<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-13 -044 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="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" >
2026.02.13 (044) 14:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.14" 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">
FF202604402131400009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.450" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.156" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="440.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.336" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.335" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="375.535" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.475" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.257" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="179.963" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.629" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="100.523" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="218.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.520" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="72">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 350.000 350.000 355.000 355.000 355.000 356.667 358.333 360.000 360.000 361.667 363.333 365.000 370.000 370.000 372.000 374.000 376.000 378.000 380.000 380.000 385.000 385.000 390.000 390.000 390.000 395.000 397.500 400.000 405.000 407.500 410.000 410.000 415.000 420.000 420.000 420.000 430.000 430.000 435.000 440.000 440.000 450.000 455.000 460.000 465.000 470.000 470.000 485.000 490.000 490.000 495.000 505.000 515.000 520.000 520.000 525.000 530.000 540.000 545.000 551.512 558.672 566.580 575.362 585.168 596.191 608.672 622.920 639.339 658.467 681.034 708.059
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 51 54 54 51 0 0 48 45 0 0 54 57 57 0 0 0 0 60 66 60 66 57 63 60 60 0 57 45 0 54 63 60 57 66 66 66 66 63 54 54 63 63 51 48 60 66 54 54 63 60 60 48 48 60 60 60 60 57 54 51 54 54 54 54 54 54 54 51 51 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 -1.171875 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 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
</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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.772 113.543 115.0 115.315 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 375.535 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.244 2.887 3.227 3.336 3.213 3.213 3.314 3.336 3.486 3.632 3.77 3.904 4.037 4.168 4.3 4.433 4.566 4.701 4.837 4.974 5.112 5.251 5.39 5.53 5.671 5.811 5.951 6.091 6.23 6.368 6.506 6.642 6.777 6.911 7.044 7.175 7.305 7.434 7.561 7.686 7.81 7.932 8.053 8.171 8.288 8.402 8.514 8.624 8.73 8.832 8.931 9.024 9.111 9.192 9.264 9.327 9.378 9.416 9.441 9.45 9.45 9.448 9.442 9.431 9.417 9.398 9.376 9.349 9.32 9.286 9.25 9.21 9.168 9.122 9.074 9.023 8.97 8.915 8.857 8.797 8.736 8.672 8.607 8.54 8.472 8.402 8.331 8.259 8.186 8.111 8.036 7.96 7.883 7.806 7.728 7.65 7.571 7.491 7.412 7.332 7.252 7.172 7.091 7.011 6.931 6.851 6.771 6.691 6.611 6.532 6.453 6.374 6.295 6.217 6.139 6.062 5.985 5.909 5.833 5.757 5.682 5.608 5.534 5.461 5.389 5.317 5.245 5.175 5.105 5.035 4.966 4.898 4.831 4.764 4.698 4.633 4.568 4.504 4.441 4.378 4.317 4.255 4.195 4.135 4.076 4.018 3.96 3.903 3.847 3.791 3.737 3.682 3.629 3.576 3.524 3.472 3.422 3.371 3.322 3.273 3.225 3.177 3.13 3.084 3.038 2.993 2.949 2.905 2.862 2.819 2.777 2.736 2.695 2.655 2.615 2.576 2.537 2.499 2.461 2.424 2.388 2.352 2.316 2.282 2.247 2.213

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.336" PeakHeight="110.0" Num="3" Error="0.0">
-30.462 13.094 -3.14
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.336" EndFrequency="9.45" PeakHeight="375.535" Num="5" zHalfNm="236.475" Error="4.933">
-237.105 -36.064 15.84 -4.774 1.883
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.315" Depth="0.123"/>
<TopsideChapman PeakHeight="375.535" PeakDensity="1107971.5" PeakScaleHeight="100.523" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
