<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 19:40:00.000"
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: 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" >
2026.10.19 (292) 19:40:00</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">
FF202629210191940009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.438" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.351" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.746" 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="2.220" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="391.773" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="274.749" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.470" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.868" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.129" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.142" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="178.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.630" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="86">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 330.000 331.667 333.333 335.000 337.000 339.000 341.000 343.000 345.000 345.000 346.667 348.333 350.000 350.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 380.000 380.000 380.000 383.199 386.398 389.596 392.795 395.994 399.193 402.391 405.590 408.789 411.988 415.187 418.385 421.584 424.783 427.982 431.181 434.379 437.578 440.777 443.976 447.174 450.373 453.572 456.771 459.970 463.168 466.367 469.566 472.765 475.963 479.162 482.361 485.560 488.759 491.957 495.156 498.355 501.554 504.753 507.951 511.150 514.349 517.548 520.746 523.945 528.847 535.000 540.000 545.000 555.000 560.000 570.000 580.000 590.000 605.000 620.000 640.000 660.000 684.690
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 72 0 0 72 0 0 0 0 69 0 0 0 69 66 0 63 69 0 66 69 63 72 69 60 69 72 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 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 -2.734375 -0.390625 2.734375 -1.953125 0.390625 -2.734375 1.953125 -0.390625 0.390625 -2.734375 2.734375 -0.390625 -2.734375 -0.390625 -2.734375 -1.953125 -0.390625 2.734375 1.171875 2.734375 -1.953125 1.953125 0.390625 -2.734375 -1.953125 -0.390625 -2.734375 1.171875 2.734375 -1.171875 -1.953125 -1.953125 -0.390625 2.734375 -2.734375 2.734375 0.390625 -1.171875 2.734375 -0.390625 -0.390625 -0.390625 -1.953125 2.734375 1.953125 1.171875 -1.953125 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" >
89.703 90.0 95.0 100.0 105.0 110.0 115.0 117.021 120.0 124.042 125.0 130.0 131.063 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 391.773 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.225 1.489 1.922 2.148 2.22 2.156 2.092 2.092 2.092 2.109 2.201 2.22 2.335 2.48 2.626 2.775 2.928 3.087 3.251 3.42 3.594 3.774 3.958 4.146 4.336 4.529 4.723 4.918 5.113 5.308 5.502 5.695 5.887 6.077 6.266 6.453 6.638 6.822 7.004 7.184 7.363 7.54 7.715 7.889 8.061 8.231 8.399 8.564 8.728 8.889 9.047 9.201 9.352 9.497 9.638 9.771 9.896 10.012 10.117 10.208 10.283 10.342 10.38 10.399 10.4 10.399 10.391 10.376 10.356 10.329 10.296 10.258 10.215 10.166 10.113 10.056 9.994 9.928 9.859 9.786 9.71 9.63 9.548 9.463 9.376 9.287 9.195 9.102 9.007 8.91 8.812 8.713 8.612 8.511 8.409 8.307 8.203 8.1 7.996 7.892 7.787 7.683 7.579 7.475 7.371 7.268 7.164 7.062 6.959 6.858 6.757 6.656 6.556 6.457 6.359 6.262 6.165 6.069 5.975 5.881 5.788 5.696 5.605 5.515 5.426 5.338 5.251 5.165 5.081 4.997 4.914 4.833 4.752 4.673 4.595 4.517 4.441 4.366 4.292 4.219 4.147 4.076 4.007 3.938 3.87 3.803 3.738 3.673 3.609 3.547 3.485 3.424 3.365 3.306 3.248 3.191 3.135 3.08 3.026 2.972 2.92 2.869 2.818 2.768 2.719 2.671 2.623 2.577 2.531 2.486 2.442 2.398 2.355 2.313 2.272 2.231 2.192 2.152 2.114 2.076 2.039 2.002 1.966 1.931 1.896 1.862 1.829

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.22" PeakHeight="110.0" Num="3" Error="0.0">
-29.38 11.542 -2.459
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.22" EndFrequency="10.4" PeakHeight="391.773" Num="5" zHalfNm="274.749" Error="3.358">
-246.125 -26.187 17.024 -7.403 1.981
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="21.063" Depth="0.128"/>
<TopsideChapman PeakHeight="391.773" PeakDensity="1341935.5" PeakScaleHeight="85.142" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
