<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 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="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 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" >
2026.10.16 (289) 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">
FF202628910161840009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.504" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.674" 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="11.400" 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="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="491.029" 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="2.732" 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="/" />
<URSI ID="92" Val="388.960" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.350" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.315" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="164.448" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="58.295" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="89.744" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="186.080" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.670" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="105">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 330.000 330.000 330.000 330.000 332.500 335.000 335.000 337.500 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 348.333 351.667 355.000 355.000 355.000 357.500 360.000 360.000 360.000 362.184 364.368 366.551 368.735 370.919 373.103 375.287 377.471 379.654 381.838 384.022 386.206 388.390 390.574 392.757 394.941 397.125 399.309 401.493 403.676 405.860 408.044 410.228 412.412 414.596 416.779 418.963 421.147 423.331 425.515 427.699 429.882 432.066 434.250 436.434 438.618 440.801 442.985 445.169 447.353 449.537 451.721 453.904 456.088 458.272 460.456 462.640 464.823 467.007 469.191 471.375 473.559 475.743 477.926 480.110 482.294 484.478 486.662 488.846 491.029 494.619 498.549 502.868 507.639 515.000 520.000 525.000 535.000 540.000 550.000 565.000 575.000 595.000 615.000 635.000 670.000 710.000 769.243
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 69 72 0 0 69 0 63 0 72 72 72 72 75 72 69 0 0 69 51 72 66 72 75 72 0 57 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 0.390625 -0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 -1.171875 0.390625 1.953125 2.734375 -1.953125 -1.171875 -0.390625 -1.953125 -0.390625 2.734375 -0.390625 1.953125 0.390625 0.390625 -0.390625 1.171875 1.953125 -0.390625 -2.734375 1.953125 -1.953125 -2.734375 2.734375 2.734375 -1.171875 0.390625 -1.171875 1.953125 -1.953125 2.734375 2.734375 0.390625 1.171875 -0.390625 1.953125 -0.390625 -2.734375 1.953125 -1.171875 -1.953125 -0.390625 -1.953125 0.390625 -2.734375 1.953125 1.171875 -1.953125 0.390625 -2.734375 0.390625 -2.734375 -0.390625
</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 95.0 100.0 105.0 110.0 114.451 115.0 118.901 120.0 123.352 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 388.96 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.835 2.365 2.643 2.732 2.609 2.609 2.609 2.639 2.732 2.779 2.928 3.083 3.243 3.406 3.571 3.738 3.906 4.074 4.243 4.412 4.582 4.752 4.924 5.096 5.269 5.443 5.619 5.795 5.974 6.153 6.335 6.518 6.702 6.888 7.076 7.265 7.455 7.646 7.839 8.031 8.225 8.418 8.61 8.801 8.99 9.177 9.36 9.539 9.712 9.879 10.039 10.191 10.333 10.465 10.585 10.694 10.789 10.87 10.937 10.988 11.024 11.045 11.05 11.05 11.045 11.034 11.017 10.994 10.965 10.93 10.891 10.846 10.797 10.743 10.685 10.623 10.557 10.488 10.415 10.339 10.259 10.178 10.093 10.006 9.917 9.826 9.733 9.638 9.542 9.444 9.345 9.245 9.144 9.042 8.939 8.835 8.732 8.627 8.522 8.418 8.312 8.207 8.102 7.997 7.892 7.788 7.684 7.58 7.476 7.373 7.271 7.169 7.068 6.967 6.868 6.768 6.67 6.573 6.476 6.38 6.285 6.191 6.098 6.006 5.915 5.824 5.735 5.647 5.559 5.473 5.388 5.304 5.22 5.138 5.057 4.977 4.898 4.82 4.743 4.666 4.591 4.517 4.444 4.373 4.302 4.232 4.163 4.095 4.028 3.962 3.897 3.832 3.769 3.707 3.646 3.585 3.526 3.467 3.41 3.353 3.297 3.242 3.188 3.135 3.082 3.03 2.98 2.929 2.88 2.832 2.784 2.737 2.691 2.646 2.601 2.557 2.514 2.471 2.429 2.388 2.347 2.308 2.268 2.23 2.192 2.155

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.732" PeakHeight="110.0" Num="3" Error="0.0">
-29.953 12.351 -2.805
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.732" EndFrequency="11.05" PeakHeight="388.96" Num="5" zHalfNm="269.35" Error="2.775">
-249.554 -23.534 7.614 0.788 -0.922
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.352" Depth="0.123"/>
<TopsideChapman PeakHeight="388.96" PeakDensity="1514919.4" PeakScaleHeight="89.744" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
