<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 17:00:00.000"
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) 17:00:00</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">
FF202629710241700009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.639" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.789" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="460.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="460.000" 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="9.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="460.000" 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="3.184" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.264" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="321.374" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="212.311" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.799" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="144.048" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.673" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="78.214" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="164.760" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
460.000 460.000 460.000 470.000 470.000 475.000 480.000 485.000 490.000 495.000 501.568 509.065 517.705 527.770 539.645 553.866 571.204
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 63 60 54 60 60 57 57 54 54 0 0 54 0 51 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 -1.171875 1.953125
</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" >
89.515 90.0 95.0 100.0 105.0 110.0 112.41 114.821 115.0 117.231 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 321.374 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.141 2.756 3.08 3.184 3.062 3.062 3.071 3.184 3.295 3.483 3.666 3.85 4.038 4.233 4.435 4.646 4.864 5.089 5.318 5.549 5.781 6.01 6.235 6.456 6.671 6.881 7.085 7.283 7.476 7.664 7.847 8.026 8.201 8.371 8.537 8.7 8.858 9.013 9.163 9.308 9.448 9.581 9.707 9.822 9.925 10.013 10.082 10.128 10.149 10.15 10.148 10.138 10.121 10.097 10.065 10.028 9.984 9.934 9.878 9.818 9.752 9.682 9.607 9.529 9.447 9.361 9.272 9.181 9.086 8.99 8.891 8.79 8.687 8.583 8.477 8.37 8.262 8.154 8.044 7.934 7.824 7.713 7.602 7.492 7.381 7.27 7.16 7.05 6.941 6.832 6.724 6.616 6.509 6.403 6.298 6.194 6.091 5.988 5.887 5.787 5.687 5.589 5.492 5.396 5.302 5.208 5.116 5.025 4.935 4.847 4.76 4.674 4.589 4.505 4.423 4.342 4.262 4.183 4.106 4.03 3.955 3.881 3.809 3.737 3.667 3.598 3.53 3.464 3.398 3.334 3.27 3.208 3.147 3.087 3.028 2.97 2.913 2.857 2.803 2.749 2.696 2.644 2.593 2.543 2.494 2.445 2.398 2.352 2.306 2.261 2.217 2.174 2.132 2.09 2.05 2.01 1.971 1.932 1.894 1.857 1.821 1.786 1.751 1.716 1.683 1.65 1.618 1.586 1.555 1.524 1.494 1.465 1.436 1.408 1.38 1.353 1.327 1.301 1.275 1.25 1.225 1.201 1.178 1.154 1.132 1.109

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.184" PeakHeight="110.0" Num="3" Error="0.0">
-30.345 12.922 -3.062
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.184" EndFrequency="10.15" PeakHeight="321.374" Num="5" zHalfNm="212.311" Error="4.919">
-191.701 -21.188 13.594 -7.28 2.432
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.231" Depth="0.122"/>
<TopsideChapman PeakHeight="321.374" PeakDensity="1278194.8" PeakScaleHeight="78.214" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
