<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-13 -044 22:00:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 80% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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) 22:00:00</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">
FF202604402132200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.489" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.283" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="365.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="365.000" 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="8.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="551.311" 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="0.409" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="440.965" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="380.681" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.910" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="90.370" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="16.300" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="44.887" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="100.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
365.000 375.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 382.500 385.000 385.714 386.429 387.143 387.857 388.571 389.286 390.000 390.000 390.000 390.000 390.000 390.000 391.250 392.500 393.750 395.000 395.000 396.667 398.333 400.000 401.667 403.333 405.000 406.667 408.333 410.000 410.000 410.000 410.000 415.000 420.000 425.000 425.000 425.000 425.000 430.000 432.500 435.000 435.000 440.000 440.000 440.000 440.000 438.333 436.667 435.000 445.000 446.250 447.500 448.750 450.000 455.000 455.000 455.000 455.000 455.000 450.000 460.000 465.000 470.000 471.667 473.333 475.000 475.000 477.143 479.286 481.429 483.571 485.714 487.857 490.000 490.000 490.000 495.000 495.000 495.000 500.000 500.000 505.000 507.500 510.000 512.500 515.000 520.000 520.000 525.000 525.000 525.000 530.000 535.000 535.000 540.000 540.000 545.000 551.311 558.652 567.298 577.632
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 63 57 63 63 0 54 63 0 66 66 66 0 69 0 0 0 0 0 0 75 78 0 0 63 69 0 0 0 60 0 0 0 0 0 0 0 0 0 57 0 0 60 0 0 51 54 51 57 60 0 48 54 48 51 60 0 0 0 54 0 0 0 0 66 57 51 60 0 57 60 57 57 48 0 0 48 54 0 0 57 0 51 48 54 63 69 63 54 66 66 63 60 0 0 0 63 54 63 60 60 60 66 57 63 60 63 60 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.171875 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.171875 -2.734375 -2.734375 -2.734375 -2.734375 0.390625 1.171875 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 0.390625 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 2.734375 -1.953125 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.549 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.188 140.0 145.0 150.0 155.0 160.0 165.0 168.376 170.0 175.0 180.0 185.0 190.0 195.0 197.564 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 440.965 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.27 0.354 0.396 0.409 0.404 0.39 0.366 0.328 0.272 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.212 0.247 0.283 0.319 0.355 0.391 0.409 0.452 0.529 0.602 0.676 0.751 0.83 0.912 0.998 1.089 1.184 1.284 1.389 1.499 1.614 1.735 1.861 1.992 2.129 2.271 2.418 2.57 2.728 2.891 3.059 3.233 3.412 3.596 3.785 3.98 4.181 4.386 4.597 4.813 5.035 5.262 5.494 5.73 5.971 6.216 6.463 6.711 6.958 7.2 7.433 7.65 7.842 7.997 8.103 8.149 8.15 8.144 8.119 8.077 8.02 7.948 7.863 7.766 7.659 7.543 7.419 7.288 7.151 7.009 6.863 6.714 6.563 6.41 6.255 6.1 5.945 5.791 5.637 5.485 5.333 5.184 5.037 4.892 4.749 4.609 4.471 4.337 4.205 4.076 3.95 3.827 3.707 3.59 3.476 3.366 3.258 3.153 3.051 2.952 2.856 2.763 2.672 2.584 2.499 2.417 2.337 2.259 2.184 2.111 2.041 1.972 1.906 1.842 1.78 1.721 1.663 1.607 1.552 1.5 1.449 1.4 1.353 1.307 1.263 1.22 1.178 1.138 1.1 1.062 1.026 0.991 0.958 0.925 0.893 0.863 0.834 0.805 0.778 0.751 0.726 0.701 0.677 0.654 0.632 0.61 0.589 0.569 0.55 0.531 0.513 0.495 0.478 0.462 0.446 0.431 0.416 0.402 0.388 0.375 0.362 0.35 0.338 0.326 0.315 0.304 0.294 0.284 0.274

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.409" PeakHeight="110.0" Num="3" Error="0.0">
-20.449 3.232 -0.234
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.409" EndFrequency="8.15" PeakHeight="440.965" Num="5" zHalfNm="380.681" Error="3.525">
-214.811 -48.975 23.679 -5.125 1.831
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="87.564" Depth="0.209"/>
<TopsideChapman PeakHeight="440.965" PeakDensity="824100.5" PeakScaleHeight="44.887" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
