<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 20:00:00.000"
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 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" >
2026.10.09 (282) 20:00:00</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">
FF202628210092000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.451" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.453" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="10.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="522.194" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.998" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="397.345" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="287.932" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.463" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="152.645" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.582" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="79.870" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.120" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.620" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="106">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 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 10.95 11.0 11.05 11.1 11.15 11.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 355.000 355.000 357.612 360.225 362.837 365.450 368.062 370.674 373.287 375.899 378.512 381.124 383.736 386.349 388.961 391.574 394.186 396.798 399.411 402.023 404.636 407.248 409.860 412.473 415.085 417.698 420.310 422.922 425.535 428.147 430.760 433.372 435.984 438.597 441.209 443.822 446.434 449.046 451.659 454.271 456.884 459.496 462.108 464.721 467.333 469.946 472.558 475.170 477.783 480.395 483.008 485.620 488.232 490.845 493.457 496.070 498.682 501.294 503.907 506.519 509.132 511.744 514.356 516.969 519.581 522.194 526.193 530.561 535.350 540.000 545.000 555.000 560.000 570.000 580.000 590.000 600.000 615.000 630.000 655.000 678.333
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 78 84 69 0 78 81 81 75 75 81 75 78 78 78 81 78 66 78 75 75 72 78 69 75 75 75 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 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 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 -1.953125 -0.390625 -1.171875 -2.734375 -0.390625 -1.953125 -0.390625 1.171875 0.390625 0.390625 0.390625 2.734375 -2.734375 -1.171875 0.390625 -1.171875 1.171875 -2.734375 1.953125 2.734375 0.390625 -0.390625 -1.171875 1.171875 1.953125 2.734375 -1.171875 -0.390625 -0.390625 -1.171875 0.390625 1.953125 2.734375 -0.390625 0.390625 2.734375 1.953125 1.171875 1.953125 2.734375 0.390625 -2.734375 2.734375 -2.734375 2.734375 1.953125 2.734375 1.953125 1.171875 2.734375 2.734375 0.390625 1.171875 0.390625 -0.390625 0.390625 1.171875 -1.171875 0.390625 -1.953125 1.171875 -1.171875 1.953125 0.390625 -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" >
89.761 90.0 95.0 100.0 105.0 110.0 115.0 118.223 120.0 125.0 126.445 130.0 134.668 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 397.345 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.221 1.339 1.73 1.934 1.998 1.95 1.866 1.866 1.866 1.866 1.923 1.998 2.008 2.159 2.308 2.458 2.611 2.769 2.932 3.102 3.277 3.459 3.647 3.841 4.039 4.242 4.448 4.657 4.867 5.079 5.292 5.505 5.718 5.931 6.143 6.354 6.564 6.773 6.981 7.188 7.394 7.598 7.801 8.003 8.203 8.402 8.6 8.795 8.989 9.181 9.37 9.557 9.74 9.918 10.092 10.26 10.421 10.572 10.713 10.841 10.954 11.048 11.122 11.172 11.197 11.2 11.199 11.19 11.173 11.149 11.117 11.079 11.033 10.981 10.924 10.86 10.791 10.718 10.639 10.556 10.47 10.379 10.285 10.187 10.087 9.984 9.878 9.771 9.661 9.549 9.436 9.321 9.206 9.089 8.971 8.853 8.734 8.615 8.495 8.375 8.256 8.136 8.017 7.898 7.779 7.661 7.543 7.426 7.31 7.194 7.079 6.966 6.853 6.741 6.63 6.52 6.412 6.304 6.198 6.093 5.989 5.886 5.785 5.685 5.586 5.488 5.392 5.297 5.203 5.111 5.02 4.93 4.842 4.755 4.669 4.585 4.502 4.42 4.339 4.26 4.182 4.105 4.03 3.955 3.882 3.811 3.74 3.671 3.602 3.535 3.469 3.404 3.341 3.278 3.217 3.156 3.097 3.039 2.981 2.925 2.87 2.815 2.762 2.71 2.659 2.608 2.559 2.51 2.462 2.415 2.369 2.324 2.28 2.236 2.194 2.152 2.111 2.07 2.031 1.992 1.954 1.916 1.879 1.843 1.808 1.773 1.739

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.998" PeakHeight="110.0" Num="3" Error="0.0">
-29.067 11.114 -2.286
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.998" EndFrequency="11.2" PeakHeight="397.345" Num="5" zHalfNm="287.932" Error="3.334">
-246.968 -28.045 17.637 -7.445 2.144
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="24.668" Depth="0.132"/>
<TopsideChapman PeakHeight="397.345" PeakDensity="1556327.5" PeakScaleHeight="79.87" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
