<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 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" >
2026.10.23 (296) 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">
FF202629610231730009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.537" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.320" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="455.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="455.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.080" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.213" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="354.551" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.215" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.990" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.501" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="62.953" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.052" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="173.890" 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="33">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
455.000 457.500 460.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 475.000 480.000 485.000 485.000 485.000 495.000 495.000 500.000 500.000 505.000 510.000 515.000 525.000 530.000 535.000 545.000 550.000 560.000 570.000 580.000 595.000 611.120 630.437
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 54 60 0 0 0 0 0 51 0 0 0 0 0 0 0 0 0 0 60 0 60 60 60 57 0 57 0 57 0 0 0 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
</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" >
89.532 90.0 95.0 100.0 105.0 110.0 112.862 115.0 115.725 118.587 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 354.551 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.071 2.666 2.98 3.08 2.958 2.958 2.958 3.08 3.136 3.325 3.508 3.692 3.88 4.073 4.274 4.483 4.701 4.928 5.162 5.403 5.649 5.897 6.147 6.397 6.644 6.889 7.129 7.366 7.598 7.826 8.05 8.269 8.483 8.694 8.901 9.104 9.304 9.501 9.693 9.883 10.069 10.252 10.431 10.606 10.776 10.941 11.101 11.253 11.396 11.529 11.648 11.752 11.838 11.901 11.939 11.95 11.95 11.945 11.932 11.911 11.883 11.848 11.805 11.757 11.702 11.641 11.575 11.504 11.428 11.347 11.262 11.172 11.08 10.983 10.884 10.781 10.676 10.568 10.458 10.346 10.232 10.117 10.0 9.881 9.762 9.642 9.521 9.399 9.277 9.154 9.032 8.909 8.786 8.663 8.541 8.419 8.297 8.176 8.055 7.935 7.815 7.697 7.579 7.462 7.346 7.231 7.117 7.004 6.892 6.781 6.671 6.563 6.455 6.349 6.244 6.141 6.038 5.937 5.837 5.739 5.641 5.545 5.451 5.357 5.265 5.175 5.085 4.997 4.91 4.824 4.74 4.657 4.575 4.495 4.415 4.337 4.261 4.185 4.111 4.037 3.965 3.894 3.825 3.756 3.689 3.622 3.557 3.493 3.43 3.368 3.307 3.247 3.188 3.13 3.074 3.018 2.963 2.909 2.856 2.804 2.752 2.702 2.653 2.604 2.556 2.51 2.464 2.418 2.374 2.33 2.288 2.245 2.204 2.164 2.124 2.085 2.046 2.008 1.971 1.935 1.899 1.864 1.83 1.796 1.763 1.73

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.08" PeakHeight="110.0" Num="3" Error="0.0">
-30.261 12.799 -3.006
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.08" EndFrequency="11.95" PeakHeight="354.551" Num="5" zHalfNm="239.215" Error="4.33">
-222.054 -23.909 15.645 -8.356 2.71
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.587" Depth="0.122"/>
<TopsideChapman PeakHeight="354.551" PeakDensity="1771743.1" PeakScaleHeight="83.052" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
