<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 14:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.10.24 (297) 14:40:00</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">
FF202629710241440009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.490" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.891" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="505.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="505.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" 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="3.394" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.362" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="349.533" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="223.826" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.700" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="165.902" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.491" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.036" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="189.630" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.640" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
515.000 505.000 517.500 530.000 535.000 538.333 541.667 546.279 551.426 557.206 563.745 571.202 579.784 589.768 601.528 615.583 632.678
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 0 0 48 45 0 0 57 57 51 51 51 48 45 48 42 42
</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
</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" >
89.483 90.0 95.0 100.0 105.0 110.0 111.536 113.072 114.608 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 349.533 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.283 2.937 3.283 3.394 3.271 3.271 3.394 3.409 3.592 3.763 3.932 4.101 4.274 4.452 4.636 4.826 5.024 5.227 5.436 5.648 5.862 6.077 6.291 6.502 6.709 6.913 7.112 7.306 7.495 7.68 7.86 8.036 8.208 8.376 8.54 8.701 8.858 9.013 9.164 9.312 9.457 9.598 9.736 9.871 10.001 10.127 10.247 10.36 10.465 10.56 10.642 10.71 10.76 10.791 10.8 10.8 10.796 10.786 10.77 10.748 10.721 10.688 10.65 10.607 10.56 10.508 10.452 10.392 10.329 10.261 10.191 10.117 10.041 9.961 9.88 9.795 9.709 9.62 9.53 9.438 9.345 9.25 9.153 9.056 8.958 8.858 8.758 8.658 8.557 8.455 8.353 8.251 8.149 8.046 7.944 7.841 7.739 7.637 7.536 7.434 7.334 7.233 7.133 7.034 6.935 6.837 6.739 6.643 6.547 6.452 6.357 6.263 6.171 6.079 5.988 5.898 5.809 5.72 5.633 5.547 5.461 5.377 5.294 5.211 5.13 5.049 4.97 4.891 4.814 4.738 4.662 4.588 4.514 4.442 4.37 4.3 4.23 4.162 4.094 4.028 3.962 3.897 3.834 3.771 3.709 3.648 3.588 3.529 3.47 3.413 3.356 3.301 3.246 3.192 3.139 3.086 3.035 2.984 2.934 2.885 2.837 2.789 2.743 2.696 2.651 2.607 2.563 2.519 2.477 2.435 2.394 2.354 2.314 2.275 2.236 2.198 2.161 2.124 2.088 2.053 2.018 1.984 1.95 1.917 1.884 1.852

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.394" PeakHeight="110.0" Num="3" Error="0.0">
-30.503 13.155 -3.169
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.394" EndFrequency="10.8" PeakHeight="349.533" Num="5" zHalfNm="223.826" Error="6.138">
-220.415 -24.771 15.973 -8.665 2.953
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.608" Depth="0.123"/>
<TopsideChapman PeakHeight="349.533" PeakDensity="1447146.4" PeakScaleHeight="90.036" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
