<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 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="18.0">
<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: 60% PACIFIC flags: F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.10.09 (282) 21:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628210092140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.601" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.417" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="466.634" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="428.059" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="346.798" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.743" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="117.361" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="19.728" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="61.595" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="111.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.390" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="45">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
400.000 400.000 405.000 400.000 402.500 405.000 410.000 410.000 411.667 413.333 415.000 417.500 420.000 420.000 425.000 425.000 430.000 435.000 435.000 436.250 437.500 438.750 440.000 440.000 440.000 445.000 445.000 445.000 448.426 452.228 456.471 461.239 466.634 472.788 479.875 488.122 497.842 509.466 523.616 541.215 563.699 593.429 634.582 695.306 793.918
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 66 66 0 69 69 75 0 0 66 69 69 63 66 66 72 72 72 0 0 0 78 0 0 69 66 69 78 78 0 69 0 0 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" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 0.390625 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 1.953125 1.953125 1.953125 0.390625 1.171875 2.734375 -0.390625 1.953125 -2.734375 -1.171875 -2.734375 -1.953125 -1.171875
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.195 145.0 150.0 155.0 160.0 165.0 170.0 170.391 175.0 180.0 185.0 190.0 195.0 200.0 200.586 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 428.059 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.323 0.297 0.258 0.203 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.224 0.249 0.275 0.3 0.326 0.351 0.354 0.397 0.452 0.516 0.588 0.667 0.754 0.849 0.952 1.063 1.183 1.312 1.451 1.601 1.761 1.933 2.118 2.315 2.526 2.75 2.987 3.236 3.497 3.767 4.045 4.328 4.614 4.898 5.18 5.454 5.72 5.974 6.216 6.443 6.655 6.851 7.03 7.191 7.335 7.462 7.57 7.661 7.734 7.789 7.827 7.847 7.85 7.849 7.84 7.822 7.795 7.76 7.717 7.667 7.609 7.546 7.477 7.403 7.323 7.24 7.152 7.061 6.967 6.869 6.77 6.668 6.565 6.46 6.354 6.246 6.139 6.03 5.921 5.813 5.704 5.595 5.487 5.38 5.273 5.167 5.061 4.957 4.854 4.752 4.651 4.551 4.453 4.356 4.26 4.166 4.074 3.983 3.893 3.805 3.718 3.633 3.55 3.468 3.387 3.309 3.231 3.156 3.081 3.009 2.937 2.868 2.799 2.733 2.667 2.603 2.541 2.48 2.42 2.361 2.304 2.248 2.194 2.14 2.088 2.037 1.987 1.939 1.891 1.845 1.8 1.755 1.712 1.67 1.629 1.589 1.549 1.511 1.474 1.437 1.402 1.367 1.333 1.3 1.268 1.236 1.206 1.176 1.147 1.118 1.09 1.063 1.037 1.011 0.986 0.961 0.937 0.914 0.891 0.869 0.847 0.826 0.805 0.785 0.766 0.747 0.728 0.71

</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="7.85" PeakHeight="428.059" Num="5" zHalfNm="346.798" Error="4.116">
-234.711 12.746 -8.537 4.471 -1.442
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="90.586" Depth="0.154"/>
<TopsideChapman PeakHeight="428.059" PeakDensity="764547.1" PeakScaleHeight="61.595" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
