<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 18:10:00.000"
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 F2x 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" >
2026.10.22 (295) 18:10:00</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">
FF202629510221810009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.778" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.868" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="12.300" 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="2.899" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="329.151" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.650" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.192" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="94.950" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.830" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="52.223" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="132.530" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="129">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 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 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 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 341.094 342.188 343.281 344.375 345.469 346.563 347.656 348.750 349.844 350.938 352.031 353.125 354.219 355.313 356.406 357.500 358.594 359.688 360.781 361.875 362.969 364.063 365.156 366.250 367.344 368.438 369.531 370.625 371.719 372.813 373.906 375.000 376.094 377.188 378.281 379.375 380.469 381.563 382.656 383.750 384.844 385.938 387.031 388.125 389.219 390.313 391.406 392.500 393.594 394.688 395.781 396.875 397.969 399.063 400.156 401.250 402.344 403.438 404.531 405.625 406.719 407.813 408.906 410.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 440.000 440.000 445.000 445.000 450.000 455.000 455.000 460.000 460.000 470.000 470.000 480.000 485.000 496.794
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 69 69 69 69 69 66 72 72 72 72 69 69 72 72 72 72 69 69 69 72 72 72 69 0 72 72 63 0 69 72 72 72 72 69 69 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 57 63 63 60 63 57 63 66 63 66 63 66 63 57 66 60 66 63 63 66 66 66 63 63 63 63 60
</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 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 0.390625 -1.171875 0.390625 0.390625 -1.171875 1.171875 -2.734375 0.390625 2.734375 0.390625 -1.171875 0.390625 0.390625 -1.171875 -1.953125 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
</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" >
89.563 90.0 95.0 100.0 105.0 110.0 113.676 115.0 117.351 120.0 121.027 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 329.151 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.948 2.509 2.805 2.899 2.777 2.777 2.777 2.865 2.899 3.115 3.366 3.601 3.823 4.036 4.243 4.446 4.645 4.842 5.037 5.233 5.428 5.624 5.821 6.02 6.221 6.424 6.631 6.841 7.054 7.271 7.494 7.72 7.953 8.191 8.435 8.686 8.945 9.21 9.484 9.766 10.057 10.355 10.66 10.971 11.285 11.594 11.891 12.158 12.374 12.512 12.55 12.55 12.535 12.499 12.444 12.371 12.281 12.176 12.057 11.925 11.781 11.628 11.465 11.293 11.115 10.931 10.742 10.548 10.351 10.15 9.948 9.744 9.54 9.335 9.129 8.925 8.721 8.519 8.318 8.119 7.922 7.728 7.536 7.347 7.161 6.977 6.797 6.62 6.446 6.276 6.109 5.946 5.786 5.629 5.476 5.326 5.18 5.037 4.897 4.761 4.628 4.499 4.372 4.249 4.129 4.013 3.899 3.788 3.68 3.575 3.473 3.373 3.276 3.182 3.09 3.001 2.915 2.83 2.748 2.669 2.591 2.516 2.443 2.372 2.303 2.236 2.171 2.107 2.046 1.986 1.928 1.872 1.817 1.764 1.712 1.662 1.613 1.566 1.52 1.476 1.432 1.39 1.35 1.31 1.272 1.234 1.198 1.163 1.129 1.095 1.063 1.032 1.002 0.972 0.944 0.916 0.889 0.863 0.837 0.813 0.789 0.766 0.743 0.721 0.7 0.679 0.659 0.64 0.621 0.603 0.585 0.568 0.551 0.535 0.519 0.504 0.489 0.474 0.461 0.447 0.434 0.421 0.409 0.397 0.385 0.374

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.899" PeakHeight="110.0" Num="3" Error="0.0">
-30.109 12.576 -2.904
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.899" EndFrequency="12.55" PeakHeight="329.151" Num="5" zHalfNm="258.65" Error="2.711">
-168.638 -59.322 19.868 0.764 -0.796
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.027" Depth="0.122"/>
<TopsideChapman PeakHeight="329.151" PeakDensity="1954125.2" PeakScaleHeight="52.223" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
