<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 16:20:00.000"
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) 16:20:00</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">
FF202630511011620009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.456" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.492" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="415.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="415.000" 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="490.000" 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="3.279" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.309" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="382.919" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.992" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.327" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="179.819" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="69.562" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="97.694" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="204.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.650" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="62">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 11.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
415.000 415.000 415.000 420.000 420.000 420.000 423.333 426.667 430.000 430.000 430.000 435.000 435.000 435.000 440.000 440.000 445.000 445.000 445.000 445.000 450.000 450.000 455.000 455.000 455.000 465.000 465.000 465.000 465.000 470.000 470.000 472.500 475.000 480.000 480.000 485.000 485.000 490.000 490.000 495.000 500.000 505.000 510.000 510.000 515.000 520.000 525.000 530.000 535.000 545.000 550.000 555.000 565.000 575.000 585.000 595.000 610.000 625.000 645.000 670.000 705.000 748.161
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 45 0 0 66 51 0 66 54 60 48 54 60 51 57 45 57 60 60 45 57 60 60 60 57 57 57 54 54 54 57 57 57 60 57 54 51 54 57 54 54 54 51 48 51 45 48 48 45 48 45 45 48 45 42 39
</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 -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
</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" >
89.5 90.0 95.0 100.0 105.0 110.0 112.01 114.02 115.0 116.03 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 382.919 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.206 2.838 3.172 3.279 3.157 3.157 3.216 3.279 3.398 3.554 3.718 3.888 4.064 4.246 4.433 4.623 4.817 5.012 5.208 5.406 5.603 5.799 5.995 6.19 6.384 6.576 6.767 6.957 7.145 7.331 7.515 7.698 7.88 8.06 8.238 8.415 8.59 8.764 8.935 9.105 9.274 9.44 9.604 9.765 9.924 10.08 10.232 10.381 10.525 10.665 10.799 10.926 11.046 11.158 11.259 11.35 11.429 11.494 11.544 11.579 11.597 11.6 11.599 11.594 11.583 11.567 11.545 11.518 11.486 11.45 11.409 11.364 11.315 11.261 11.204 11.144 11.08 11.013 10.943 10.87 10.795 10.716 10.636 10.553 10.469 10.382 10.294 10.204 10.112 10.019 9.925 9.83 9.733 9.636 9.538 9.439 9.34 9.24 9.139 9.039 8.938 8.836 8.735 8.634 8.532 8.431 8.33 8.229 8.128 8.028 7.928 7.828 7.729 7.63 7.532 7.434 7.337 7.241 7.145 7.05 6.956 6.862 6.769 6.677 6.585 6.495 6.405 6.316 6.228 6.14 6.054 5.968 5.884 5.8 5.717 5.635 5.554 5.474 5.395 5.316 5.239 5.162 5.087 5.012 4.938 4.866 4.794 4.722 4.652 4.583 4.515 4.447 4.381 4.315 4.25 4.186 4.123 4.061 3.999 3.938 3.879 3.82 3.762 3.704 3.648 3.592 3.537 3.483 3.429 3.377 3.325 3.274 3.223 3.174 3.125 3.076 3.029 2.982 2.936 2.89 2.846 2.801 2.758 2.715 2.673 2.631

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.279" PeakHeight="110.0" Num="3" Error="0.0">
-30.419 13.03 -3.111
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.279" EndFrequency="11.6" PeakHeight="382.919" Num="5" zHalfNm="248.992" Error="2.049">
-252.605 -24.177 14.581 -5.279 0.591
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.03" Depth="0.122"/>
<TopsideChapman PeakHeight="382.919" PeakDensity="1669478.9" PeakScaleHeight="97.694" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
