<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 17:30:00.000"
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" >
2026.10.14 (287) 17:30:00</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">
FF202628710141730009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.406" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.193" 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="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="10.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="562.403" 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="3.093" 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="4.220" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="401.884" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="277.045" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.988" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="167.174" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="63.293" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="92.257" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="204.960" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 360.000 365.000 365.000 365.000 367.597 370.195 372.792 375.390 377.987 380.584 383.182 385.779 388.377 390.974 393.571 396.169 398.766 401.364 403.961 406.558 409.156 411.753 414.351 416.948 419.545 422.143 424.740 427.338 429.935 432.532 435.130 437.727 440.325 442.922 445.519 448.117 450.714 453.312 455.909 458.506 461.104 463.701 466.299 468.896 471.494 474.091 476.688 479.286 481.883 484.481 487.078 489.675 492.273 494.870 497.468 500.065 502.662 505.260 507.857 510.455 513.052 515.649 518.247 520.844 523.442 526.039 528.636 531.234 533.831 536.429 539.026 541.623 544.221 546.818 549.416 552.013 554.610 557.208 559.805 562.403 565.000 570.000 580.000 595.000 611.578 632.763 660.786 699.596 756.903
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 57 63 0 0 0 0 66 69 66 0 0 0 72 72 0 63 72 0 72 57 0 72 75 75 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 57 54 54 54 54 48 0 0 42
</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 2.734375 -1.953125 -2.734375 -1.171875 2.734375 2.734375 0.390625 2.734375 0.390625 -1.171875 -0.390625 0.390625 1.171875 1.171875 1.953125 0.390625 2.734375 1.171875 -1.953125 0.390625 1.171875 -1.953125 0.390625 -2.734375 2.734375 -0.390625 0.390625 -1.953125 -1.171875 -1.953125 2.734375 1.953125 0.390625 1.171875 2.734375 2.734375 0.390625 -2.734375 1.953125 -2.734375 2.734375 -2.734375 -0.390625 -2.734375 -1.953125 -0.390625 2.734375 0.390625 2.734375 -2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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" >
89.53 90.0 95.0 100.0 105.0 110.0 112.806 115.0 115.612 118.418 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 401.884 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.08 2.677 2.992 3.093 2.971 2.971 2.971 3.093 3.144 3.304 3.461 3.616 3.768 3.919 4.069 4.219 4.367 4.515 4.663 4.811 4.96 5.108 5.257 5.407 5.557 5.707 5.859 6.011 6.165 6.319 6.474 6.631 6.788 6.947 7.107 7.268 7.43 7.593 7.757 7.922 8.089 8.256 8.424 8.593 8.762 8.931 9.1 9.269 9.437 9.604 9.77 9.932 10.092 10.248 10.398 10.542 10.678 10.805 10.921 11.025 11.114 11.188 11.244 11.281 11.299 11.3 11.299 11.292 11.278 11.259 11.234 11.204 11.169 11.128 11.083 11.033 10.979 10.921 10.859 10.793 10.724 10.651 10.575 10.497 10.416 10.332 10.246 10.158 10.067 9.975 9.881 9.786 9.689 9.591 9.492 9.391 9.29 9.188 9.086 8.982 8.879 8.775 8.67 8.566 8.461 8.357 8.252 8.148 8.044 7.94 7.836 7.733 7.63 7.528 7.426 7.325 7.224 7.124 7.025 6.926 6.828 6.731 6.635 6.54 6.445 6.351 6.258 6.166 6.075 5.985 5.896 5.808 5.721 5.634 5.549 5.465 5.382 5.299 5.218 5.138 5.058 4.98 4.903 4.826 4.751 4.677 4.603 4.531 4.459 4.389 4.32 4.251 4.183 4.117 4.051 3.986 3.923 3.86 3.798 3.737 3.676 3.617 3.559 3.501 3.444 3.389 3.334 3.279 3.226 3.174 3.122 3.071 3.021 2.971 2.923 2.875 2.828 2.781 2.736 2.691 2.646 2.603 2.56 2.518 2.476 2.435

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.093" PeakHeight="110.0" Num="3" Error="0.0">
-30.272 12.815 -3.013
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.093" EndFrequency="11.3" PeakHeight="401.884" Num="5" zHalfNm="277.045" Error="2.414">
-252.871 -45.641 15.913 -0.748 -0.119
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.418" Depth="0.122"/>
<TopsideChapman PeakHeight="401.884" PeakDensity="1584243.1" PeakScaleHeight="92.257" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
