<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 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 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" >
2026.10.26 (299) 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">
FF202629910261820009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="10.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.461" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.227" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="88" Val="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="550.960" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.838" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="373.841" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.903" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.237" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="152.290" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.942" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.789" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="190.050" 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="78">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 345.000 345.000 350.000 355.000 357.500 360.000 360.000 360.000 365.000 365.000 368.333 371.667 375.000 375.000 378.000 381.000 384.000 387.000 390.000 390.000 390.000 390.000 393.285 396.570 399.855 403.140 406.424 409.709 412.994 416.279 419.564 422.849 426.134 429.419 432.704 435.989 439.273 442.558 445.843 449.128 452.413 455.698 458.983 462.268 465.553 468.837 472.122 475.407 478.692 481.977 485.262 488.547 491.832 495.117 498.402 501.686 504.971 508.256 511.541 514.826 518.111 521.396 524.681 527.966 531.250 534.535 537.820 541.105 544.390 547.675 550.960 560.000 565.000 580.000 595.000 620.000 659.447
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 69 78 75 60 72 78 81 78 78 0 0 69 72 0 0 0 0 57 69 72 69 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
</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 2.734375 -0.390625 -1.953125 0.390625 -1.171875 2.734375 2.734375 -0.390625 -2.734375 -0.390625 0.390625 2.734375 -0.390625 -0.390625 0.390625 1.953125 2.734375 -2.734375 -1.953125 -1.953125 1.953125 0.390625 -1.171875 -2.734375 -2.734375 -1.953125 -2.734375 2.734375 2.734375 2.734375 -0.390625 -0.390625 -1.953125 -2.734375 -0.390625 1.171875 1.953125 -1.953125 -0.390625 -1.171875 0.390625 -2.734375 2.734375 -1.953125 -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" >
89.575 90.0 95.0 100.0 105.0 110.0 113.953 115.0 117.905 120.0 121.858 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 373.841 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.907 2.457 2.746 2.838 2.716 2.716 2.716 2.781 2.838 2.938 3.099 3.261 3.424 3.589 3.755 3.922 4.09 4.259 4.427 4.595 4.762 4.929 5.094 5.259 5.423 5.585 5.747 5.907 6.067 6.225 6.383 6.539 6.695 6.85 7.005 7.159 7.312 7.465 7.618 7.77 7.922 8.073 8.225 8.376 8.526 8.677 8.826 8.975 9.123 9.269 9.413 9.553 9.689 9.818 9.937 10.044 10.134 10.201 10.241 10.25 10.25 10.245 10.232 10.213 10.188 10.157 10.12 10.077 10.029 9.976 9.918 9.856 9.79 9.719 9.645 9.568 9.488 9.404 9.318 9.229 9.138 9.045 8.95 8.853 8.755 8.655 8.554 8.452 8.349 8.246 8.142 8.037 7.932 7.826 7.72 7.615 7.509 7.404 7.298 7.193 7.088 6.984 6.88 6.777 6.675 6.573 6.472 6.371 6.272 6.173 6.075 5.978 5.882 5.787 5.693 5.6 5.508 5.417 5.327 5.238 5.15 5.064 4.978 4.894 4.81 4.728 4.647 4.567 4.488 4.411 4.334 4.259 4.184 4.111 4.039 3.968 3.898 3.829 3.761 3.694 3.629 3.564 3.5 3.438 3.376 3.316 3.256 3.197 3.14 3.083 3.027 2.973 2.919 2.866 2.814 2.763 2.712 2.663 2.614 2.567 2.52 2.474 2.429 2.384 2.34 2.297 2.255 2.214 2.173 2.133 2.094 2.055 2.018 1.98 1.944 1.908 1.873 1.838 1.804 1.771 1.738 1.706 1.674 1.643 1.613 1.583

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.838" PeakHeight="110.0" Num="3" Error="0.0">
-30.054 12.497 -2.868
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.838" EndFrequency="10.25" PeakHeight="373.841" Num="5" zHalfNm="257.903" Error="1.756">
-223.385 -47.472 24.82 -7.032 1.086
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.858" Depth="0.122"/>
<TopsideChapman PeakHeight="373.841" PeakDensity="1303505.0" PeakScaleHeight="82.789" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
