<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 18:20:00.000"
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="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" >
2026.10.12 (285) 18:20:00</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">
FF202628510121820009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.524" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.635" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="496.938" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.860" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="377.513" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="265.141" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.234" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="151.722" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.525" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.118" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="182.310" 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="105">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.75 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 10.85 10.9 10.95
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 360.000 365.000 365.000 367.246 369.492 371.738 373.984 376.230 378.477 380.723 382.969 385.215 387.461 389.707 391.953 394.199 396.445 398.691 400.937 403.184 405.430 407.676 409.922 412.168 414.414 416.660 418.906 421.152 423.398 425.644 427.891 430.137 432.383 434.629 436.875 439.121 441.367 443.613 445.859 448.105 450.351 452.598 454.844 457.090 459.336 461.582 463.828 466.074 468.320 470.566 472.812 475.058 477.305 479.551 481.797 484.043 486.289 488.535 490.781 493.027 496.938 501.206 505.883 510.000 515.000 525.000 530.000 540.000 545.000 555.000 570.000 585.000 600.000 620.000 645.000 674.397
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 72 72 72 0 75 75 72 69 72 75 75 69 75 75 75 72 75 75 72 72 72 75 75 69 72 72 72 69 72 60 66 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 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 1.953125 -0.390625 2.734375 0.390625 0.390625 -2.734375 -1.171875 1.171875 -2.734375 -0.390625 -1.953125 -1.171875 -1.953125 -0.390625 -1.953125 1.171875 -1.171875 -2.734375 2.734375 0.390625 0.390625 -2.734375 0.390625 -2.734375 2.734375 1.171875 -1.953125 1.171875 -2.734375 -1.171875 -2.734375 -1.953125 1.953125 -2.734375 1.953125 -1.171875 -2.734375 -1.171875 -1.953125 -1.171875 1.953125 0.390625 -2.734375 0.390625 1.953125 2.734375 2.734375 2.734375 -1.171875 2.734375 1.171875 -2.734375 -1.953125 -0.390625 1.953125 0.390625 2.734375 -1.171875 0.390625 2.734375 1.171875 -2.734375 -2.734375 1.953125 1.171875 -2.734375 1.953125 -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" >
89.57 90.0 95.0 100.0 105.0 110.0 113.852 115.0 117.704 120.0 121.556 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.513 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.922 2.476 2.767 2.86 2.738 2.738 2.738 2.811 2.86 2.98 3.151 3.318 3.484 3.648 3.811 3.974 4.136 4.298 4.461 4.624 4.788 4.952 5.118 5.284 5.451 5.62 5.789 5.96 6.132 6.306 6.48 6.656 6.834 7.012 7.192 7.373 7.555 7.738 7.921 8.106 8.291 8.476 8.661 8.846 9.029 9.212 9.392 9.568 9.741 9.909 10.071 10.225 10.369 10.502 10.621 10.725 10.812 10.878 10.924 10.947 10.95 10.949 10.941 10.927 10.905 10.876 10.841 10.8 10.753 10.701 10.643 10.581 10.514 10.442 10.367 10.287 10.204 10.118 10.029 9.936 9.841 9.744 9.645 9.543 9.44 9.335 9.229 9.121 9.012 8.903 8.792 8.681 8.57 8.458 8.346 8.233 8.121 8.008 7.896 7.784 7.672 7.561 7.45 7.34 7.23 7.121 7.012 6.905 6.798 6.692 6.587 6.483 6.38 6.278 6.177 6.077 5.978 5.88 5.783 5.687 5.593 5.499 5.407 5.316 5.226 5.138 5.05 4.964 4.879 4.795 4.713 4.631 4.551 4.472 4.394 4.317 4.241 4.167 4.093 4.021 3.95 3.88 3.811 3.743 3.677 3.611 3.547 3.483 3.421 3.359 3.299 3.24 3.181 3.124 3.067 3.012 2.957 2.904 2.851 2.799 2.749 2.699 2.649 2.601 2.554 2.507 2.461 2.416 2.372 2.329 2.286 2.244 2.203 2.163 2.123 2.084 2.046 2.008 1.971 1.935 1.899 1.864 1.83 1.796 1.763 1.73

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.86" PeakHeight="110.0" Num="3" Error="0.0">
-30.075 12.526 -2.881
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.86" EndFrequency="10.95" PeakHeight="377.513" Num="5" zHalfNm="265.141" Error="2.019">
-231.018 -37.945 13.993 -1.037 0.05
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.556" Depth="0.122"/>
<TopsideChapman PeakHeight="377.513" PeakDensity="1487624.1" PeakScaleHeight="83.118" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
