<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 08:10:00.000"
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="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 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Moderate F-spread, F2x cusp not found, Multiple candidates for F2x 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" >
2026.11.02 (306) 08:10:00</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">
FF202630611020810009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="4.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.807" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.651" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.150" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="126.667" Name="h`Es" 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="4.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="441.667" 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="0.627" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="349.518" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="282.235" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.091" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="1.250" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="95.220" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.578" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.993" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="98.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.890" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="8">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
425.000 427.500 430.000 435.833 441.667 452.064 470.308 510.660
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 57 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 0.390625 1.171875 0.390625 1.171875 1.171875 1.171875
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.25 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2.0 2.05 2.1 2.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
110.000 112.143 114.286 116.429 118.571 120.714 122.857 125.000 126.429 127.857 129.286 130.714 132.143 133.571 135.000 135.000 133.333 131.667 130.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 0 0 0 0 0 57 0 0 0 0 0 0 63 60 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 0.390625 -0.390625 0.390625 -2.734375 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="169">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
91.0 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 136.137 140.0 145.0 150.0 155.0 160.0 162.275 165.0 170.0 175.0 180.0 185.0 188.412 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 349.518 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.416 0.543 0.607 0.627 0.618 0.591 0.542 0.466 0.341 0.299 0.299 0.299 0.299 0.299 0.299 0.299 0.333 0.396 0.459 0.521 0.584 0.627 0.652 0.732 0.816 0.905 1.0 1.103 1.213 1.332 1.457 1.588 1.725 1.866 2.009 2.153 2.299 2.444 2.588 2.731 2.872 3.011 3.146 3.278 3.406 3.528 3.643 3.751 3.85 3.937 4.012 4.072 4.116 4.142 4.15 4.15 4.145 4.133 4.114 4.088 4.056 4.019 3.977 3.93 3.879 3.825 3.768 3.707 3.645 3.58 3.514 3.446 3.377 3.307 3.237 3.167 3.096 3.025 2.954 2.884 2.814 2.745 2.676 2.608 2.541 2.475 2.41 2.346 2.283 2.221 2.161 2.101 2.043 1.986 1.93 1.876 1.823 1.771 1.72 1.671 1.622 1.575 1.529 1.485 1.441 1.399 1.357 1.317 1.278 1.24 1.203 1.167 1.133 1.099 1.066 1.034 1.003 0.972 0.943 0.915 0.887 0.86 0.834 0.809 0.784 0.76 0.737 0.715 0.693 0.672 0.651 0.632 0.612 0.594 0.575 0.558 0.541 0.524 0.508 0.493 0.478 0.463 0.449 0.435 0.422 0.409 0.396 0.384 0.372 0.361 0.35 0.339 0.329 0.319 0.309 0.299 0.29 0.281 0.273 0.264 0.256 0.248 0.241 0.233 0.226 0.219 0.212 0.206

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.627" PeakHeight="110.0" Num="3" Error="0.0">
-23.966 5.598 -0.632
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.627" EndFrequency="4.15" PeakHeight="349.518" Num="5" zHalfNm="282.235" Error="1.573">
-157.462 -6.279 4.066 -2.297 0.866
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="78.412" Depth="0.328"/>
<TopsideChapman PeakHeight="349.518" PeakDensity="213678.66" PeakScaleHeight="49.993" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
