<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 15:40:00.000"
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: 50% PACIFIC flags: F2x cusp not found, 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) 15:40:00</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">
FF202630711031540009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.775" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.166" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="380.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="380.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="425.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.344" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.339" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="311.618" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.789" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.101" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="121.828" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.309" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.381" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="150.840" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="57">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
380.000 380.000 380.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 390.000 395.000 397.500 400.000 398.333 396.667 395.000 400.000 400.000 400.000 401.667 403.333 405.000 405.000 408.333 411.667 415.000 415.000 417.500 420.000 422.500 425.000 425.000 430.000 433.333 436.667 439.568 442.757 446.282 450.195 454.568 459.483 465.051 471.409 478.740 487.284 497.369 509.455 524.202
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 0 0 60 0 0 0 60 0 0 0 0 60 0 63 66 57 60 0 54 0 0 63 66 57 60 0 0 0 54 0 0 45 54 0 48 45 48 0 57 0 0 51 54 57 54 0 48 0 45 51 48 48 51 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 -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 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 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
</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" >
89.49 90.0 95.0 100.0 105.0 110.0 111.739 113.478 115.0 115.217 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 311.618 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.25 2.894 3.235 3.344 3.221 3.221 3.329 3.344 3.542 3.761 3.991 4.235 4.492 4.76 5.035 5.314 5.594 5.871 6.143 6.409 6.669 6.923 7.17 7.411 7.647 7.878 8.105 8.327 8.546 8.763 8.976 9.188 9.398 9.606 9.813 10.02 10.225 10.43 10.634 10.837 11.038 11.235 11.427 11.606 11.764 11.885 11.946 11.95 11.947 11.931 11.903 11.863 11.812 11.75 11.679 11.598 11.509 11.412 11.307 11.196 11.078 10.955 10.827 10.695 10.558 10.418 10.274 10.128 9.979 9.828 9.676 9.522 9.368 9.212 9.057 8.901 8.745 8.589 8.434 8.279 8.125 7.972 7.82 7.67 7.52 7.372 7.226 7.081 6.938 6.797 6.658 6.52 6.385 6.251 6.12 5.99 5.863 5.737 5.614 5.493 5.374 5.257 5.142 5.029 4.918 4.81 4.703 4.598 4.496 4.395 4.297 4.2 4.106 4.013 3.922 3.833 3.746 3.661 3.577 3.496 3.416 3.337 3.261 3.186 3.113 3.041 2.971 2.902 2.835 2.77 2.706 2.643 2.581 2.522 2.463 2.406 2.35 2.295 2.242 2.189 2.138 2.088 2.039 1.992 1.945 1.9 1.855 1.812 1.769 1.728 1.687 1.648 1.609 1.572 1.535 1.499 1.463 1.429 1.395 1.363 1.331 1.299 1.269 1.239 1.21 1.181 1.154 1.126 1.1 1.074 1.049 1.024 1.0 0.976 0.953 0.931 0.909 0.888 0.867 0.846 0.826 0.807 0.788 0.769 0.751 0.733

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.344" PeakHeight="110.0" Num="3" Error="0.0">
-30.468 13.102 -3.144
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.344" EndFrequency="11.95" PeakHeight="311.618" Num="5" zHalfNm="217.789" Error="2.815">
-173.323 -39.004 24.0 -9.841 1.767
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.217" Depth="0.123"/>
<TopsideChapman PeakHeight="311.618" PeakDensity="1771743.1" PeakScaleHeight="65.381" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
