.37 0.522 0.684 0.882 1.132 1.441 1.802 2.202 2.626 3.065 3.514 3.971 4.437 4.912 5.398 5.894 6.403 6.925 7.461 8.01 8.568 9.128 9.667 10.138 10.445 10.5 10.493 10.42 10.276 10.074 9.824 9.536 9.218 8.878 8.524 8.162 7.795 7.429 7.067 6.711 6.363 6.026 5.7 5.387 5.086 4.798 4.524 4.262 4.014 3.778 3.555 3.343 3.143 2.955 2.777 2.609 2.451 2.302 2.161 2.029 1.905 1.789 1.679 1.576 1.479 1.388 1.302 1.222 1.147 1.076 1.01 0.947 0.889 0.834 0.782 0.734 0.689 0.646 0.606 0.568 0.533 0.5 0.469 0.44 0.413 0.387 0.363 0.341 0.32 0.3 0.281 0.264 0.248 0.232 0.218 0.204

</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="10.5" PeakHeight="342.937" Num="5" zHalfNm="309.665" Error="4.528">
-116.508 -16.898 15.163 -7.659 2.52
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="109.555" Depth="0.154"/>
<TopsideChapman PeakHeight="342.937" PeakDensity="1367866.0" PeakScaleHeight="24.434" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
