<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-25 -298 17:00:00.000"
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="14.0">
<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" >
2026.10.25 (298) 17:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629810251700009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.610" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.879" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="435.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="435.000" 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="10.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.183" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.263" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="338.549" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="226.037" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.799" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="151.600" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.675" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.781" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.520" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.720" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="30">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.35 11.4 11.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
435.000 440.000 442.500 445.000 445.000 445.000 450.000 450.000 455.000 455.000 460.000 465.000 465.000 470.000 475.000 475.000 480.000 485.000 490.000 490.000 495.000 505.000 510.000 520.000 530.000 540.000 555.000 575.000 600.000 635.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 60 0 54 0 0 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 39 0 48
</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 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" >
89.516 90.0 95.0 100.0 105.0 110.0 112.416 114.832 115.0 117.248 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 338.549 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.14 2.755 3.079 3.183 3.061 3.061 3.069 3.183 3.291 3.483 3.675 3.869 4.068 4.274 4.488 4.709 4.939 5.175 5.416 5.662 5.91 6.158 6.406 6.652 6.895 7.135 7.37 7.601 7.828 8.051 8.269 8.483 8.692 8.897 9.098 9.295 9.488 9.676 9.86 10.039 10.212 10.379 10.54 10.693 10.837 10.971 11.093 11.2 11.291 11.364 11.415 11.444 11.45 11.45 11.443 11.429 11.407 11.377 11.341 11.298 11.249 11.194 11.133 11.067 10.996 10.92 10.839 10.755 10.666 10.574 10.479 10.381 10.28 10.176 10.07 9.962 9.852 9.74 9.627 9.512 9.397 9.28 9.162 9.044 8.925 8.806 8.687 8.567 8.448 8.329 8.209 8.09 7.972 7.854 7.736 7.619 7.503 7.387 7.272 7.159 7.046 6.934 6.822 6.712 6.604 6.496 6.389 6.283 6.179 6.076 5.974 5.873 5.774 5.675 5.578 5.483 5.388 5.295 5.203 5.113 5.024 4.936 4.849 4.763 4.679 4.596 4.515 4.434 4.355 4.277 4.201 4.125 4.051 3.978 3.906 3.835 3.766 3.697 3.63 3.564 3.499 3.435 3.372 3.31 3.25 3.19 3.131 3.074 3.017 2.961 2.907 2.853 2.8 2.748 2.697 2.647 2.598 2.55 2.503 2.456 2.41 2.366 2.322 2.278 2.236 2.194 2.153 2.113 2.073 2.035 1.997 1.959 1.922 1.886 1.851 1.816 1.782 1.749 1.716 1.684 1.652 1.621 1.591 1.561 1.532 1.503

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.183" PeakHeight="110.0" Num="3" Error="0.0">
-30.344 12.921 -3.061
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.183" EndFrequency="11.45" PeakHeight="338.549" Num="5" zHalfNm="226.037" Error="3.099">
-211.16 -17.39 11.315 -5.94 1.874
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.248" Depth="0.122"/>
<TopsideChapman PeakHeight="338.549" PeakDensity="1626581.9" PeakScaleHeight="81.781" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
