<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-12 -043 23:00:00.000"
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 33 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Moderate F-spread, F2o cusp not found, 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" >
2026.02.12 (043) 23:00:00</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">
FF202604302122300009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.643" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.540" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" 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="8.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="445.877" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="414.096" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.444" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="49.010" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.636" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="25.507" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="73.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.010" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="122">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 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" >
465.000 465.000 455.000 445.000 435.000 432.500 430.000 427.500 425.000 426.333 427.667 429.000 430.333 431.667 433.000 434.333 435.667 437.000 438.333 439.667 441.000 442.333 443.667 445.000 442.500 440.000 435.000 425.000 431.000 437.000 443.000 449.000 455.000 451.667 448.333 445.000 445.000 444.000 443.000 442.000 441.000 440.000 445.000 450.000 450.000 451.250 452.500 453.750 455.000 455.000 455.000 450.000 450.000 450.000 450.000 450.000 455.000 460.000 458.125 456.250 454.375 452.500 450.625 448.750 446.875 445.000 443.125 441.250 439.375 437.500 435.625 433.750 431.875 430.000 430.000 425.000 425.000 428.077 431.154 434.231 437.308 440.385 443.462 446.538 449.615 452.692 455.769 458.846 461.923 465.000 470.000 470.000 470.000 475.000 477.500 480.000 482.500 485.000 490.000 490.000 492.778 495.556 498.333 501.111 503.889 506.667 509.444 512.222 515.000 514.167 513.333 512.500 511.667 510.833 510.000 510.000 510.000 505.000 510.000 510.000 510.000 520.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 0 51 54 0 0 0 54 0 54 0 0 0 0 0 0 0 0 0 57 0 0 60 0 63 57 54 57 0 0 0 54 0 0 54 54 54 0 0 0 54 57 60 57 0 0 0 0 0 57 54 0 57 0 54 0 51 0 0 0 0 0 0 54 0 0 0 0 0 0 0 0 54 51 57 51 0 0 0 0 0 0 48 0 0 0 0 0 48 48 0 51 48 0 0 0 48 51 48 0 0 0 0 0 0 0 0 48 0 0 0 0 0 51 0 51 48 48 0 48 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 0.390625 -1.171875 -0.390625 0.390625 -1.171875 0.390625 -0.390625 -1.171875 -2.734375 -1.171875 -1.953125 -2.734375 -0.390625 0.390625 1.171875 -0.390625 1.171875 -1.171875 0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 1.171875 0.390625 -0.390625 0.390625 -0.390625 -1.171875 -1.171875 1.953125 -0.390625 -1.171875 0.390625 -0.390625 0.390625 0.390625 0.390625 1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.953125 0.390625 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -2.734375 -0.390625 0.390625 -0.390625 -1.171875 -0.390625 -0.390625 0.390625 2.734375 2.734375 0.390625 2.734375 1.171875 -2.734375 0.390625 -0.390625 -0.390625 0.390625 -0.390625 -1.953125 -0.390625 1.953125 2.734375 -2.734375 -1.171875 -1.171875 -1.953125 0.390625 2.734375 -1.171875 -2.734375 -1.953125 1.953125 -1.953125 -0.390625 1.171875 1.171875 1.953125 -0.390625 -1.171875 -2.734375 1.171875 -2.734375 1.171875 -0.390625 0.390625 1.953125 1.171875 0.390625 -0.390625 0.390625 0.390625 2.734375 -1.953125 1.953125 0.390625 0.390625 -1.171875 1.171875 1.953125 1.171875 2.734375 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="144">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.446 145.0 150.0 155.0 160.0 165.0 170.0 175.0 176.891 180.0 185.0 190.0 195.0 200.0 205.0 210.0 210.337 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 445.877 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.329 0.308 0.279 0.238 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.237 0.26 0.283 0.306 0.329 0.352 0.354 0.414 0.483 0.551 0.617 0.683 0.747 0.811 0.875 0.939 1.005 1.071 1.138 1.207 1.278 1.351 1.426 1.503 1.584 1.667 1.753 1.843 1.938 2.036 2.139 2.248 2.363 2.484 2.613 2.75 2.896 3.054 3.224 3.408 3.608 3.829 4.073 4.345 4.651 4.999 5.396 5.849 6.354 6.884 7.383 7.783 8.042 8.148 8.15 8.13 8.056 7.935 7.774 7.581 7.362 7.123 6.869 6.605 6.335 6.063 5.791 5.521 5.255 4.996 4.743 4.498 4.262 4.035 3.817 3.609 3.41 3.22 3.039 2.867 2.705 2.55 2.404 2.265 2.134 2.01 1.893 1.783 1.679 1.58 1.488 1.4 1.318 1.24 1.167 1.098 1.034 0.972 0.915 0.861 0.81 0.762 0.717 0.674 0.634 0.597 0.561 0.528 0.497 0.467 0.439 0.413 0.389 0.366 0.344 0.324 0.304 0.286 0.269 0.253 0.238 0.224 0.211

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="8.15" PeakHeight="445.877" Num="5" zHalfNm="414.096" Error="8.832">
-174.897 -84.572 16.804 12.026 -4.901
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="100.337" Depth="0.154"/>
<TopsideChapman PeakHeight="445.877" PeakDensity="824100.5" PeakScaleHeight="25.507" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
