<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 21:40:00.000"
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 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" >
2026.10.23 (296) 21:40:00</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">
FF202629610232140009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.215" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.913" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="605.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="605.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="605.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="511.179" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="416.085" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.745" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.740" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.595" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.284" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="139.430" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.970" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
605.000 610.000 615.000 620.000 625.000 630.000 635.000 640.000 645.000 650.000 656.667 663.064 669.903 677.228 685.095 693.565 702.712
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 42 0 0 45 42 39 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 1.953125
</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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.292 145.0 150.0 155.0 160.0 165.0 170.0 170.584 175.0 180.0 185.0 190.0 195.0 200.0 200.876 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 511.179 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.323 0.297 0.259 0.204 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.222 0.248 0.273 0.299 0.324 0.35 0.354 0.389 0.435 0.484 0.538 0.596 0.66 0.729 0.805 0.887 0.976 1.072 1.176 1.289 1.41 1.539 1.677 1.823 1.978 2.142 2.314 2.494 2.682 2.878 3.081 3.292 3.509 3.733 3.963 4.2 4.441 4.688 4.94 5.196 5.456 5.72 5.987 6.257 6.529 6.802 7.076 7.35 7.624 7.896 8.166 8.433 8.695 8.952 9.202 9.445 9.678 9.901 10.111 10.308 10.49 10.656 10.804 10.932 11.04 11.127 11.191 11.232 11.249 11.25 11.247 11.234 11.21 11.178 11.136 11.086 11.028 10.962 10.889 10.81 10.724 10.633 10.537 10.435 10.329 10.22 10.106 9.989 9.869 9.747 9.622 9.495 9.366 9.236 9.104 8.971 8.838 8.704 8.569 8.435 8.3 8.165 8.031 7.897 7.764 7.631 7.499 7.368 7.238 7.108 6.98 6.854 6.728 6.604 6.481 6.36 6.24 6.121 6.005 5.889 5.776 5.663 5.553 5.444 5.337 5.231 5.127 5.025 4.925 4.826 4.729 4.633 4.539 4.447 4.356 4.267 4.179 4.093 4.009 3.926 3.845 3.765 3.687 3.61 3.535 3.461 3.389 3.318 3.248 3.18 3.113 3.047 2.983 2.92 2.858 2.798 2.738 2.68 2.623 2.568 2.513 2.46 2.407 2.356 2.306 2.256 2.208 2.161

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="11.25" PeakHeight="511.179" Num="5" zHalfNm="416.085" Error="3.167">
-306.371 -8.119 6.905 -3.968 1.25
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="90.876" Depth="0.154"/>
<TopsideChapman PeakHeight="511.179" PeakDensity="1570254.4" PeakScaleHeight="71.284" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
