<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 13:10:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.23 (296) 13:10:00</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">
FF202629610231310009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.469" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.072" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="88" Val="8.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="430.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.306" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.322" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="379.799" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.959" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.159" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="191.807" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.725" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="105.209" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="221.230" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.660" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="71">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 332.500 335.000 337.500 340.000 340.000 345.000 345.000 345.000 345.000 350.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 390.000 390.000 395.000 400.000 405.000 405.000 410.000 415.000 420.000 425.000 425.000 430.000 430.000 436.726 443.451 450.177 456.903 463.628 470.354 477.080 483.805 490.531 497.257 503.982 510.708 517.433 524.159 530.885 537.610 544.336 551.062 557.787 564.513 571.239 577.964 584.690 591.416 598.141 604.867 620.000 635.000 655.000 680.000 705.000 740.241
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 63 0 66 69 66 69 66 57 63 63 66 60 63 63 57 51 54 60 66 72 72 75 75 75 78 78 75 75 72 69 66 63 60 60 66 69 69 69 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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" >
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 -2.734375 -1.171875 -0.390625 0.390625 0.390625 -2.734375 -0.390625 0.390625 0.390625 -1.953125 2.734375 1.953125 1.171875 0.390625 1.953125 2.734375 2.734375 0.390625 0.390625 0.390625 2.734375 -0.390625 -1.953125 -0.390625 2.734375 1.171875 -1.953125
</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" >
89.497 90.0 95.0 100.0 105.0 110.0 111.895 113.79 115.0 115.685 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 379.799 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.224 2.861 3.198 3.306 3.183 3.183 3.262 3.306 3.445 3.592 3.733 3.871 4.009 4.149 4.29 4.435 4.582 4.733 4.887 5.043 5.202 5.363 5.524 5.686 5.847 6.008 6.166 6.323 6.477 6.629 6.778 6.925 7.068 7.209 7.347 7.482 7.615 7.745 7.872 7.997 8.12 8.24 8.358 8.474 8.587 8.698 8.805 8.91 9.012 9.11 9.205 9.295 9.379 9.458 9.53 9.594 9.648 9.692 9.724 9.744 9.75 9.75 9.748 9.741 9.731 9.716 9.698 9.676 9.651 9.622 9.59 9.555 9.517 9.476 9.433 9.386 9.338 9.286 9.233 9.178 9.12 9.061 8.999 8.936 8.872 8.806 8.738 8.67 8.6 8.529 8.457 8.384 8.31 8.235 8.159 8.083 8.007 7.93 7.852 7.774 7.696 7.617 7.538 7.459 7.38 7.301 7.222 7.143 7.064 6.985 6.906 6.828 6.749 6.671 6.594 6.516 6.439 6.362 6.286 6.21 6.134 6.059 5.984 5.91 5.837 5.764 5.691 5.619 5.548 5.477 5.406 5.337 5.268 5.199 5.132 5.064 4.998 4.932 4.867 4.802 4.738 4.675 4.612 4.55 4.489 4.428 4.368 4.309 4.25 4.192 4.135 4.078 4.022 3.966 3.912 3.858 3.804 3.751 3.699 3.648 3.597 3.546 3.497 3.448 3.399 3.351 3.304 3.258 3.212 3.166 3.121 3.077 3.033 2.99 2.948 2.906 2.864 2.824 2.783 2.743 2.704 2.665 2.627 2.59 2.552 2.516

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.306" PeakHeight="110.0" Num="3" Error="0.0">
-30.439 13.061 -3.125
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.306" EndFrequency="9.75" PeakHeight="379.799" Num="5" zHalfNm="233.959" Error="5.503">
-248.964 -26.042 15.595 -7.548 2.845
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.685" Depth="0.123"/>
<TopsideChapman PeakHeight="379.799" PeakDensity="1179435.5" PeakScaleHeight="105.209" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
