<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 21:00:00.000"
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="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) 21:00:00</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">
FF202630310302100009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.377" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.701" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="510.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="510.000" 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="8.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" 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="0.806" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="429.306" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="340.085" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.166" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="129.097" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="32.037" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.218" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="132.390" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.850" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
510.000 510.000 515.000 515.000 520.000 525.000 530.000 535.000 540.000 540.000 545.000 550.000 555.000 560.000 564.064 568.568 573.588 579.218 585.577 592.814 601.127 610.773 622.103 635.599
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 57 0 60 0 57 57 0 51 60 0 57 57 57 57 57 57 54 54 0 0 0 51 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -1.953125 -2.734375 -2.734375 -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" >
90.535 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 132.803 135.0 140.0 145.0 150.0 155.0 155.605 160.0 165.0 170.0 175.0 178.408 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 429.306 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.535 0.698 0.78 0.806 0.793 0.754 0.684 0.572 0.479 0.479 0.479 0.479 0.479 0.479 0.479 0.542 0.614 0.685 0.757 0.806 0.839 0.938 1.034 1.132 1.233 1.34 1.453 1.573 1.702 1.839 1.987 2.143 2.31 2.487 2.673 2.868 3.07 3.28 3.495 3.716 3.941 4.169 4.4 4.633 4.867 5.103 5.339 5.576 5.812 6.048 6.283 6.517 6.749 6.979 7.206 7.43 7.65 7.866 8.075 8.277 8.471 8.655 8.827 8.986 9.129 9.255 9.361 9.445 9.505 9.54 9.55 9.55 9.543 9.527 9.5 9.465 9.421 9.369 9.31 9.244 9.171 9.092 9.008 8.919 8.825 8.726 8.624 8.519 8.41 8.299 8.185 8.069 7.952 7.832 7.712 7.591 7.468 7.346 7.223 7.1 6.977 6.854 6.731 6.609 6.488 6.367 6.247 6.129 6.011 5.894 5.779 5.664 5.552 5.44 5.33 5.221 5.114 5.009 4.905 4.802 4.701 4.602 4.505 4.409 4.314 4.222 4.131 4.041 3.953 3.867 3.783 3.7 3.618 3.538 3.46 3.383 3.308 3.234 3.162 3.091 3.022 2.954 2.888 2.823 2.759 2.697 2.636 2.576 2.517 2.46 2.404 2.349 2.296 2.243 2.192 2.142 2.093 2.045 1.998 1.952 1.907 1.864 1.821 1.779 1.738 1.698 1.659 1.62 1.583 1.546 1.511 1.476 1.442 1.408 1.376 1.344 1.313 1.282 1.253 1.224 1.195 1.168 1.14 1.114 1.088 1.063

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.806" PeakHeight="110.0" Num="3" Error="0.0">
-25.448 6.914 -0.931
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.806" EndFrequency="9.55" PeakHeight="429.306" Num="5" zHalfNm="340.085" Error="3.968">
-243.188 -14.278 9.082 -4.93 2.416
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="68.408" Depth="0.327"/>
<TopsideChapman PeakHeight="429.306" PeakDensity="1131544.6" PeakScaleHeight="66.218" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
