<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 21:00:00.000"
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 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" >
2026.10.23 (296) 21:00:00</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">
FF202629610232100009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.378" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.391" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="450.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="450.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="570.000" 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="0.806" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="436.567" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="346.582" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.165" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="130.661" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.688" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.985" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="132.870" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="47">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 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 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 10.85 10.9 10.95 11.0 11.05 11.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
450.000 450.000 455.000 455.000 460.000 465.000 465.000 470.000 470.000 475.000 475.000 480.000 485.000 490.000 490.000 495.000 500.000 500.000 505.000 510.000 510.000 515.000 525.000 525.000 530.000 530.000 530.000 535.000 540.000 540.000 545.000 550.000 555.000 557.500 560.000 565.000 570.000 570.000 580.000 585.000 585.000 595.114 606.029 617.844 630.675 644.660 659.962
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 63 57 66 63 57 66 63 66 66 63 66 66 60 66 63 63 63 63 60 57 60 51 60 57 57 0 0 0 0 0 0 0 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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -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="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.535 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 132.808 135.0 140.0 145.0 150.0 155.0 155.617 160.0 165.0 170.0 175.0 178.425 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 436.567 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.535 0.698 0.78 0.806 0.793 0.754 0.684 0.572 0.479 0.479 0.479 0.479 0.479 0.479 0.479 0.542 0.614 0.685 0.757 0.806 0.84 0.942 1.044 1.147 1.255 1.369 1.49 1.62 1.758 1.906 2.065 2.235 2.416 2.608 2.811 3.025 3.248 3.48 3.72 3.968 4.221 4.48 4.744 5.011 5.281 5.554 5.829 6.105 6.382 6.66 6.937 7.214 7.489 7.763 8.034 8.302 8.566 8.826 9.079 9.325 9.563 9.79 10.006 10.209 10.396 10.565 10.714 10.842 10.946 11.024 11.075 11.099 11.1 11.097 11.083 11.058 11.023 10.977 10.922 10.859 10.787 10.707 10.62 10.527 10.428 10.323 10.213 10.098 9.979 9.857 9.731 9.602 9.47 9.336 9.201 9.063 8.925 8.785 8.645 8.504 8.362 8.221 8.079 7.938 7.797 7.657 7.518 7.38 7.242 7.106 6.97 6.837 6.704 6.573 6.443 6.315 6.189 6.064 5.941 5.82 5.7 5.583 5.467 5.353 5.241 5.13 5.022 4.915 4.81 4.707 4.606 4.507 4.41 4.314 4.22 4.128 4.038 3.95 3.863 3.778 3.694 3.613 3.533 3.454 3.377 3.302 3.229 3.156 3.086 3.017 2.949 2.883 2.818 2.755 2.692 2.632 2.572 2.514 2.457 2.402 2.347 2.294 2.242 2.191 2.141 2.092 2.045 1.998 1.953 1.908 1.865 1.822 1.78 1.74 1.7 1.661 1.623 1.586 1.55 1.514 1.48 1.446 1.413 1.38 1.349 1.318

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.806" PeakHeight="110.0" Num="3" Error="0.0">
-25.448 6.914 -0.931
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.806" EndFrequency="11.1" PeakHeight="436.567" Num="5" zHalfNm="346.582" Error="3.141">
-252.104 -11.868 7.957 -4.323 2.196
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="68.425" Depth="0.327"/>
<TopsideChapman PeakHeight="436.567" PeakDensity="1528660.0" PeakScaleHeight="66.985" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
