<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 20:50:00.000"
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: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.10.30 (303) 20:50:00</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">
FF202630310302050009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.387" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.512" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="8.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.000" 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="1.005" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="430.052" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="333.338" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.248" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.395" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.945" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.274" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="147.360" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.700" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="111">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 327.500 330.000 330.000 332.500 335.000 335.000 337.133 339.267 341.400 343.533 345.667 347.800 349.933 352.067 354.200 356.333 358.467 360.600 362.733 364.867 367.000 369.133 371.267 373.400 375.533 377.667 379.800 381.933 384.067 386.200 388.333 390.467 392.600 394.733 396.867 399.000 401.133 403.267 405.400 407.533 409.667 411.800 413.933 416.067 418.200 420.333 422.467 424.600 426.733 428.867 431.000 433.133 435.267 437.400 439.533 441.667 443.800 445.933 448.067 450.200 452.333 454.467 456.600 458.733 460.867 463.000 465.133 467.267 469.400 471.533 473.667 475.800 477.933 480.067 482.200 484.333 486.467 488.600 490.733 492.867 495.000 495.000 500.000 505.000 505.000 505.000 510.000 515.000 520.000 520.000 530.000 530.000 535.000 545.000 545.000 550.000 555.000 560.000 570.000 575.000 581.612 589.163 597.872 608.024 620.011 634.381 651.923 673.816
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 66 69 0 60 66 0 60 66 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 0 0 0 0 0 63 51 63 60 60 60 60 60 57 63 63 63 63 63 66 69 63 0 0 0 54 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 1.171875 -1.171875 2.734375 -1.171875 -0.390625 -0.390625 -1.953125 -1.953125 -1.171875 -1.953125 2.734375 -1.171875 -1.171875 -0.390625 -2.734375 -1.171875 -1.171875 -2.734375 -0.390625 2.734375 2.734375 -1.171875 -1.953125 1.953125 -1.953125 -1.953125 -0.390625 0.390625 2.734375 -0.390625 -0.390625 1.171875 1.171875 0.390625 0.390625 1.953125 -0.390625 0.390625 2.734375 -1.953125 -1.953125 -0.390625 -1.953125 1.171875 -0.390625 -2.734375 -1.953125 2.734375 -1.171875 -1.171875 2.734375 -1.171875 -2.734375 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 1.171875 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.265 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.836 130.0 135.0 140.0 143.671 145.0 150.0 155.0 160.0 160.507 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 430.052 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.669 0.871 0.973 1.005 0.988 0.936 0.842 0.795 0.795 0.795 0.795 0.795 0.812 0.874 0.936 0.999 1.005 1.1 1.202 1.305 1.412 1.522 1.638 1.76 1.889 2.025 2.169 2.321 2.48 2.646 2.819 2.998 3.182 3.371 3.563 3.759 3.957 4.158 4.36 4.564 4.768 4.974 5.179 5.385 5.592 5.798 6.005 6.211 6.417 6.623 6.828 7.033 7.237 7.439 7.64 7.839 8.036 8.229 8.419 8.604 8.784 8.956 9.12 9.273 9.413 9.538 9.645 9.733 9.797 9.836 9.85 9.85 9.845 9.832 9.81 9.779 9.741 9.695 9.643 9.584 9.519 9.448 9.372 9.291 9.206 9.116 9.022 8.925 8.825 8.722 8.617 8.509 8.399 8.288 8.174 8.06 7.945 7.828 7.711 7.594 7.476 7.358 7.24 7.122 7.005 6.887 6.771 6.655 6.539 6.424 6.311 6.198 6.086 5.975 5.866 5.757 5.65 5.544 5.439 5.336 5.234 5.133 5.034 4.936 4.84 4.745 4.651 4.559 4.468 4.379 4.291 4.205 4.12 4.037 3.955 3.875 3.795 3.718 3.641 3.567 3.493 3.421 3.35 3.28 3.212 3.145 3.08 3.015 2.952 2.89 2.83 2.77 2.712 2.655 2.599 2.544 2.49 2.437 2.386 2.335 2.285 2.237 2.189 2.143 2.097 2.052 2.008 1.965 1.923 1.882 1.842 1.803 1.764 1.726 1.689 1.653 1.617 1.583 1.549 1.515 1.483 1.451 1.42 1.389 1.359 1.33

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.005" PeakHeight="110.0" Num="3" Error="0.0">
-26.527 8.02 -1.228
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.005" EndFrequency="9.85" PeakHeight="430.052" Num="5" zHalfNm="333.338" Error="3.688">
-256.478 -24.427 16.292 -7.576 2.644
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="50.507" Depth="0.21"/>
<TopsideChapman PeakHeight="430.052" PeakDensity="1203753.1" PeakScaleHeight="71.274" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
