<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-03 -034 14:40:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</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" >
2026.02.03 (034) 14:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" 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">
FF202603402031440009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="8.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.666" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.130" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="445.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="445.000" 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="7.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" 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="3.367" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.349" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="306.061" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="189.576" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.414" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="147.597" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.872" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.178" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="180.080" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
445.000 455.000 460.000 465.000 470.000 476.264 483.162 490.794 499.286 508.790 519.499 531.658 545.582 561.687
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 48 51 51 0 48 51 0 48 45 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 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" >
89.487 90.0 95.0 100.0 105.0 110.0 111.648 113.295 114.943 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 306.061 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.265 2.914 3.257 3.367 3.244 3.244 3.367 3.369 3.536 3.693 3.848 4.004 4.165 4.33 4.501 4.676 4.854 5.033 5.211 5.386 5.557 5.723 5.882 6.036 6.185 6.328 6.466 6.6 6.729 6.855 6.977 7.096 7.212 7.325 7.436 7.544 7.649 7.751 7.849 7.943 8.032 8.114 8.185 8.243 8.282 8.299 8.3 8.298 8.291 8.278 8.259 8.235 8.207 8.174 8.136 8.095 8.049 8.0 7.947 7.891 7.831 7.769 7.704 7.637 7.567 7.495 7.422 7.346 7.269 7.191 7.111 7.03 6.948 6.865 6.781 6.696 6.611 6.526 6.44 6.354 6.268 6.182 6.096 6.01 5.924 5.838 5.752 5.667 5.583 5.498 5.415 5.331 5.249 5.167 5.086 5.005 4.925 4.846 4.767 4.69 4.613 4.537 4.462 4.388 4.314 4.242 4.17 4.1 4.03 3.961 3.893 3.826 3.76 3.695 3.631 3.567 3.505 3.443 3.383 3.323 3.264 3.206 3.15 3.093 3.038 2.984 2.93 2.878 2.826 2.775 2.725 2.676 2.627 2.58 2.533 2.487 2.442 2.397 2.353 2.31 2.268 2.226 2.186 2.145 2.106 2.067 2.029 1.992 1.955 1.919 1.884 1.849 1.815 1.781 1.748 1.716 1.684 1.653 1.622 1.592 1.562 1.533 1.505 1.477 1.449 1.422 1.396 1.37 1.344 1.319 1.294 1.27 1.247 1.223 1.2 1.178 1.156 1.134 1.113 1.092 1.072 1.052 1.032 1.013 0.994 0.975

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.367" PeakHeight="110.0" Num="3" Error="0.0">
-30.484 13.127 -3.156
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.367" EndFrequency="8.3" PeakHeight="306.061" Num="5" zHalfNm="189.576" Error="4.961">
-175.722 -25.891 16.169 -8.158 2.484
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.943" Depth="0.123"/>
<TopsideChapman PeakHeight="306.061" PeakDensity="854714.6" PeakScaleHeight="82.178" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
