<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 18:40:00.000"
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="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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.10.13 (286) 18:40:00</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">
FF202628610131840009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.541" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.347" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="500.000" 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="2.738" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="388.255" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="273.603" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="158.083" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.328" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="86.165" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="180.190" 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="117">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.75 5.8 5.85 5.9 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 11.25 11.3 11.35 11.4 11.45 11.5 11.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 320.000 322.500 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 351.974 353.947 355.921 357.895 359.868 361.842 363.816 365.789 367.763 369.737 371.711 373.684 375.658 377.632 379.605 381.579 383.553 385.526 387.500 389.474 391.447 393.421 395.395 397.368 399.342 401.316 403.289 405.263 407.237 409.211 411.184 413.158 415.132 417.105 419.079 421.053 423.026 425.000 426.974 428.947 430.921 432.895 434.868 436.842 438.816 440.789 442.763 444.737 446.711 448.684 450.658 452.632 454.605 456.579 458.553 460.526 462.500 464.474 466.447 468.421 470.395 472.368 474.342 476.316 478.289 480.263 482.237 484.211 486.184 488.158 490.132 492.105 494.079 496.053 498.026 500.000 505.000 515.000 520.000 530.000 539.388 550.644 564.388 581.546 603.573 632.881 673.797 734.919 836.125
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 66 0 57 63 66 69 63 69 69 69 66 72 72 69 72 72 69 69 72 72 69 69 72 57 69 69 0 0 0 54 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 54 60 60 57 57 57 57 57 54 42 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 -0.390625 0.390625 -0.390625 2.734375 -0.390625 -0.390625 1.953125 -0.390625 -0.390625 2.734375 1.953125 2.734375 1.171875 -0.390625 2.734375 -1.171875 0.390625 -2.734375 0.390625 -0.390625 2.734375 1.171875 1.171875 1.171875 -2.734375 0.390625 -0.390625 2.734375 -2.734375 1.171875 -0.390625 -0.390625 -1.171875 -1.953125 0.390625 -0.390625 2.734375 -0.390625 2.734375 2.734375 1.171875 2.734375 2.734375 -2.734375 -2.734375 -2.734375 -0.390625 0.390625 -2.734375 -1.953125 -2.734375 -1.171875 -1.953125 -0.390625 0.390625 2.734375 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
</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" >
89.593 90.0 95.0 100.0 105.0 110.0 114.425 115.0 118.851 120.0 123.276 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 388.255 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.839 2.37 2.649 2.738 2.615 2.615 2.615 2.647 2.738 2.787 2.934 3.089 3.25 3.416 3.585 3.756 3.928 4.101 4.275 4.449 4.624 4.8 4.977 5.155 5.333 5.513 5.695 5.878 6.063 6.249 6.438 6.628 6.821 7.016 7.212 7.411 7.612 7.815 8.019 8.225 8.432 8.639 8.847 9.054 9.26 9.464 9.666 9.863 10.056 10.242 10.42 10.59 10.75 10.898 11.034 11.156 11.263 11.354 11.429 11.486 11.525 11.546 11.55 11.55 11.543 11.53 11.509 11.482 11.448 11.409 11.363 11.313 11.256 11.195 11.129 11.059 10.985 10.906 10.824 10.739 10.65 10.559 10.464 10.367 10.268 10.167 10.063 9.958 9.851 9.743 9.634 9.524 9.412 9.3 9.187 9.074 8.96 8.846 8.731 8.617 8.503 8.388 8.274 8.16 8.047 7.934 7.821 7.709 7.597 7.487 7.376 7.267 7.159 7.051 6.944 6.838 6.733 6.629 6.526 6.424 6.323 6.224 6.125 6.027 5.931 5.835 5.741 5.648 5.556 5.465 5.376 5.287 5.2 5.114 5.029 4.945 4.863 4.781 4.701 4.622 4.544 4.467 4.391 4.317 4.243 4.171 4.1 4.03 3.96 3.892 3.825 3.759 3.695 3.631 3.568 3.506 3.445 3.385 3.326 3.268 3.211 3.155 3.1 3.046 2.993 2.94 2.889 2.838 2.788 2.739 2.691 2.643 2.597 2.551 2.506 2.462 2.418 2.375 2.333 2.292 2.252 2.212 2.172 2.134 2.096 2.059

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.738" PeakHeight="110.0" Num="3" Error="0.0">
-29.958 12.359 -2.808
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.738" EndFrequency="11.55" PeakHeight="388.255" Num="5" zHalfNm="273.603" Error="3.697">
-245.662 -27.209 8.063 0.972 -1.143
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.276" Depth="0.123"/>
<TopsideChapman PeakHeight="388.255" PeakDensity="1655117.9" PeakScaleHeight="86.165" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
