<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-28 -301 17:30:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.10.28 (301) 17:30:00</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">
FF202630110281730009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.515" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.146" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="470.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="470.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="486.250" 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="3.073" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.210" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="360.963" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="228.921" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.990" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="177.101" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.954" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="96.860" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="195.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.810" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
470.000 471.667 473.333 475.000 478.750 482.500 486.250 490.000 495.000 500.000 505.000 515.000 520.000 530.000 535.000 550.000 562.717 577.377 594.465 614.636 638.808 668.302 705.095
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 54 0 0 0 63 63 63 63 63 57 0 63 63 0 60 0 0 0 0 51
</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 -1.171875 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" >
89.533 90.0 95.0 100.0 105.0 110.0 112.892 115.0 115.784 118.676 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 360.963 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.066 2.66 2.973 3.073 2.951 2.951 2.951 3.073 3.113 3.263 3.412 3.562 3.715 3.871 4.031 4.195 4.363 4.534 4.709 4.887 5.066 5.247 5.428 5.608 5.788 5.966 6.143 6.317 6.489 6.658 6.824 6.987 7.147 7.304 7.458 7.609 7.756 7.9 8.041 8.178 8.312 8.441 8.567 8.687 8.804 8.914 9.019 9.118 9.21 9.294 9.369 9.435 9.491 9.536 9.57 9.591 9.6 9.6 9.598 9.592 9.581 9.565 9.545 9.521 9.493 9.461 9.425 9.386 9.343 9.297 9.248 9.196 9.141 9.084 9.024 8.962 8.898 8.832 8.763 8.693 8.622 8.549 8.474 8.398 8.321 8.243 8.163 8.083 8.002 7.921 7.838 7.756 7.672 7.589 7.505 7.42 7.336 7.251 7.167 7.082 6.998 6.913 6.829 6.745 6.661 6.577 6.494 6.411 6.329 6.247 6.165 6.084 6.003 5.923 5.844 5.765 5.687 5.609 5.532 5.456 5.38 5.305 5.231 5.157 5.084 5.012 4.941 4.87 4.8 4.731 4.662 4.595 4.528 4.462 4.396 4.332 4.268 4.205 4.143 4.081 4.02 3.96 3.901 3.843 3.785 3.728 3.672 3.616 3.562 3.508 3.454 3.402 3.35 3.299 3.248 3.198 3.149 3.101 3.053 3.006 2.96 2.914 2.869 2.825 2.781 2.738 2.696 2.654 2.612 2.572 2.532 2.492 2.453 2.415 2.377 2.34 2.303 2.267 2.232 2.197 2.162 2.128 2.095 2.062 2.03 1.998

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.073" PeakHeight="110.0" Num="3" Error="0.0">
-30.256 12.791 -3.002
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.073" EndFrequency="9.6" PeakHeight="360.963" Num="5" zHalfNm="228.921" Error="2.531">
-234.584 -13.107 8.396 -4.344 1.352
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.676" Depth="0.122"/>
<TopsideChapman PeakHeight="360.963" PeakDensity="1143424.4" PeakScaleHeight="96.86" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
