<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 16:20:00.000"
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) 16:20:00</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">
FF202628910161620009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.130" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.261" 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="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="7.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="380.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.299" 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="4.318" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="440.039" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.368" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.491" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="220.469" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="69.252" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="119.218" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="266.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.450" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="93">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 336.667 338.333 340.000 340.000 342.500 345.000 345.000 345.000 347.500 350.000 350.000 352.500 355.000 365.000 365.000 365.000 370.000 370.000 375.000 380.000 380.000 380.000 380.000 384.918 389.836 394.754 399.672 404.590 409.507 414.425 419.343 424.261 429.179 434.097 439.015 443.933 448.851 453.769 458.687 463.604 468.522 473.440 478.358 483.276 488.194 493.112 498.030 502.948 507.866 512.784 517.701 522.619 527.537 532.455 537.373 542.291 547.209 552.127 557.045 561.963 566.881 571.798 576.716 581.634 586.552 591.470 596.388 601.306 606.224 611.142 616.060 620.978 625.895 630.813 635.731 640.649 645.567 650.485 655.403 660.000 670.000 675.000 685.000 695.000 705.000 715.000 730.000 745.000 760.000 780.000 800.000 824.046
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 66 66 0 60 63 57 0 57 57 0 0 54 54 51 60 57 63 57 66 66 63 0 0 0 0 0 0 51 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 1.953125 1.953125 1.953125 -0.390625 -0.390625 1.171875 2.734375 -1.171875 -2.734375 -1.171875 1.953125 -0.390625 2.734375 -2.734375 0.390625 1.171875 -1.953125 -1.171875 -2.734375 -1.171875 -0.390625 1.953125 2.734375 -0.390625 -1.171875 1.171875 1.171875 2.734375 -0.390625 -0.390625 0.390625 -0.390625 -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" >
89.497 90.0 95.0 100.0 105.0 110.0 111.925 113.849 115.0 115.774 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 440.039 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.219 2.855 3.192 3.299 3.177 3.177 3.25 3.299 3.421 3.549 3.67 3.788 3.905 4.022 4.14 4.261 4.384 4.511 4.641 4.775 4.912 5.052 5.195 5.341 5.488 5.635 5.783 5.93 6.076 6.22 6.362 6.502 6.638 6.773 6.904 7.033 7.159 7.283 7.404 7.524 7.64 7.755 7.868 7.979 8.089 8.197 8.303 8.408 8.512 8.615 8.716 8.816 8.916 9.014 9.112 9.208 9.304 9.399 9.493 9.586 9.677 9.768 9.856 9.943 10.028 10.109 10.185 10.256 10.32 10.374 10.415 10.441 10.45 10.45 10.448 10.443 10.434 10.422 10.407 10.389 10.368 10.343 10.316 10.287 10.254 10.219 10.182 10.142 10.101 10.056 10.01 9.962 9.912 9.86 9.807 9.752 9.695 9.637 9.577 9.516 9.454 9.39 9.326 9.26 9.194 9.126 9.058 8.989 8.919 8.848 8.777 8.706 8.633 8.561 8.488 8.414 8.34 8.266 8.192 8.118 8.043 7.968 7.894 7.819 7.744 7.669 7.594 7.52 7.445 7.371 7.297 7.222 7.149 7.075 7.002 6.929 6.856 6.783 6.711 6.639 6.568 6.497 6.426 6.356 6.286 6.217 6.148 6.08 6.012 5.944 5.877 5.811 5.745 5.679 5.614 5.549 5.485 5.422 5.359 5.297 5.235 5.174 5.113 5.052 4.993 4.934 4.875 4.817 4.76 4.703 4.646 4.59 4.535 4.48 4.426 4.373 4.32 4.267 4.215 4.164 4.113 4.062 4.012 3.963 3.914 3.866

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.299" PeakHeight="110.0" Num="3" Error="0.0">
-30.434 13.053 -3.122
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.299" EndFrequency="10.45" PeakHeight="440.039" Num="5" zHalfNm="269.368" Error="5.933">
-293.146 -53.533 33.717 -17.083 5.78
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.774" Depth="0.122"/>
<TopsideChapman PeakHeight="440.039" PeakDensity="1354869.8" PeakScaleHeight="119.218" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
