<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 18:30:00.000"
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) 18:30:00</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">
FF202630511011830009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.729" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.436" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.773" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="329.761" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="235.497" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.889" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="128.176" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.355" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="67.723" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="144.950" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="65">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 355.000 355.000 357.143 359.286 361.429 363.571 365.714 367.857 370.000 370.000 370.000 372.500 375.000 375.000 375.000 375.000 375.000 377.500 380.000 380.000 380.000 380.000 380.000 380.000 382.500 385.000 390.000 390.000 395.000 395.000 395.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 430.000 430.000 435.000 435.000 435.000 445.000 450.000 455.000 455.000 460.000 465.000 470.000 475.000 480.000 490.000 500.000 505.000 510.000 519.843 531.080 544.029 559.114
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 60 0 0 0 0 0 0 60 66 66 51 60 60 0 66 0 0 66 66 66 0 57 48 0 60 66 66 63 0 63 63 63 60 63 60 63 57 60 57 57 54 54 63 57 63 63 57 51 54 60 57 60 60 57 51 57 51 54 45 48 51 45 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 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 2.734375
</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" >
89.586 90.0 95.0 100.0 105.0 110.0 114.258 115.0 118.517 120.0 122.775 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 329.761 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.863 2.401 2.683 2.773 2.651 2.651 2.651 2.693 2.773 2.864 3.069 3.279 3.499 3.73 3.974 4.23 4.497 4.775 5.06 5.349 5.641 5.932 6.221 6.507 6.789 7.066 7.338 7.607 7.87 8.13 8.385 8.637 8.886 9.131 9.373 9.612 9.848 10.082 10.312 10.539 10.761 10.979 11.19 11.394 11.587 11.765 11.925 12.061 12.164 12.229 12.25 12.25 12.243 12.224 12.192 12.15 12.097 12.034 11.962 11.881 11.792 11.696 11.592 11.482 11.366 11.245 11.119 10.988 10.854 10.716 10.574 10.431 10.284 10.136 9.986 9.834 9.682 9.528 9.374 9.22 9.065 8.911 8.757 8.603 8.451 8.298 8.147 7.997 7.848 7.701 7.554 7.41 7.266 7.125 6.985 6.847 6.71 6.576 6.443 6.312 6.184 6.057 5.932 5.809 5.688 5.569 5.452 5.337 5.225 5.114 5.005 4.898 4.793 4.69 4.589 4.49 4.392 4.297 4.204 4.112 4.022 3.934 3.848 3.763 3.68 3.599 3.52 3.442 3.366 3.291 3.218 3.146 3.076 3.008 2.941 2.875 2.811 2.748 2.686 2.626 2.567 2.51 2.453 2.398 2.344 2.291 2.24 2.189 2.14 2.092 2.044 1.998 1.953 1.909 1.866 1.824 1.782 1.742 1.703 1.664 1.626 1.589 1.553 1.518 1.484 1.45 1.417 1.385 1.354 1.323 1.293 1.263 1.235 1.207 1.179 1.152 1.126 1.101 1.076 1.051 1.027 1.004 0.981 0.959 0.937 0.916

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.773" PeakHeight="110.0" Num="3" Error="0.0">
-29.992 12.408 -2.83
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.773" EndFrequency="12.25" PeakHeight="329.761" Num="5" zHalfNm="235.497" Error="2.434">
-192.359 -25.435 16.826 -7.957 1.939
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.775" Depth="0.122"/>
<TopsideChapman PeakHeight="329.761" PeakDensity="1861817.6" PeakScaleHeight="67.723" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
