<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-27 -300 13:20:00.000"
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="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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.10.27 (300) 13:20:00</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">
FF202630010271320009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="6.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.997" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.827" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.600" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="386.500" 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="3.321" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.329" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="266.389" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="177.726" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.209" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="91.372" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.576" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.095" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="162.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="37">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 366.667 368.333 370.000 371.659 373.490 375.521 377.789 380.335 383.216 386.500 390.281 394.679 399.859 406.050 413.581 422.937 434.875
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 63 72 63 63 60 60 60 60 63 66 66 66 69 66 66 66 66 63 66 0 0 66 66 69 69 69 66 72 72 72 75 72 69 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 -2.734375 -0.390625 2.734375
</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" >
89.493 90.0 95.0 100.0 105.0 110.0 111.833 113.667 115.0 115.5 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 266.389 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.234 2.874 3.213 3.321 3.198 3.198 3.287 3.321 3.479 3.648 3.802 3.944 4.076 4.199 4.317 4.43 4.54 4.647 4.753 4.858 4.962 5.066 5.171 5.277 5.385 5.495 5.607 5.723 5.842 5.965 6.094 6.228 6.367 6.51 6.653 6.787 6.893 6.947 6.95 6.947 6.936 6.916 6.887 6.851 6.807 6.757 6.701 6.638 6.571 6.499 6.422 6.342 6.258 6.171 6.082 5.99 5.896 5.8 5.703 5.605 5.506 5.406 5.306 5.206 5.106 5.005 4.905 4.806 4.707 4.609 4.511 4.415 4.319 4.225 4.131 4.039 3.948 3.859 3.771 3.684 3.599 3.515 3.432 3.351 3.272 3.194 3.117 3.042 2.968 2.896 2.826 2.757 2.689 2.623 2.558 2.494 2.432 2.372 2.313 2.255 2.198 2.143 2.089 2.036 1.985 1.935 1.886 1.838 1.791 1.745 1.701 1.657 1.615 1.574 1.533 1.494 1.456 1.418 1.382 1.346 1.312 1.278 1.245 1.213 1.182 1.151 1.121 1.092 1.064 1.037 1.01 0.984 0.958 0.933 0.909 0.885 0.862 0.84 0.818 0.797 0.776 0.756 0.737 0.717 0.699 0.681 0.663 0.646 0.629 0.612 0.597 0.581 0.566 0.551 0.537 0.523 0.509 0.496 0.483 0.47 0.458 0.446 0.435 0.423 0.412 0.402 0.391 0.381 0.371 0.361 0.352 0.343 0.334 0.325 0.317 0.308 0.3 0.292 0.285 0.277 0.27 0.263 0.256 0.25 0.243 0.237

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.321" PeakHeight="110.0" Num="3" Error="0.0">
-30.451 13.077 -3.133
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.321" EndFrequency="6.95" PeakHeight="266.389" Num="5" zHalfNm="177.726" Error="3.535">
-117.572 -47.699 13.875 1.907 -1.4
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.5" Depth="0.123"/>
<TopsideChapman PeakHeight="266.389" PeakDensity="599286.6" PeakScaleHeight="59.095" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
