<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 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" >
2026.10.12 (285) 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">
FF202628510122040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.342" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.703" 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="10.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="556.248" 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="1.255" 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="438.947" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="325.583" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="162.008" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.483" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.935" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.860" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="95">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 350.000 355.000 355.000 355.000 355.000 365.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 400.000 400.000 400.000 405.000 405.000 405.000 407.909 410.817 413.726 416.634 419.543 422.452 425.360 428.269 431.178 434.086 436.995 439.903 442.812 445.721 448.629 451.538 454.446 457.355 460.264 463.172 466.081 468.989 471.898 474.807 477.715 480.624 483.533 486.441 489.350 492.258 495.167 498.076 500.984 503.893 506.801 509.710 512.619 515.527 518.436 521.344 524.253 527.162 530.070 532.979 535.888 538.796 541.705 544.613 547.522 550.431 553.339 556.248 559.156 564.129 570.000 575.000 580.000 590.000 600.000 610.000 620.000 630.000 645.000 665.000 685.000 710.000 743.317
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 75 66 0 0 75 60 69 75 75 75 78 75 78 75 78 72 78 75 75 75 75 66 75 75 72 75 72 0 0 69 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" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 -1.171875 1.953125 0.390625 -2.734375 -1.953125 -0.390625 1.953125 -1.953125 -2.734375 2.734375 1.171875 0.390625 -1.953125 0.390625 2.734375 0.390625 0.390625 -1.171875 -2.734375 -0.390625 2.734375 -0.390625 -0.390625 1.171875 1.953125 0.390625 -1.953125 -0.390625 -1.953125 1.953125 0.390625 2.734375 1.953125 2.734375 1.953125 -2.734375 0.390625 -2.734375 0.390625 2.734375 1.171875 1.953125 1.953125 -2.734375 1.171875 1.953125 1.953125 -0.390625 2.734375 -1.953125 0.390625 -0.390625 -2.734375 -2.734375 -0.390625 -1.171875 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" >
90.065 95.0 100.0 105.0 110.0 115.0 120.0 123.309 125.0 130.0 135.0 136.618 140.0 145.0 149.927 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 438.947 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.837 1.087 1.215 1.255 1.233 1.166 1.093 1.093 1.093 1.093 1.093 1.134 1.195 1.255 1.257 1.36 1.464 1.571 1.681 1.796 1.917 2.043 2.177 2.317 2.465 2.621 2.784 2.954 3.131 3.314 3.504 3.698 3.896 4.098 4.303 4.51 4.718 4.929 5.139 5.351 5.562 5.774 5.985 6.195 6.405 6.614 6.821 7.028 7.233 7.436 7.638 7.837 8.035 8.229 8.42 8.608 8.792 8.972 9.146 9.315 9.478 9.633 9.779 9.916 10.043 10.159 10.261 10.35 10.423 10.481 10.521 10.544 10.55 10.55 10.545 10.533 10.514 10.489 10.457 10.42 10.377 10.329 10.276 10.218 10.156 10.089 10.019 9.944 9.867 9.786 9.702 9.615 9.525 9.434 9.34 9.244 9.146 9.047 8.946 8.844 8.741 8.637 8.532 8.426 8.32 8.214 8.107 7.999 7.892 7.785 7.678 7.571 7.464 7.357 7.251 7.146 7.04 6.936 6.832 6.729 6.626 6.525 6.424 6.324 6.225 6.126 6.029 5.933 5.838 5.743 5.65 5.558 5.467 5.377 5.288 5.2 5.114 5.028 4.944 4.86 4.778 4.697 4.617 4.538 4.46 4.384 4.308 4.234 4.161 4.088 4.017 3.947 3.878 3.81 3.744 3.678 3.613 3.549 3.487 3.425 3.364 3.305 3.246 3.188 3.131 3.075 3.02 2.966 2.913 2.861 2.81 2.759 2.71 2.661 2.613 2.566 2.52 2.474 2.429 2.385 2.342 2.3 2.258 2.217 2.177 2.137

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.255" PeakHeight="110.0" Num="3" Error="0.0">
-27.462 9.079 -1.552
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.255" EndFrequency="10.55" PeakHeight="438.947" Num="5" zHalfNm="325.583" Error="3.412">
-282.141 -13.497 10.566 -6.103 2.155
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="39.927" Depth="0.162"/>
<TopsideChapman PeakHeight="438.947" PeakDensity="1380924.4" PeakScaleHeight="83.935" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
