<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-09 -282 20:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2o cusp not found, 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" >
2026.10.09 (282) 20:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628210092040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.399" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.908" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.943" 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="1.268" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="418.968" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="309.078" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="156.767" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.024" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.426" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="157.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="101">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 326.250 327.500 328.750 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 365.000 365.000 366.667 368.333 370.000 371.667 373.333 375.000 378.191 381.382 384.574 387.765 390.956 394.147 397.338 400.530 403.721 406.912 410.103 413.295 416.486 419.677 422.868 426.059 429.251 432.442 435.633 438.824 442.015 445.207 448.398 451.589 454.780 457.971 461.163 464.354 467.545 470.736 473.927 477.119 480.310 483.501 486.692 489.884 493.075 496.266 499.457 502.648 505.840 509.031 512.222 515.413 518.604 521.796 524.987 528.178 531.369 534.560 537.752 540.943 545.000 550.000 560.000 565.000 575.000 580.000 590.000 605.000 615.000 630.000 645.000 660.000 685.000 708.865
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 69 81 0 0 0 75 63 0 78 84 75 66 75 75 81 81 84 84 69 75 72 75 72 78 66 72 81 0 0 69 0 0 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
</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 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 1.171875 -2.734375 2.734375 1.953125 -0.390625 1.953125 -1.953125 -1.953125 1.953125 1.953125 1.171875 -1.171875 1.171875 -1.171875 1.171875 0.390625 0.390625 -2.734375 -0.390625 -1.953125 -1.171875 1.953125 -1.171875 -1.953125 0.390625 2.734375 0.390625 -1.953125 2.734375 -1.171875 -1.171875 1.953125 1.171875 -2.734375 -1.171875 -2.734375 1.953125 2.734375 -1.953125 2.734375 2.734375 0.390625 -0.390625 2.734375 -1.953125 -1.953125 0.390625 1.953125 -1.171875 0.390625 0.390625 2.734375 1.953125 -1.953125 -1.171875 -2.734375 2.734375 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.057 95.0 100.0 105.0 110.0 115.0 120.0 123.185 125.0 130.0 135.0 136.37 140.0 145.0 149.555 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 418.968 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.846 1.099 1.227 1.268 1.246 1.178 1.107 1.107 1.107 1.107 1.107 1.151 1.212 1.268 1.279 1.399 1.515 1.631 1.751 1.875 2.005 2.143 2.289 2.445 2.612 2.789 2.977 3.175 3.385 3.603 3.83 4.064 4.303 4.547 4.793 5.04 5.288 5.536 5.783 6.029 6.272 6.514 6.752 6.989 7.222 7.452 7.678 7.901 8.12 8.335 8.545 8.751 8.951 9.145 9.332 9.513 9.685 9.849 10.003 10.147 10.279 10.398 10.504 10.595 10.671 10.729 10.771 10.794 10.8 10.8 10.794 10.781 10.761 10.733 10.7 10.659 10.613 10.561 10.504 10.441 10.374 10.302 10.226 10.146 10.062 9.975 9.885 9.792 9.696 9.598 9.498 9.395 9.291 9.185 9.078 8.969 8.859 8.749 8.637 8.525 8.413 8.3 8.187 8.074 7.961 7.847 7.734 7.622 7.509 7.398 7.286 7.175 7.065 6.956 6.847 6.74 6.633 6.527 6.422 6.317 6.214 6.112 6.011 5.912 5.813 5.715 5.619 5.524 5.43 5.337 5.245 5.155 5.066 4.978 4.891 4.805 4.721 4.638 4.556 4.475 4.396 4.317 4.24 4.165 4.09 4.016 3.944 3.873 3.803 3.734 3.666 3.599 3.534 3.469 3.406 3.344 3.282 3.222 3.163 3.105 3.047 2.991 2.936 2.882 2.828 2.776 2.724 2.674 2.624 2.575 2.527 2.48 2.434 2.389 2.344 2.3 2.257 2.215 2.174 2.133 2.093 2.054 2.015 1.977 1.94 1.904

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.268" PeakHeight="110.0" Num="3" Error="0.0">
-27.501 9.126 -1.568
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.268" EndFrequency="10.8" PeakHeight="418.968" Num="5" zHalfNm="309.078" Error="4.827">
-268.528 -3.74 5.386 -5.2 2.669
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="39.555" Depth="0.161"/>
<TopsideChapman PeakHeight="418.968" PeakDensity="1447146.4" PeakScaleHeight="81.426" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
