<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-15 -046 22:20:00.000"
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 44 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% PACIFIC flags: Moderate F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2</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" >
2026.02.15 (046) 22:20:00</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">
FF202604602152220009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.473" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.029" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="405.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="405.000" 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="0.550" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="550.000" 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="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="473.452" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="418.445" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.771" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="85.027" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.060" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="40.657" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="102.930" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.100" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="103">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
405.000 420.000 422.500 425.000 425.000 425.000 426.667 428.333 430.000 430.000 430.000 431.250 432.500 433.750 435.000 440.000 445.000 443.333 441.667 440.000 440.000 442.000 444.000 446.000 448.000 450.000 452.000 454.000 456.000 458.000 460.000 460.000 457.500 455.000 452.500 450.000 445.000 447.500 450.000 455.000 455.000 460.000 470.000 472.500 475.000 480.000 483.333 486.667 490.000 515.000 515.000 525.000 526.667 528.333 530.000 529.250 528.500 527.750 527.000 526.250 525.500 524.750 524.000 523.250 522.500 521.750 521.000 520.250 519.500 518.750 518.000 517.250 516.500 515.750 515.000 530.000 535.000 540.000 560.000 557.273 554.545 551.818 549.091 546.364 543.636 540.909 538.182 535.455 532.727 530.000 535.000 535.000 535.000 535.000 535.000 535.000 540.000 545.000 550.000 557.662 569.041 587.707 623.957
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 57 0 60 0 0 0 57 51 63 63 0 0 57 60 0 60 57 0 54 57 51 48 0 0 60 66 63 60 0 63 63 0 0 63 60 60 0 66 60 60 60 54 60 57 63 0 0 57 54 51 51 54 0 48 0 0 0 54 0 0 0 0 0 0 54 0 0 0 0 0 0 0 57 57 54 0 48 48 0 0 0 0 51 0 0 0 0 0 63 63 63 69 0 63 54 69 63 0 54 57 48 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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -0.390625 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -1.171875 -1.953125 -1.953125 0.390625 -2.734375 -1.953125 -2.734375 1.953125 -2.734375 -1.171875 -2.734375 -1.171875 2.734375 -2.734375 -2.734375 -2.734375 -1.953125 1.953125 -2.734375 -1.953125 -1.171875 -2.734375 -1.171875 -1.171875 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 1.171875 -2.734375 -2.734375 -1.171875 1.953125 0.390625 -0.390625 -1.171875 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 1.171875
</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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.134 145.0 150.0 155.0 160.0 165.0 170.0 172.267 175.0 180.0 185.0 190.0 195.0 200.0 203.401 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 473.452 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.325 0.3 0.265 0.215 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.214 0.238 0.263 0.288 0.312 0.337 0.354 0.374 0.438 0.503 0.57 0.641 0.714 0.791 0.871 0.954 1.04 1.129 1.221 1.315 1.413 1.513 1.615 1.721 1.829 1.939 2.053 2.169 2.287 2.409 2.533 2.661 2.791 2.924 3.06 3.2 3.343 3.489 3.639 3.793 3.951 4.113 4.279 4.45 4.625 4.805 4.991 5.183 5.38 5.583 5.794 6.011 6.236 6.468 6.708 6.954 7.207 7.46 7.705 7.921 8.067 8.1 8.099 8.08 8.04 7.98 7.903 7.81 7.702 7.583 7.452 7.313 7.166 7.012 6.853 6.69 6.524 6.356 6.186 6.016 5.846 5.677 5.509 5.343 5.178 5.016 4.857 4.701 4.547 4.398 4.251 4.108 3.968 3.833 3.7 3.572 3.447 3.326 3.208 3.094 2.984 2.877 2.774 2.674 2.577 2.483 2.393 2.305 2.221 2.139 2.061 1.985 1.912 1.841 1.773 1.707 1.644 1.583 1.524 1.467 1.412 1.36 1.309 1.26 1.213 1.168 1.124 1.082 1.041 1.002 0.965 0.928 0.894 0.86 0.828 0.797 0.767 0.738 0.71 0.683 0.658 0.633 0.609 0.586 0.564 0.543 0.523 0.503 0.484 0.466 0.448 0.431 0.415 0.399 0.384 0.37 0.356 0.343 0.33 0.317 0.305 0.294 0.283 0.272 0.262 0.252 0.242 0.233

</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="8.1" PeakHeight="473.452" Num="5" zHalfNm="418.445" Error="3.555">
-227.207 -76.448 43.002 -11.277 1.879
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="93.401" Depth="0.154"/>
<TopsideChapman PeakHeight="473.452" PeakDensity="814019.9" PeakScaleHeight="40.657" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
