<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 19:10:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: 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) 19:10:00</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">
FF202629610231910009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.719" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.678" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" 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="11.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" 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="2.500" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="331.116" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="240.568" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.415" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="123.133" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.958" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.384" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="139.620" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.520" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="48">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
400.000 400.000 405.000 405.714 406.429 407.143 407.857 408.571 409.286 410.000 410.000 415.000 415.000 417.500 420.000 420.000 420.000 420.000 425.000 425.000 425.000 425.000 425.000 425.000 430.000 430.000 435.000 435.000 435.000 440.000 440.000 445.000 445.000 445.000 450.000 455.000 455.000 460.000 464.557 469.605 475.225 481.522 488.627 496.703 505.967 516.700 529.282 544.235
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 0 0 0 45 0 54 60 54 0 48 54 57 0 0 45 0 42 48 0 0 42 48 54 48 39 39 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 -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 1.953125 2.734375 1.171875 -1.953125 -0.390625 -1.171875
</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" >
89.639 90.0 95.0 100.0 105.0 110.0 115.0 115.582 120.0 121.164 125.0 126.746 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 331.116 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.679 2.165 2.419 2.5 2.4 2.375 2.375 2.375 2.461 2.5 2.633 2.83 3.027 3.23 3.443 3.669 3.909 4.162 4.429 4.707 4.992 5.281 5.571 5.858 6.141 6.419 6.691 6.958 7.218 7.474 7.724 7.969 8.211 8.448 8.682 8.913 9.142 9.367 9.59 9.811 10.029 10.244 10.456 10.663 10.863 11.054 11.232 11.39 11.519 11.609 11.649 11.65 11.646 11.629 11.6 11.558 11.506 11.443 11.37 11.288 11.198 11.1 10.995 10.883 10.765 10.642 10.513 10.381 10.244 10.104 9.961 9.815 9.667 9.517 9.365 9.213 9.059 8.905 8.751 8.596 8.442 8.288 8.135 7.982 7.83 7.679 7.53 7.382 7.235 7.089 6.946 6.804 6.663 6.525 6.388 6.254 6.121 5.99 5.862 5.735 5.611 5.489 5.368 5.25 5.134 5.02 4.908 4.799 4.691 4.585 4.482 4.38 4.281 4.183 4.088 3.994 3.903 3.813 3.725 3.639 3.555 3.473 3.392 3.314 3.237 3.161 3.087 3.015 2.945 2.876 2.808 2.742 2.678 2.615 2.553 2.493 2.434 2.377 2.321 2.266 2.212 2.16 2.109 2.059 2.01 1.962 1.916 1.87 1.826 1.783 1.74 1.699 1.658 1.619 1.58 1.543 1.506 1.47 1.435 1.401 1.367 1.335 1.303 1.272 1.241 1.212 1.183 1.155 1.127 1.1 1.074 1.048 1.023 0.999 0.975 0.951 0.929 0.906 0.885 0.864 0.843 0.823 0.803 0.784 0.765 0.747

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.5" PeakHeight="110.0" Num="3" Error="0.0">
-29.716 12.011 -2.656
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.5" EndFrequency="11.65" PeakHeight="331.116" Num="5" zHalfNm="240.568" Error="3.865">
-187.451 -29.225 19.301 -9.923 2.928
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.746" Depth="0.125"/>
<TopsideChapman PeakHeight="331.116" PeakDensity="1683902.0" PeakScaleHeight="64.384" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
