<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-27 -300 14:00:00.000"
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 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) 14:00:00</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">
FF202630010271400009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.791" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.238" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.650" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="436.264" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.373" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.353" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="294.521" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="194.569" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.438" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="113.453" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="20.120" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.877" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="176.030" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="48">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.9 4.95 5.0 5.05 5.1 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 7.0 7.05 7.1 7.15 7.2 7.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 357.500 360.000 365.000 365.000 370.000 375.000 377.500 380.000 380.000 385.000 390.000 395.000 400.000 405.000 410.000 415.000 420.000 425.000 430.000 436.264 443.162 450.794 459.286 468.790 479.499 491.658 505.582
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 63 0 0 0 0 0 60 63 63 63 63 60 63 66 66 66 66 66 69 66 0 69 66 69 69 63 0 66 63 66 63 63 63 63 63 63 66 66 66 0 63 63 63 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 0.390625 -0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 1.953125
</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" >
89.486 90.0 95.0 100.0 105.0 110.0 111.621 113.242 114.863 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 294.521 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.269 2.919 3.263 3.373 3.25 3.25 3.373 3.378 3.54 3.672 3.79 3.9 4.006 4.109 4.211 4.311 4.412 4.512 4.613 4.715 4.818 4.923 5.028 5.136 5.245 5.356 5.469 5.585 5.702 5.821 5.943 6.066 6.19 6.316 6.442 6.568 6.692 6.812 6.927 7.032 7.122 7.193 7.237 7.25 7.25 7.246 7.235 7.218 7.195 7.165 7.131 7.091 7.047 6.998 6.945 6.888 6.828 6.764 6.697 6.627 6.555 6.481 6.404 6.326 6.245 6.164 6.081 5.997 5.912 5.826 5.74 5.653 5.566 5.479 5.392 5.305 5.217 5.13 5.044 4.958 4.872 4.786 4.702 4.618 4.535 4.452 4.37 4.289 4.21 4.13 4.052 3.975 3.899 3.824 3.75 3.677 3.605 3.534 3.464 3.395 3.327 3.261 3.195 3.131 3.067 3.005 2.944 2.884 2.825 2.767 2.71 2.654 2.599 2.545 2.492 2.44 2.389 2.339 2.29 2.242 2.195 2.148 2.103 2.059 2.015 1.972 1.931 1.89 1.849 1.81 1.771 1.734 1.697 1.66 1.625 1.59 1.556 1.523 1.49 1.458 1.427 1.396 1.366 1.337 1.308 1.28 1.252 1.225 1.199 1.173 1.147 1.123 1.098 1.075 1.051 1.029 1.006 0.984 0.963 0.942 0.922 0.902 0.882 0.863 0.844 0.826 0.808 0.791 0.774 0.757 0.74 0.724 0.708 0.693 0.678 0.663 0.649 0.635 0.621 0.607 0.594 0.581 0.569 0.556 0.544 0.532

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.373" PeakHeight="110.0" Num="3" Error="0.0">
-30.488 13.133 -3.159
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.373" EndFrequency="7.25" PeakHeight="294.521" Num="5" zHalfNm="194.569" Error="6.217">
-145.067 -45.493 8.8 1.607 0.495
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.863" Depth="0.123"/>
<TopsideChapman PeakHeight="294.521" PeakDensity="652140.2" PeakScaleHeight="70.877" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
