<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 20:20:00.000"
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" >
2026.11.01 (305) 20:20:00</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">
FF202630511012020009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.367" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.803" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="470.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="470.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="535.000" 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="1.631" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="415.819" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="305.385" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.439" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.728" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.005" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.418" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="166.420" 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="46">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
470.000 470.000 470.000 475.000 475.000 477.500 480.000 480.000 485.000 485.000 490.000 490.000 495.000 500.000 500.000 505.000 507.500 510.000 515.000 520.000 520.000 520.000 520.000 525.000 535.000 535.000 535.000 535.000 545.000 545.000 550.000 560.000 560.000 570.000 575.000 575.000 581.307 588.177 595.690 603.941 613.044 623.138 634.394 647.025 661.300 677.561
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 60 0 60 66 60 0 60 51 60 51 60 63 63 0 0 60 57 0 63 57 60 63 60 60 60 54 0 60 51 57 51 51 51 45 54 48 48 45 45 48 51 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -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 -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 -1.171875
</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" >
89.882 90.0 95.0 100.0 105.0 110.0 115.0 120.0 120.389 125.0 130.0 130.779 135.0 140.0 141.168 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 415.819 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21 1.091 1.413 1.579 1.631 1.599 1.5 1.489 1.489 1.489 1.489 1.547 1.615 1.631 1.73 1.855 1.978 2.103 2.232 2.366 2.506 2.654 2.81 2.974 3.147 3.329 3.518 3.715 3.918 4.127 4.339 4.554 4.77 4.987 5.204 5.421 5.636 5.849 6.062 6.272 6.48 6.687 6.891 7.094 7.295 7.495 7.692 7.888 8.082 8.274 8.465 8.653 8.839 9.023 9.204 9.382 9.556 9.726 9.891 10.05 10.201 10.343 10.474 10.592 10.694 10.779 10.842 10.883 10.9 10.9 10.897 10.886 10.868 10.842 10.81 10.771 10.725 10.674 10.616 10.554 10.486 10.414 10.337 10.256 10.171 10.083 9.991 9.897 9.799 9.699 9.597 9.492 9.386 9.278 9.168 9.057 8.945 8.832 8.718 8.604 8.489 8.374 8.258 8.142 8.027 7.911 7.796 7.681 7.566 7.452 7.338 7.225 7.112 7.001 6.89 6.78 6.671 6.563 6.456 6.349 6.244 6.14 6.038 5.936 5.835 5.736 5.638 5.541 5.445 5.351 5.258 5.166 5.075 4.986 4.898 4.811 4.725 4.641 4.558 4.476 4.395 4.316 4.238 4.161 4.085 4.011 3.938 3.866 3.795 3.725 3.657 3.589 3.523 3.458 3.394 3.331 3.269 3.208 3.148 3.09 3.032 2.975 2.92 2.865 2.811 2.758 2.706 2.656 2.606 2.557 2.508 2.461 2.414 2.369 2.324 2.28 2.237 2.195 2.153 2.112 2.072 2.033 1.994 1.956 1.919 1.882 1.847

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.631" PeakHeight="110.0" Num="3" Error="0.0">
-28.413 10.254 -1.959
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.631" EndFrequency="10.9" PeakHeight="415.819" Num="5" zHalfNm="305.385" Error="4.447">
-259.849 -25.958 17.513 -9.788 3.431
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="31.168" Depth="0.142"/>
<TopsideChapman PeakHeight="415.819" PeakDensity="1474069.5" PeakScaleHeight="80.418" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
