<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 13:00:00.000"
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="18.0">
<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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.10.11 (284) 13:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628410111300009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.808" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.701" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="11.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.290" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.314" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="327.569" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.376" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.113" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="88.832" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="41.541" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="51.293" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="133.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="132">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 336.067 337.133 338.200 339.267 340.333 341.400 342.467 343.533 344.600 345.667 346.733 347.800 348.867 349.933 351.000 352.067 353.133 354.200 355.267 356.333 357.400 358.467 359.533 360.600 361.667 362.733 363.800 364.867 365.933 367.000 368.067 369.133 370.200 371.267 372.333 373.400 374.467 375.533 376.600 377.667 378.733 379.800 380.867 381.933 383.000 384.067 385.133 386.200 387.267 388.333 389.400 390.467 391.533 392.600 393.667 394.733 395.800 396.867 397.933 399.000 400.067 401.133 402.200 403.267 404.333 405.400 406.467 407.533 408.600 409.667 410.733 411.800 412.867 413.933 415.000 415.000 415.000 420.000 420.000 420.000 425.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 448.671 452.940 457.970 463.981 471.292 480.375 491.966
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 51 54 60 60 0 63 63 63 63 63 63 63 60 63 66 69 69 69 72 72 72 69 69 69 69 69 69 66 66 63 63 0 63 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 0 0 0 0 0 0 0 0 0 0 0 48 54 60 48 54 60 51 57 63 57 60 57 63 63 63 63 63 63 66 66 63 63 60 54
</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 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 1.171875 0.390625 -0.390625 0.390625 2.734375 0.390625 -0.390625 0.390625 1.953125 0.390625 0.390625 -0.390625 -1.171875 -2.734375 -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" >
89.499 90.0 95.0 100.0 105.0 110.0 111.964 113.929 115.0 115.893 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 327.569 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.213 2.847 3.183 3.29 3.168 3.168 3.235 3.29 3.488 3.682 3.856 4.018 4.174 4.326 4.476 4.625 4.775 4.925 5.076 5.23 5.386 5.544 5.706 5.871 6.04 6.214 6.392 6.575 6.764 6.958 7.159 7.366 7.58 7.802 8.032 8.27 8.517 8.772 9.038 9.313 9.597 9.891 10.193 10.501 10.811 11.118 11.41 11.669 11.871 11.985 12.0 11.997 11.976 11.935 11.874 11.797 11.703 11.595 11.473 11.339 11.194 11.04 10.877 10.707 10.53 10.348 10.161 9.97 9.776 9.58 9.382 9.183 8.983 8.783 8.584 8.386 8.188 7.992 7.798 7.606 7.417 7.23 7.045 6.863 6.685 6.509 6.337 6.168 6.002 5.839 5.68 5.524 5.372 5.223 5.078 4.936 4.797 4.662 4.53 4.401 4.276 4.153 4.034 3.918 3.805 3.695 3.588 3.484 3.383 3.284 3.188 3.095 3.004 2.916 2.831 2.747 2.667 2.588 2.512 2.437 2.365 2.295 2.227 2.161 2.097 2.035 1.975 1.916 1.859 1.804 1.75 1.698 1.647 1.598 1.551 1.504 1.459 1.416 1.374 1.333 1.293 1.254 1.217 1.18 1.145 1.111 1.078 1.045 1.014 0.984 0.954 0.926 0.898 0.871 0.845 0.82 0.795 0.771 0.748 0.726 0.704 0.683 0.662 0.643 0.623 0.605 0.587 0.569 0.552 0.535 0.519 0.504 0.489 0.474 0.46 0.446 0.433 0.42 0.407 0.395 0.383 0.372 0.36 0.35 0.339 0.329

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.29" PeakHeight="110.0" Num="3" Error="0.0">
-30.427 13.043 -3.117
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.29" EndFrequency="12.0" PeakHeight="327.569" Num="5" zHalfNm="259.376" Error="4.313">
-159.115 -68.051 12.051 2.835 0.604
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.893" Depth="0.122"/>
<TopsideChapman PeakHeight="327.569" PeakDensity="1786600.5" PeakScaleHeight="51.293" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
