<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 18:00:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: 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" >
2026.11.01 (305) 18:00:00</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">
FF202630511011800009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.791" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.933" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="370.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="370.000" 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="430.000" 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="2.937" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.142" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="319.007" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.870" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.845" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="121.754" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.499" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.768" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="143.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="58">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
375.000 370.000 370.000 372.500 375.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 390.000 392.500 395.000 390.000 392.500 395.000 395.000 395.000 395.000 395.000 395.000 395.000 400.000 400.000 405.000 410.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 425.000 425.000 430.000 430.000 435.000 440.000 444.064 448.614 453.742 459.565 466.237 473.956 482.991 493.709 506.628 522.505 542.486
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 0 69 0 0 66 66 0 66 60 0 0 48 0 0 63 0 0 69 54 66 0 69 60 0 54 45 60 57 60 63 63 60 57 60 60 60 63 60 60 60 60 60 57 54 0 0 0 0 0 0 0 0 0 0 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 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 2.734375 1.171875 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" >
89.556 90.0 95.0 100.0 105.0 110.0 113.503 115.0 117.006 120.0 120.509 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 319.007 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.974 2.542 2.842 2.937 2.815 2.815 2.815 2.919 2.937 3.116 3.325 3.546 3.779 4.025 4.283 4.55 4.824 5.102 5.381 5.659 5.933 6.204 6.47 6.732 6.988 7.24 7.488 7.732 7.972 8.209 8.443 8.675 8.904 9.131 9.356 9.58 9.801 10.021 10.239 10.455 10.667 10.874 11.074 11.264 11.439 11.591 11.709 11.781 11.8 11.8 11.79 11.768 11.733 11.687 11.63 11.563 11.486 11.401 11.307 11.205 11.097 10.982 10.861 10.735 10.605 10.47 10.331 10.189 10.044 9.896 9.746 9.595 9.442 9.288 9.134 8.978 8.823 8.667 8.512 8.357 8.203 8.049 7.897 7.745 7.595 7.446 7.298 7.152 7.008 6.865 6.724 6.585 6.448 6.313 6.179 6.048 5.919 5.792 5.667 5.544 5.423 5.304 5.188 5.073 4.961 4.851 4.742 4.636 4.532 4.43 4.33 4.232 4.136 4.042 3.95 3.86 3.771 3.685 3.6 3.517 3.436 3.357 3.279 3.203 3.129 3.056 2.985 2.916 2.848 2.781 2.716 2.653 2.591 2.53 2.471 2.413 2.356 2.301 2.247 2.194 2.142 2.092 2.042 1.994 1.947 1.901 1.856 1.813 1.77 1.728 1.687 1.647 1.608 1.57 1.533 1.496 1.461 1.426 1.393 1.36 1.327 1.296 1.265 1.235 1.206 1.177 1.149 1.122 1.095 1.069 1.044 1.019 0.995 0.971 0.948 0.925 0.903 0.882 0.861 0.84 0.82 0.801 0.782 0.763 0.745 0.727

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.937" PeakHeight="110.0" Num="3" Error="0.0">
-30.142 12.624 -2.926
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.937" EndFrequency="11.8" PeakHeight="319.007" Num="5" zHalfNm="227.87" Error="2.613">
-179.635 -31.862 19.731 -8.31 1.578
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.509" Depth="0.122"/>
<TopsideChapman PeakHeight="319.007" PeakDensity="1727543.4" PeakScaleHeight="64.768" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
