<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 14:20:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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) 14:20:00</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">
FF202629610231420009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.479" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.662" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="511.713" 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="3.390" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.361" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="366.161" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="244.878" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.565" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="156.045" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.444" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.690" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="201.330" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.330" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
6.0 6.05 6.1 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 345.000 347.500 350.000 350.000 351.667 353.333 355.000 355.000 355.000 355.000 355.000 355.000 356.111 357.222 358.333 359.444 360.556 361.667 362.778 363.889 365.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 385.000 385.000 390.000 390.000 392.500 395.000 395.000 400.000 405.000 405.000 405.000 408.335 411.670 415.004 418.339 421.674 425.009 428.343 431.678 435.013 438.348 441.683 445.017 448.352 451.687 455.022 458.357 461.691 465.026 468.361 471.696 475.030 478.365 481.700 485.035 488.370 491.704 495.039 498.374 501.709 505.043 508.378 511.713 515.048 520.000 525.000 530.000 540.000 545.000 555.000 565.000 575.000 585.000 600.000 615.000 630.000 652.833
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 66 0 57 57 0 0 0 66 72 75 72 69 0 0 0 0 66 0 0 0 0 60 69 72 72 69 75 72 72 72 66 72 66 72 63 69 69 66 54 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
</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 1.171875 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 2.734375 -2.734375 2.734375 -2.734375 0.390625 -1.171875 -0.390625 2.734375 -1.171875 1.953125 1.953125 2.734375 -2.734375 2.734375 0.390625 -2.734375 -1.171875 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 -1.171875 -1.171875 2.734375 1.953125 -2.734375 -1.953125 1.171875 2.734375
</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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.551 113.101 114.652 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 366.161 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.281 2.934 3.28 3.39 3.267 3.267 3.39 3.404 3.59 3.758 3.917 4.07 4.22 4.367 4.513 4.659 4.804 4.949 5.095 5.24 5.386 5.533 5.68 5.827 5.975 6.123 6.272 6.421 6.57 6.72 6.87 7.021 7.171 7.322 7.473 7.624 7.775 7.926 8.077 8.228 8.379 8.529 8.678 8.827 8.974 9.121 9.265 9.407 9.545 9.679 9.808 9.929 10.04 10.139 10.223 10.288 10.331 10.349 10.35 10.348 10.34 10.326 10.305 10.28 10.248 10.212 10.17 10.124 10.074 10.019 9.96 9.897 9.831 9.762 9.689 9.613 9.535 9.454 9.371 9.285 9.198 9.108 9.017 8.925 8.831 8.736 8.639 8.542 8.444 8.346 8.246 8.146 8.046 7.946 7.845 7.744 7.644 7.543 7.442 7.342 7.242 7.142 7.043 6.944 6.846 6.748 6.651 6.554 6.458 6.363 6.269 6.175 6.082 5.99 5.899 5.809 5.719 5.631 5.543 5.457 5.371 5.287 5.203 5.12 5.039 4.958 4.878 4.8 4.722 4.645 4.57 4.495 4.421 4.349 4.277 4.207 4.137 4.069 4.001 3.934 3.869 3.804 3.74 3.677 3.615 3.555 3.495 3.435 3.377 3.32 3.264 3.208 3.153 3.1 3.047 2.995 2.943 2.893 2.843 2.795 2.747 2.699 2.653 2.607 2.562 2.518 2.474 2.432 2.39 2.348 2.307 2.267 2.228 2.189 2.151 2.114 2.077 2.041 2.006 1.971 1.936 1.902 1.869 1.837 1.805 1.773

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.39" PeakHeight="110.0" Num="3" Error="0.0">
-30.5 13.151 -3.167
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.39" EndFrequency="10.35" PeakHeight="366.161" Num="5" zHalfNm="244.878" Error="3.824">
-220.095 -47.934 18.373 -2.879 1.026
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.652" Depth="0.123"/>
<TopsideChapman PeakHeight="366.161" PeakDensity="1329063.2" PeakScaleHeight="87.69" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
