<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 14:30:00.000"
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="15.0">
<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" >
2026.10.16 (289) 14:30:00</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">
FF202628910161430009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.517" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.941" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" 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="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.400" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.365" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="369.625" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="256.911" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.630" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="147.766" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="58.788" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.385" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="188.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 337.308 339.615 341.923 344.231 346.538 348.846 351.154 353.462 355.769 358.077 360.385 362.692 365.000 367.308 369.615 371.923 374.231 376.538 378.846 381.154 383.462 385.769 388.077 390.385 392.692 395.000 397.308 399.615 401.923 404.231 406.538 408.846 411.154 413.462 415.769 418.077 420.385 422.692 425.000 427.308 429.615 431.923 434.231 436.538 438.846 441.154 443.462 445.769 448.077 450.385 452.692 455.000 457.308 459.615 461.923 464.231 466.538 468.846 471.154 473.462 475.769 478.077 480.385 482.692 485.000 487.308 489.615 491.923 494.231 496.538 498.846 501.154 503.462 505.769 508.077 510.385 512.692 515.000 520.000 525.120 531.032 537.934 546.098 555.905 567.907 582.934 602.292 628.172 664.535
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 60 63 69 69 69 60 66 63 66 75 72 72 72 72 66 66 66 69 72 66 69 69 72 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 60 60 60 57 54 51 51 54 54 54 42 48
</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 -2.734375 -1.953125 -2.734375 -0.390625 -0.390625 2.734375 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -2.734375 -1.171875 1.171875 1.953125 1.953125 -0.390625 -0.390625 1.171875 -0.390625 -1.171875 2.734375 -2.734375 -0.390625 1.171875 -2.734375 2.734375 -1.953125 -2.734375 2.734375 1.171875 2.734375 -1.953125 1.171875 -0.390625 -0.390625 1.953125 -2.734375 1.953125 1.953125 0.390625 0.390625 0.390625 -2.734375 0.390625 -1.171875 0.390625 -0.390625 2.734375 -0.390625 1.953125 -0.390625 -2.734375 -1.171875 2.734375 2.734375 -2.734375 -2.734375 -2.734375 -1.171875 2.734375 2.734375 2.734375 0.390625 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.511 113.021 114.532 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 369.625 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.287 2.942 3.289 3.4 3.277 3.277 3.4 3.418 3.601 3.772 3.937 4.097 4.255 4.412 4.568 4.724 4.88 5.037 5.195 5.353 5.513 5.674 5.837 6.0 6.165 6.332 6.499 6.668 6.838 7.01 7.183 7.357 7.532 7.708 7.885 8.063 8.242 8.422 8.603 8.784 8.966 9.148 9.33 9.512 9.693 9.873 10.052 10.228 10.401 10.57 10.732 10.887 11.032 11.164 11.279 11.373 11.444 11.487 11.5 11.5 11.495 11.483 11.462 11.435 11.4 11.359 11.312 11.258 11.199 11.135 11.065 10.991 10.912 10.829 10.742 10.652 10.558 10.461 10.361 10.259 10.154 10.047 9.938 9.827 9.715 9.601 9.486 9.37 9.253 9.135 9.017 8.899 8.78 8.661 8.542 8.422 8.303 8.185 8.066 7.948 7.831 7.714 7.597 7.482 7.367 7.253 7.14 7.028 6.916 6.806 6.697 6.589 6.482 6.376 6.271 6.167 6.065 5.964 5.864 5.765 5.667 5.571 5.476 5.382 5.29 5.199 5.109 5.02 4.933 4.847 4.762 4.678 4.596 4.515 4.435 4.356 4.279 4.203 4.128 4.054 3.981 3.91 3.84 3.77 3.702 3.636 3.57 3.505 3.442 3.379 3.318 3.257 3.198 3.139 3.082 3.026 2.97 2.916 2.862 2.81 2.758 2.707 2.658 2.609 2.561 2.513 2.467 2.421 2.377 2.333 2.289 2.247 2.205 2.165 2.124 2.085 2.046 2.008 1.971 1.934 1.898 1.863 1.828 1.794 1.761 1.728

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.4" PeakHeight="110.0" Num="3" Error="0.0">
-30.507 13.161 -3.172
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.4" EndFrequency="11.5" PeakHeight="369.625" Num="5" zHalfNm="256.911" Error="2.484">
-220.333 -50.091 16.611 -2.072 0.792
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.532" Depth="0.123"/>
<TopsideChapman PeakHeight="369.625" PeakDensity="1640818.9" PeakScaleHeight="82.385" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
