<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-08 -039 13:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: 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" >
2026.02.08 (039) 13:40:00</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">
FF202603902081340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.462" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.482" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="9.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.000" 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="3.296" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.316" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="363.543" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.551" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.183" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="145.812" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.033" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.002" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="191.500" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.250" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 280.000 290.000 290.000 295.000 300.000 305.000 305.000 308.333 311.667 315.000 318.333 321.667 325.000 325.000 330.000 332.500 335.000 335.000 336.667 338.333 340.000 341.667 343.333 345.000 345.000 345.000 350.000 350.000 350.000 350.000 352.500 355.000 355.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 390.000 390.000 395.000 395.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 425.000 435.000 435.000 440.000 440.000 445.000 450.000 455.000 455.000 460.000 465.000 470.000 475.000 475.000 480.000 485.000 490.000 490.000 495.000 495.000 500.000 505.000 505.000 505.000 515.000 515.000 520.000 520.000 525.000 530.000 534.146 538.680 543.661 549.157 555.253 562.052 569.685 578.313 588.145 599.452 612.594
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 45 48 48 0 0 51 48 0 0 0 0 0 51 54 51 0 48 54 0 0 0 54 0 54 0 51 54 54 54 48 0 54 51 57 54 54 54 57 54 57 57 57 57 51 57 57 57 57 57 57 57 60 57 48 57 51 60 57 60 60 60 60 57 57 57 60 57 57 57 60 60 57 60 60 57 57 57 57 51 57 54 57 57 48 57 51 45 54 51 51 51 51 48 48 48 48 48 48 48 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 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 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" >
89.498 90.0 95.0 100.0 105.0 110.0 111.941 113.882 115.0 115.823 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 363.543 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.217 2.853 3.189 3.296 3.173 3.173 3.244 3.296 3.437 3.589 3.733 3.872 4.01 4.148 4.286 4.427 4.569 4.714 4.861 5.011 5.163 5.317 5.473 5.63 5.789 5.948 6.107 6.267 6.426 6.584 6.742 6.899 7.055 7.209 7.363 7.515 7.667 7.817 7.966 8.115 8.262 8.409 8.555 8.7 8.845 8.99 9.133 9.277 9.419 9.56 9.699 9.835 9.967 10.089 10.199 10.285 10.338 10.35 10.35 10.344 10.33 10.31 10.283 10.25 10.21 10.165 10.114 10.058 9.997 9.932 9.862 9.788 9.711 9.63 9.545 9.458 9.368 9.275 9.18 9.083 8.984 8.883 8.781 8.677 8.572 8.466 8.359 8.252 8.144 8.036 7.927 7.818 7.709 7.6 7.491 7.382 7.273 7.165 7.058 6.951 6.844 6.738 6.633 6.529 6.425 6.322 6.221 6.12 6.02 5.921 5.823 5.726 5.63 5.536 5.442 5.35 5.258 5.168 5.079 4.991 4.905 4.819 4.735 4.652 4.57 4.489 4.41 4.331 4.254 4.178 4.103 4.029 3.957 3.886 3.815 3.746 3.678 3.611 3.545 3.481 3.417 3.354 3.293 3.232 3.173 3.114 3.057 3.0 2.945 2.89 2.836 2.784 2.732 2.681 2.631 2.582 2.534 2.486 2.44 2.394 2.349 2.305 2.262 2.22 2.178 2.137 2.097 2.057 2.019 1.981 1.943 1.907 1.871 1.835 1.801 1.767 1.733 1.7 1.668 1.637 1.606 1.575 1.545 1.516 1.487 1.459

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.296" PeakHeight="110.0" Num="3" Error="0.0">
-30.432 13.05 -3.12
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.296" EndFrequency="10.35" PeakHeight="363.543" Num="5" zHalfNm="248.551" Error="4.296">
-207.428 -59.324 24.491 -8.405 2.946
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.823" Depth="0.123"/>
<TopsideChapman PeakHeight="363.543" PeakDensity="1329063.2" PeakScaleHeight="81.002" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
