<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-20 -293 18:30:00.000"
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) 18:30:00</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">
FF202629310201830009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.538" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.367" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.950" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="430.000" 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="2.789" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="373.492" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.097" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.277" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="176.289" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.620" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="95.879" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="193.740" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.800" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="53">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
370.000 370.000 372.500 375.000 375.000 375.000 377.500 380.000 385.000 385.000 387.500 390.000 392.500 395.000 400.000 400.000 405.000 405.000 410.000 415.000 415.000 420.000 420.000 425.000 430.000 430.000 437.283 444.566 451.849 459.132 466.415 473.698 480.981 488.264 495.547 502.830 506.216 509.928 514.014 518.534 525.000 530.000 535.000 545.000 550.000 560.000 570.000 585.000 600.000 620.000 645.000 675.000 719.011
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 60 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 -2.734375 -0.390625 0.390625 0.390625 -2.734375 -0.390625 1.171875 0.390625 -1.953125 -0.390625 -1.171875 -1.171875 -0.390625 -2.734375 1.953125 2.734375 1.171875 -1.953125 -0.390625 -1.171875 2.734375 0.390625 -0.390625 -0.390625 -0.390625 -2.734375
</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" >
89.583 90.0 95.0 100.0 105.0 110.0 114.185 115.0 118.371 120.0 122.556 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 373.492 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.874 2.414 2.698 2.789 2.667 2.667 2.667 2.714 2.789 2.859 3.003 3.147 3.294 3.443 3.596 3.753 3.914 4.078 4.246 4.417 4.591 4.766 4.943 5.121 5.3 5.478 5.655 5.831 6.006 6.179 6.35 6.519 6.686 6.851 7.013 7.172 7.329 7.484 7.635 7.784 7.929 8.071 8.21 8.345 8.476 8.603 8.725 8.841 8.953 9.057 9.155 9.245 9.327 9.399 9.462 9.513 9.554 9.581 9.597 9.6 9.6 9.596 9.587 9.573 9.555 9.533 9.506 9.475 9.44 9.402 9.36 9.315 9.267 9.216 9.161 9.104 9.045 8.983 8.919 8.852 8.784 8.714 8.642 8.568 8.493 8.417 8.339 8.26 8.181 8.1 8.018 7.936 7.853 7.769 7.685 7.601 7.516 7.431 7.346 7.26 7.175 7.089 7.004 6.918 6.833 6.748 6.664 6.579 6.495 6.411 6.328 6.245 6.163 6.081 5.999 5.919 5.838 5.759 5.68 5.601 5.523 5.446 5.37 5.294 5.219 5.145 5.072 4.999 4.927 4.856 4.785 4.715 4.647 4.578 4.511 4.444 4.379 4.314 4.249 4.186 4.123 4.061 4.0 3.94 3.88 3.821 3.763 3.706 3.65 3.594 3.539 3.485 3.431 3.378 3.326 3.275 3.224 3.174 3.125 3.077 3.029 2.982 2.935 2.889 2.844 2.8 2.756 2.713 2.67 2.628 2.587 2.546 2.506 2.467 2.428 2.389 2.352 2.315 2.278 2.242 2.206 2.171 2.137 2.103 2.07 2.037

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.789" PeakHeight="110.0" Num="3" Error="0.0">
-30.008 12.43 -2.839
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.789" EndFrequency="9.6" PeakHeight="373.492" Num="5" zHalfNm="243.097" Error="2.87">
-242.721 -14.078 8.79 -4.116 1.189
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.556" Depth="0.122"/>
<TopsideChapman PeakHeight="373.492" PeakDensity="1143424.4" PeakScaleHeight="95.879" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
