<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 18:20:00.000"
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" >
2026.10.23 (296) 18:20:00</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">
FF202629610231820009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.630" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.686" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="420.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="420.000" 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="11.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="2.843" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="346.320" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.340" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.236" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="146.671" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.243" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="78.363" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="159.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.770" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="37">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
10.25 10.3 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 12.0 12.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
420.000 420.000 420.000 422.500 425.000 425.000 430.000 435.000 435.000 435.000 440.000 445.000 445.000 445.000 450.000 455.000 455.000 460.000 460.000 465.000 470.000 470.000 475.000 475.000 479.585 484.672 490.349 496.724 503.936 512.161 521.626 532.638 545.608 561.109 579.962 603.386 633.275
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51 45 0 54 57 0 57 54 0 57 57 54 0 0 0 0 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 1.171875 -2.734375 -2.734375 -0.390625 -1.171875 -2.734375 -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" >
89.573 90.0 95.0 100.0 105.0 110.0 113.933 115.0 117.867 120.0 121.8 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 346.32 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.911 2.461 2.751 2.843 2.721 2.721 2.721 2.787 2.843 2.967 3.159 3.353 3.551 3.757 3.97 4.193 4.424 4.664 4.913 5.168 5.429 5.694 5.961 6.229 6.498 6.765 7.03 7.292 7.551 7.807 8.06 8.308 8.553 8.793 9.03 9.263 9.491 9.714 9.933 10.147 10.356 10.558 10.753 10.941 11.119 11.288 11.445 11.588 11.716 11.826 11.917 11.985 12.03 12.049 12.05 12.047 12.036 12.015 11.987 11.949 11.905 11.852 11.793 11.728 11.656 11.578 11.495 11.407 11.314 11.217 11.116 11.01 10.902 10.79 10.675 10.558 10.439 10.317 10.193 10.068 9.942 9.814 9.685 9.556 9.425 9.295 9.164 9.032 8.901 8.77 8.639 8.508 8.378 8.248 8.119 7.991 7.863 7.737 7.611 7.486 7.363 7.24 7.119 6.999 6.88 6.762 6.646 6.531 6.417 6.305 6.194 6.085 5.977 5.87 5.765 5.661 5.559 5.459 5.359 5.262 5.165 5.071 4.977 4.885 4.795 4.706 4.619 4.532 4.448 4.364 4.283 4.202 4.123 4.045 3.969 3.893 3.819 3.747 3.676 3.605 3.537 3.469 3.403 3.337 3.273 3.211 3.149 3.088 3.029 2.97 2.913 2.857 2.801 2.747 2.694 2.642 2.591 2.54 2.491 2.443 2.395 2.348 2.303 2.258 2.214 2.171 2.128 2.087 2.046 2.006 1.967 1.928 1.891 1.854 1.817 1.782 1.747 1.713 1.679 1.646 1.614 1.582 1.551 1.521 1.491 1.462

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.843" PeakHeight="110.0" Num="3" Error="0.0">
-30.059 12.503 -2.871
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.843" EndFrequency="12.05" PeakHeight="346.32" Num="5" zHalfNm="239.34" Error="2.509">
-215.688 -15.133 9.832 -5.135 1.604
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.8" Depth="0.122"/>
<TopsideChapman PeakHeight="346.32" PeakDensity="1801519.9" PeakScaleHeight="78.363" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
