<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-22 -081 22:50:00.000"
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 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, 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" >
2026.03.22 (081) 22:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608103222250009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.848" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.637" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="437.186" 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="2.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="370.849" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="327.945" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.182" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="63.758" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.966" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="32.230" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="67.970" 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="121">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 321.429 322.857 324.286 325.714 327.143 328.571 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.556 336.111 336.667 337.222 337.778 338.333 338.889 339.444 340.000 340.000 335.000 336.429 337.857 339.286 340.714 342.143 343.571 345.000 345.000 340.000 342.500 345.000 345.000 350.000 350.000 350.000 350.000 350.000 350.000 350.000 352.500 355.000 355.000 355.000 355.000 355.000 357.500 360.000 360.000 360.000 360.000 360.000 365.000 365.000 366.000 367.000 368.000 369.000 370.000 370.000 365.000 367.500 370.000 372.500 375.000 376.667 378.333 380.000 380.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 387.500 390.000 390.000 392.000 394.000 396.000 398.000 400.000 400.000 400.000 402.500 405.000 405.000 405.000 410.000 410.000 410.000 410.000 415.000 415.000 415.000 420.000 425.000 427.389 430.148 433.371 437.186 441.771 447.386 454.423 463.499 475.652
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 66 0 0 0 0 66 69 66 0 0 0 0 0 0 60 66 0 0 54 72 57 0 0 0 0 0 0 0 0 69 72 69 0 81 0 0 0 0 69 0 51 0 57 0 66 0 0 0 72 54 66 0 72 75 63 72 0 0 0 54 78 78 78 72 72 0 0 0 0 57 60 57 0 69 0 66 0 0 57 63 63 0 72 72 63 57 66 69 0 57 63 0 0 60 0 51 57 57 0 54 0 54 48 57 63 63 66 69 66 69 60 66 54 0 51 0 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 1.953125 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 2.734375 -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 0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 -0.390625 -1.953125 -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 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="149">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.608 145.0 150.0 155.0 160.0 165.0 170.0 175.0 177.215 180.0 185.0 190.0 195.0 200.0 205.0 210.0 210.823 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 370.849 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0
</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 0.239 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.213 0.236 0.259 0.281 0.304 0.327 0.35 0.354 0.434 0.54 0.656 0.783 0.921 1.072 1.236 1.412 1.602 1.806 2.025 2.258 2.507 2.772 3.053 3.35 3.664 3.994 4.342 4.705 5.083 5.474 5.876 6.285 6.696 7.101 7.49 7.85 8.163 8.413 8.579 8.648 8.65 8.636 8.586 8.502 8.389 8.251 8.092 7.914 7.721 7.516 7.303 7.082 6.857 6.629 6.4 6.171 5.944 5.719 5.498 5.281 5.069 4.862 4.66 4.464 4.275 4.091 3.914 3.743 3.578 3.419 3.266 3.12 2.979 2.844 2.715 2.591 2.472 2.358 2.25 2.146 2.046 1.951 1.861 1.774 1.691 1.612 1.537 1.465 1.396 1.331 1.268 1.209 1.152 1.098 1.046 0.997 0.95 0.905 0.863 0.822 0.783 0.746 0.711 0.677 0.645 0.615 0.586 0.558 0.532 0.507 0.483 0.46 0.438 0.417 0.398 0.379 0.361 0.344 0.328 0.312 0.297 0.283 0.27 0.257 0.245 0.233 0.222 0.212 0.202

</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="8.65" PeakHeight="370.849" Num="5" zHalfNm="327.945" Error="1.17">
-148.231 -20.927 10.602 -1.635 0.165
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="100.823" Depth="0.154"/>
<TopsideChapman PeakHeight="370.849" PeakDensity="928318.9" PeakScaleHeight="32.23" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
