<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 15:50:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.11.03 (307) 15:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630711031550009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.830" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.819" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="375.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="375.000" 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="11.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="430.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.331" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.333" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="301.583" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="213.553" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.155" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="113.190" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.742" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="60.426" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="142.970" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.270" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="56">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
375.000 375.000 375.000 375.000 375.000 375.000 375.000 376.667 378.333 380.000 380.000 380.000 381.250 382.500 383.750 385.000 386.250 387.500 388.750 390.000 390.000 390.000 391.667 393.333 395.000 390.000 390.000 392.500 395.000 395.000 400.000 400.000 400.000 405.000 405.000 405.000 410.000 410.000 415.000 417.500 420.000 422.500 425.000 425.000 430.000 430.000 435.000 440.000 440.000 445.000 449.715 455.200 461.661 469.382 478.774 490.443
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 0 0 57 0 0 0 0 0 0 0 0 0 0 0 0 0 54 0 57 0 0 54 60 48 0 0 57 60 0 63 0 0 60 57 60 48 0 0 0 45 0 60 60 60 51 0 57 54 51 54 51 54 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 -1.171875 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 -1.953125 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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.795 113.591 115.0 115.386 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 301.583 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.241 2.883 3.223 3.331 3.208 3.208 3.305 3.331 3.534 3.763 4.004 4.261 4.533 4.818 5.112 5.41 5.707 5.999 6.285 6.562 6.83 7.091 7.343 7.589 7.828 8.061 8.29 8.515 8.735 8.953 9.169 9.383 9.595 9.807 10.018 10.229 10.44 10.652 10.864 11.077 11.289 11.497 11.691 11.854 11.944 11.95 11.946 11.928 11.895 11.849 11.789 11.718 11.635 11.542 11.44 11.328 11.209 11.083 10.949 10.81 10.666 10.517 10.364 10.207 10.048 9.886 9.721 9.556 9.388 9.22 9.052 8.883 8.714 8.546 8.378 8.211 8.045 7.88 7.717 7.555 7.394 7.236 7.079 6.925 6.772 6.622 6.474 6.328 6.184 6.043 5.905 5.768 5.634 5.503 5.374 5.247 5.123 5.002 4.882 4.766 4.651 4.539 4.43 4.322 4.218 4.115 4.014 3.916 3.82 3.726 3.635 3.545 3.457 3.372 3.288 3.207 3.127 3.049 2.973 2.899 2.827 2.756 2.687 2.62 2.554 2.49 2.427 2.366 2.307 2.248 2.192 2.137 2.083 2.03 1.979 1.929 1.88 1.832 1.786 1.741 1.697 1.654 1.612 1.571 1.531 1.492 1.454 1.417 1.381 1.346 1.312 1.279 1.246 1.215 1.184 1.154 1.124 1.096 1.068 1.04 1.014 0.988 0.963 0.939 0.915 0.891 0.869 0.846 0.825 0.804 0.783 0.763 0.744 0.725 0.707 0.688 0.671 0.654 0.637 0.621 0.605 0.59 0.575 0.56 0.546 0.532

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.331" PeakHeight="110.0" Num="3" Error="0.0">
-30.458 13.088 -3.138
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.331" EndFrequency="11.95" PeakHeight="301.583" Num="5" zHalfNm="213.553" Error="3.057">
-161.246 -42.351 26.406 -11.189 2.183
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.386" Depth="0.123"/>
<TopsideChapman PeakHeight="301.583" PeakDensity="1771743.1" PeakScaleHeight="60.426" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
