<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 20:40:00.000"
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="12.0">
<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: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.20 (293) 20:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629310202040009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.805" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.664" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.600" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="436.175" 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="1.231" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="341.969" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="264.471" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.316" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="110.309" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="25.617" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="57.779" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="113.660" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.910" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="35">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
370.000 375.000 375.000 380.000 380.000 380.000 382.143 384.286 386.429 388.571 390.714 392.857 395.000 402.017 409.033 416.050 416.971 417.989 419.118 420.379 421.797 423.402 425.234 427.345 429.803 432.703 436.175 440.407 445.000 455.000 460.000 475.000 490.000 520.000 580.817
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 66 0 69 0 0 66 0 69 60 0 0 0 0 0 0 0 0 51 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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 0.390625 0.390625 -1.171875 2.734375 -1.171875 0.390625 -1.171875 -1.953125 -1.953125 1.171875 -1.953125 1.953125 1.171875 -1.171875 1.171875 -1.171875 2.734375 1.171875 0.390625
</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" >
90.08 95.0 100.0 105.0 110.0 115.0 120.0 123.562 125.0 130.0 135.0 137.123 140.0 145.0 150.0 150.685 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 341.969 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.821 1.066 1.192 1.231 1.21 1.144 1.066 1.066 1.066 1.066 1.066 1.101 1.162 1.223 1.231 1.348 1.491 1.642 1.804 1.976 2.161 2.358 2.568 2.789 3.021 3.263 3.513 3.771 4.035 4.304 4.577 4.851 5.128 5.404 5.681 5.956 6.229 6.498 6.764 7.024 7.278 7.523 7.76 7.985 8.196 8.393 8.572 8.73 8.867 8.979 9.064 9.121 9.148 9.15 9.148 9.133 9.107 9.069 9.02 8.961 8.894 8.817 8.733 8.642 8.544 8.44 8.331 8.218 8.1 7.978 7.854 7.727 7.597 7.466 7.334 7.2 7.065 6.93 6.795 6.66 6.525 6.391 6.257 6.125 5.993 5.862 5.733 5.605 5.479 5.355 5.232 5.111 4.992 4.874 4.759 4.646 4.534 4.425 4.318 4.212 4.109 4.008 3.909 3.812 3.717 3.624 3.533 3.444 3.357 3.272 3.189 3.107 3.028 2.95 2.875 2.801 2.729 2.658 2.589 2.522 2.457 2.393 2.331 2.27 2.211 2.153 2.097 2.042 1.988 1.936 1.885 1.836 1.788 1.741 1.695 1.65 1.607 1.564 1.523 1.483 1.443 1.405 1.368 1.332 1.297 1.262 1.229 1.196 1.165 1.134 1.104 1.074 1.046 1.018 0.991 0.965 0.939 0.914 0.89 0.866 0.843 0.821 0.799 0.778 0.757 0.737 0.717 0.698 0.679 0.661 0.644 0.627 0.61 0.594 0.578 0.562 0.547 0.533 0.519 0.505 0.491 0.478 0.466 0.453 0.441 0.429

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.231" PeakHeight="110.0" Num="3" Error="0.0">
-27.385 8.989 -1.524
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.231" EndFrequency="9.15" PeakHeight="341.969" Num="5" zHalfNm="264.471" Error="1.584">
-187.52 -6.475 4.231 -2.228 0.708
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.685" Depth="0.165"/>
<TopsideChapman PeakHeight="341.969" PeakDensity="1038740.7" PeakScaleHeight="57.779" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
