<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 13:40:00.000"
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 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" >
2026.10.24 (297) 13:40:00</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">
FF202629710241340009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.541" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.431" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="490.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="490.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="517.383" 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="3.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.344" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="338.478" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.446" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.318" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="159.887" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.754" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.143" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="182.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.660" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
490.000 491.840 493.872 496.126 498.642 501.467 504.663 508.308 512.503 517.383 523.130 530.000 538.355 548.737 561.984 579.472 603.625 639.154
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 54 0 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -0.390625 -0.390625 -0.390625 2.734375 -1.171875 -1.953125 1.953125 1.171875 -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" >
89.489 90.0 95.0 100.0 105.0 110.0 111.697 113.393 115.0 115.09 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 338.478 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.256 2.903 3.245 3.354 3.231 3.231 3.347 3.354 3.532 3.706 3.879 4.053 4.231 4.415 4.605 4.801 5.002 5.209 5.42 5.632 5.845 6.058 6.268 6.475 6.679 6.878 7.072 7.263 7.448 7.629 7.806 7.979 8.148 8.313 8.475 8.633 8.788 8.939 9.086 9.23 9.37 9.505 9.636 9.762 9.88 9.992 10.094 10.185 10.263 10.325 10.37 10.395 10.4 10.4 10.394 10.383 10.365 10.341 10.312 10.277 10.237 10.193 10.143 10.09 10.032 9.97 9.904 9.835 9.763 9.687 9.609 9.528 9.445 9.359 9.271 9.181 9.09 8.997 8.902 8.806 8.71 8.612 8.513 8.413 8.313 8.212 8.111 8.009 7.908 7.806 7.704 7.602 7.5 7.399 7.297 7.197 7.096 6.996 6.896 6.797 6.699 6.601 6.504 6.408 6.312 6.217 6.123 6.03 5.938 5.847 5.756 5.667 5.578 5.49 5.404 5.318 5.234 5.15 5.067 4.986 4.905 4.826 4.747 4.669 4.593 4.518 4.443 4.37 4.297 4.226 4.156 4.086 4.018 3.951 3.884 3.819 3.754 3.691 3.628 3.567 3.506 3.447 3.388 3.33 3.273 3.217 3.162 3.108 3.054 3.002 2.95 2.899 2.849 2.8 2.752 2.704 2.657 2.611 2.566 2.521 2.477 2.434 2.392 2.35 2.309 2.269 2.229 2.19 2.152 2.114 2.077 2.041 2.005 1.97 1.935 1.901 1.868 1.835 1.803 1.771 1.74 1.71 1.679 1.65 1.621 1.592

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.354" PeakHeight="110.0" Num="3" Error="0.0">
-30.475 13.113 -3.149
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.354" EndFrequency="10.4" PeakHeight="338.478" Num="5" zHalfNm="217.446" Error="4.467">
-210.793 -21.374 13.61 -7.124 2.293
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.09" Depth="0.123"/>
<TopsideChapman PeakHeight="338.478" PeakDensity="1341935.5" PeakScaleHeight="87.143" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
