<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 19:20:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o 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" >
2026.10.30 (303) 19:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202630310301920009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.499" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.239" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="410.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="410.000" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="2.405" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="386.869" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="265.069" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.442" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="168.699" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.576" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.184" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.090" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.870" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="50">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
410.000 411.250 412.500 413.750 415.000 415.000 417.500 420.000 422.500 425.000 425.000 430.000 430.000 430.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 460.000 460.000 465.000 470.000 475.000 475.000 480.000 485.000 492.500 496.820 501.448 506.417 511.768 517.545 523.802 530.601 538.016 546.135 555.061 564.924 575.877 588.112 601.869 617.450 635.244 655.758 679.667 707.891
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 60 66 54 63 66 63 54 60 54 63 57 63 60 60 63 63 63 60 60 0 60 0 57 60 0 0 54 0 0 0 0 0 0 0 0 0 45 0 0 45 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -1.171875 -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 2.734375 -0.390625 2.734375 -1.171875 2.734375 0.390625 -2.734375 1.171875 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 2.734375 -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" >
89.66 90.0 95.0 100.0 105.0 110.0 115.0 116.062 120.0 122.125 125.0 128.187 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 386.869 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.614 2.082 2.327 2.405 2.32 2.279 2.279 2.279 2.339 2.405 2.458 2.605 2.755 2.909 3.066 3.23 3.399 3.574 3.754 3.941 4.134 4.331 4.533 4.74 4.949 5.161 5.375 5.59 5.806 6.022 6.237 6.452 6.665 6.877 7.087 7.295 7.501 7.705 7.905 8.103 8.298 8.489 8.677 8.861 9.041 9.216 9.386 9.551 9.71 9.862 10.007 10.144 10.272 10.391 10.5 10.597 10.682 10.754 10.813 10.856 10.885 10.899 10.9 10.899 10.892 10.878 10.859 10.834 10.803 10.768 10.727 10.681 10.631 10.577 10.518 10.456 10.39 10.321 10.248 10.172 10.094 10.012 9.929 9.843 9.755 9.665 9.573 9.479 9.384 9.288 9.19 9.092 8.992 8.892 8.791 8.689 8.587 8.484 8.381 8.278 8.175 8.072 7.969 7.866 7.763 7.661 7.558 7.456 7.355 7.254 7.154 7.054 6.954 6.856 6.758 6.661 6.565 6.469 6.374 6.28 6.187 6.095 6.004 5.913 5.824 5.735 5.648 5.561 5.476 5.391 5.307 5.225 5.143 5.062 4.983 4.904 4.827 4.75 4.674 4.6 4.526 4.454 4.382 4.311 4.242 4.173 4.105 4.039 3.973 3.908 3.844 3.781 3.719 3.658 3.598 3.539 3.48 3.423 3.366 3.31 3.256 3.201 3.148 3.096 3.044 2.993 2.943 2.894 2.846 2.798 2.751 2.705 2.66 2.615 2.571 2.528 2.485 2.443 2.402 2.362 2.322 2.283 2.244 2.206 2.169 2.132

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.405" PeakHeight="110.0" Num="3" Error="0.0">
-29.606 11.858 -2.592
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.405" EndFrequency="10.9" PeakHeight="386.869" Num="5" zHalfNm="265.069" Error="2.188">
-252.638 -10.555 7.095 -3.75 1.166
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.187" Depth="0.126"/>
<TopsideChapman PeakHeight="386.869" PeakDensity="1474069.5" PeakScaleHeight="90.184" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
