<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 19:40:00.000"
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="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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: 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" >
2026.11.01 (305) 19:40:00</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">
FF202630511011940009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.463" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.448" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.900" 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="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="10.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="2.204" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="395.748" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="279.724" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.698" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="161.356" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.259" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.006" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.780" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.740" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="56">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
425.000 425.000 426.667 428.333 430.000 435.000 435.000 435.000 437.500 440.000 440.000 445.000 445.000 445.000 445.000 450.000 450.000 455.000 455.000 465.000 465.000 467.500 470.000 470.000 470.000 475.000 475.000 480.000 480.000 480.000 490.000 490.000 495.000 495.000 495.000 505.000 510.000 515.000 515.000 520.000 525.000 530.000 535.000 545.000 550.000 560.000 565.000 575.000 585.000 590.000 605.000 618.211 633.047 649.830 668.968 690.995
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 57 0 69 0 63 69 0 0 69 69 69 69 66 63 48 60 51 60 66 66 66 63 63 63 0 57 60 57 60 60 57 54 54 60 60 60 60 57 60 57 54 54 54 54 54 54 51 48 48 48 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.706 90.0 95.0 100.0 105.0 110.0 115.0 117.109 120.0 124.217 125.0 130.0 131.326 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 395.748 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.225 1.478 1.909 2.133 2.204 2.141 2.075 2.075 2.075 2.089 2.18 2.204 2.311 2.457 2.605 2.758 2.916 3.081 3.252 3.432 3.618 3.812 4.013 4.221 4.434 4.651 4.872 5.096 5.321 5.547 5.774 6.0 6.225 6.45 6.672 6.893 7.112 7.33 7.545 7.758 7.97 8.179 8.385 8.59 8.792 8.991 9.188 9.382 9.573 9.76 9.943 10.121 10.294 10.462 10.622 10.775 10.919 11.052 11.173 11.28 11.371 11.445 11.501 11.536 11.55 11.55 11.547 11.537 11.519 11.495 11.464 11.426 11.383 11.333 11.278 11.218 11.153 11.083 11.009 10.931 10.849 10.763 10.674 10.582 10.487 10.39 10.289 10.187 10.083 9.976 9.869 9.759 9.649 9.537 9.424 9.31 9.196 9.081 8.966 8.85 8.734 8.618 8.502 8.386 8.271 8.155 8.04 7.925 7.811 7.698 7.585 7.473 7.361 7.25 7.14 7.031 6.923 6.816 6.71 6.605 6.501 6.398 6.296 6.195 6.095 5.997 5.899 5.803 5.708 5.614 5.521 5.43 5.339 5.25 5.162 5.075 4.99 4.906 4.822 4.74 4.66 4.58 4.502 4.424 4.348 4.273 4.2 4.127 4.055 3.985 3.916 3.847 3.78 3.714 3.649 3.585 3.522 3.46 3.399 3.339 3.28 3.222 3.165 3.109 3.054 3.0 2.947 2.894 2.843 2.792 2.742 2.693 2.645 2.598 2.552 2.506 2.461 2.417 2.374 2.331 2.289 2.248 2.208 2.168 2.129 2.091 2.053

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.204" PeakHeight="110.0" Num="3" Error="0.0">
-29.359 11.513 -2.448
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.204" EndFrequency="11.55" PeakHeight="395.748" Num="5" zHalfNm="279.724" Error="2.593">
-252.901 -20.026 13.342 -6.806 1.969
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="21.326" Depth="0.129"/>
<TopsideChapman PeakHeight="395.748" PeakDensity="1655117.9" PeakScaleHeight="85.006" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
