<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 21:10:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, 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" >
2026.11.02 (306) 21:10:00</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">
FF202630611022110009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="10.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.311" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.569" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="3.450" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="475.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="475.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="100.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="555.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.642" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="462.206" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="367.549" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.025" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.400" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="137.633" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="38.859" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.811" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="138.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.950" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="37">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
475.000 480.000 485.000 490.000 495.000 500.000 510.000 505.000 510.000 510.000 515.000 521.667 528.333 535.000 535.000 540.000 545.000 550.000 552.500 555.000 560.000 570.000 570.000 575.294 580.588 585.882 591.176 596.471 601.765 607.059 612.353 622.290 633.259 645.431 659.014 674.269 691.525
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 69 0 63 0 78 69 0 63 0 0 0 66 66 69 69 0 63 0 57 60 0 0 0 0 0 0 0 57 60 60 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.171875 -2.734375 -2.734375 -1.953125 2.734375 2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 -2.734375
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="22">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
100.000 100.000 102.500 105.000 110.000 108.333 106.667 105.000 105.000 105.000 115.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 105.000 100.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 69 0 69 63 0 0 60 0 66 57 63 0 57 0 0 57 57 0 0 57 0
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.947 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 135.906 140.0 145.0 150.0 155.0 160.0 161.812 165.0 170.0 175.0 180.0 185.0 187.718 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 462.206 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.426 0.556 0.622 0.642 0.633 0.604 0.554 0.475 0.345 0.311 0.311 0.311 0.311 0.311 0.311 0.311 0.352 0.416 0.48 0.543 0.607 0.642 0.679 0.759 0.841 0.925 1.014 1.108 1.207 1.313 1.427 1.548 1.676 1.814 1.96 2.115 2.279 2.452 2.633 2.823 3.021 3.226 3.439 3.658 3.883 4.113 4.348 4.587 4.83 5.076 5.324 5.574 5.826 6.079 6.332 6.585 6.836 7.086 7.333 7.578 7.818 8.053 8.282 8.505 8.719 8.924 9.118 9.3 9.47 9.624 9.763 9.885 9.988 10.072 10.135 10.177 10.198 10.2 10.198 10.188 10.169 10.14 10.104 10.059 10.007 9.948 9.883 9.811 9.734 9.652 9.564 9.472 9.376 9.276 9.173 9.066 8.957 8.845 8.731 8.616 8.498 8.379 8.259 8.138 8.016 7.894 7.771 7.648 7.525 7.403 7.28 7.158 7.036 6.915 6.794 6.675 6.556 6.438 6.321 6.206 6.091 5.978 5.866 5.755 5.646 5.538 5.432 5.327 5.223 5.121 5.02 4.921 4.823 4.727 4.633 4.54 4.448 4.358 4.27 4.183 4.097 4.013 3.931 3.85 3.771 3.692 3.616 3.541 3.467 3.394 3.323 3.254 3.185 3.118 3.053 2.988 2.925 2.863 2.802 2.743 2.685 2.628 2.572 2.517 2.463 2.411 2.359 2.309 2.259 2.211 2.163 2.117 2.071 2.027 1.983 1.94 1.899 1.858 1.818 1.778 1.74 1.703 1.666 1.63 1.594 1.56

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.642" PeakHeight="110.0" Num="3" Error="0.0">
-24.119 5.723 -0.657
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.642" EndFrequency="10.2" PeakHeight="462.206" Num="5" zHalfNm="367.549" Error="2.997">
-270.907 -7.786 5.304 -2.631 1.532
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="77.718" Depth="0.331"/>
<TopsideChapman PeakHeight="462.206" PeakDensity="1290818.9" PeakScaleHeight="70.811" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
