<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 02:00:00.000"
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="14.0">
<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 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Severe F-spread, F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</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" >
2026.11.03 (307) 02:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630711030200009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="5.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.879" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.829" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="84" Val="12.500" Name="QF" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.600" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="420.363" 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="2.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="359.732" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="314.944" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.670" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="65.618" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.694" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="32.926" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="68.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="57">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 305.000 305.000 305.000 305.000 310.000 312.500 315.000 315.000 325.000 315.000 320.000 323.571 327.143 330.714 334.286 337.857 341.429 345.000 360.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 370.000 370.000 375.000 377.500 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 385.000 385.833 387.147 388.598 390.208 392.004 394.022 396.304 398.907 401.902 405.387 409.491 414.396 420.363 427.776 437.235 449.723 466.970
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 54 63 60 69 63 0 69 60 66 63 0 0 57 0 0 57 54 0 66 66 66 63 66 0 66 63 60 0 63 0 54 0 0 0 0 60 63 0 63 0 57 0 63 0 60 54 57 0 0 57 63 0 63 60 57
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.171875 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875 0.390625 0.390625 0.390625 1.171875 0.390625 1.171875 0.390625 0.390625 0.390625 2.734375 1.171875 1.171875 1.953125 1.953125 1.953125 2.734375 1.953125 1.953125 2.734375 1.953125 1.171875 1.171875 1.953125 1.953125 2.734375 1.953125 2.734375 -1.171875 1.953125 1.953125 2.734375 1.953125 2.734375 2.734375 1.953125 2.734375 2.734375 2.734375 2.734375 2.734375 1.171875 2.734375 2.734375 -0.390625 1.953125 2.734375 2.734375 2.734375 2.734375 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="137">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 147.351 150.0 155.0 160.0 165.0 170.0 175.0 180.0 184.703 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 222.054 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.732 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0
</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 0.318 0.295 0.265 0.224 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.201 0.222 0.242 0.263 0.284 0.304 0.325 0.346 0.354 0.408 0.494 0.586 0.69 0.81 0.949 1.108 1.285 1.477 1.68 1.89 2.105 2.321 2.54 2.759 2.98 3.201 3.422 3.644 3.865 4.085 4.301 4.51 4.707 4.883 5.025 5.119 5.15 5.15 5.138 5.104 5.053 4.984 4.902 4.808 4.703 4.591 4.471 4.346 4.218 4.087 3.954 3.82 3.687 3.555 3.423 3.294 3.167 3.043 2.922 2.803 2.688 2.577 2.469 2.364 2.263 2.166 2.072 1.982 1.895 1.811 1.731 1.654 1.58 1.509 1.442 1.377 1.314 1.255 1.198 1.144 1.091 1.042 0.994 0.949 0.905 0.864 0.824 0.786 0.75 0.715 0.683 0.651 0.621 0.592 0.565 0.539 0.514 0.49 0.468 0.446 0.426 0.406 0.387 0.369 0.352 0.336 0.32 0.305 0.291 0.278 0.265 0.253 0.241 0.23 0.219 0.209

</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="5.15" PeakHeight="359.732" Num="5" zHalfNm="314.944" Error="4.311">
-130.567 -13.843 10.049 -5.345 2.028
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="112.054" Depth="0.154"/>
<TopsideChapman PeakHeight="359.732" PeakDensity="329063.28" PeakScaleHeight="32.926" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
