<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 22:10:00.000"
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 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 40% 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, Trace overlaps while constructing baseline</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" >
2026.03.02 (061) 22:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606103022210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.445" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.382" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="385.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="385.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="551.557" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="471.729" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="413.810" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.682" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="87.879" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.965" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="43.570" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="98.700" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="168">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
385.000 390.000 392.500 395.000 390.000 390.000 390.500 391.000 391.500 392.000 392.500 393.000 393.500 394.000 394.500 395.000 400.000 400.000 400.000 400.000 400.000 401.429 402.857 404.286 405.714 407.143 408.571 410.000 410.000 410.000 411.000 412.000 413.000 414.000 415.000 415.000 416.667 418.333 420.000 420.000 421.250 422.500 423.750 425.000 420.000 420.000 421.667 423.333 425.000 430.000 430.000 430.000 430.000 430.000 430.000 430.000 432.500 435.000 437.500 440.000 440.000 440.000 440.000 440.000 440.000 440.000 440.000 440.000 445.000 446.667 448.333 450.000 450.000 450.833 451.667 452.500 453.333 454.167 455.000 455.000 455.000 455.000 455.000 455.000 455.000 460.000 460.000 465.000 466.667 468.333 470.000 470.000 470.000 470.000 472.500 475.000 475.000 475.000 472.500 470.000 480.000 470.000 480.000 480.000 480.000 482.500 485.000 485.000 485.000 485.000 485.000 487.500 490.000 490.000 490.000 490.000 490.000 490.000 495.000 495.000 495.000 495.000 495.000 495.000 497.500 500.000 500.000 502.500 505.000 502.500 500.000 501.000 502.000 503.000 504.000 505.000 507.857 510.714 513.571 516.429 519.286 522.143 525.000 527.500 530.000 537.500 545.000 545.000 535.000 535.000 535.000 535.000 540.000 542.500 545.000 545.000 545.000 545.000 548.097 551.557 555.448 559.856 564.891 570.696 577.464 585.456 595.036 606.730
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 60 0 54 60 57 0 0 0 0 0 0 0 0 0 48 63 63 63 63 51 0 0 0 57 0 0 66 0 60 0 0 0 0 63 0 0 0 63 66 0 0 0 60 63 0 0 0 57 57 57 57 60 63 57 0 0 0 0 54 54 0 0 0 0 0 0 60 57 0 0 48 51 0 60 0 0 0 54 57 54 54 66 75 66 69 69 60 0 0 57 60 63 63 0 60 63 63 57 57 72 60 66 0 63 72 72 75 75 75 69 69 69 69 63 66 66 60 66 66 0 0 66 69 60 69 63 48 60 54 66 0 60 0 0 54 0 0 0 66 0 0 54 0 57 0 51 54 48 45 0 45 48 0 48 48 48 45 0 0 42 45 48 0 45 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.652 145.0 150.0 155.0 160.0 165.0 170.0 171.303 175.0 180.0 185.0 190.0 195.0 200.0 201.955 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 471.729 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 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 0.324 0.298 0.262 0.209 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.219 0.244 0.269 0.294 0.319 0.344 0.354 0.398 0.47 0.546 0.623 0.704 0.789 0.876 0.968 1.063 1.163 1.267 1.375 1.488 1.605 1.728 1.855 1.988 2.126 2.269 2.419 2.574 2.736 2.904 3.079 3.261 3.45 3.646 3.85 4.062 4.282 4.511 4.748 4.995 5.251 5.516 5.792 6.077 6.373 6.679 6.995 7.321 7.657 8.002 8.355 8.714 9.076 9.437 9.793 10.134 10.452 10.732 10.96 11.118 11.195 11.2 11.194 11.162 11.105 11.025 10.923 10.803 10.666 10.513 10.348 10.171 9.984 9.789 9.587 9.379 9.167 8.952 8.734 8.515 8.296 8.077 7.858 7.641 7.426 7.214 7.004 6.797 6.594 6.394 6.198 6.007 5.819 5.636 5.457 5.282 5.112 4.946 4.784 4.627 4.475 4.326 4.182 4.043 3.907 3.776 3.648 3.525 3.405 3.289 3.177 3.068 2.963 2.861 2.763 2.667 2.575 2.486 2.4 2.317 2.237 2.159 2.084 2.011 1.941 1.874 1.808 1.745 1.684 1.625 1.569 1.514 1.461 1.41 1.36 1.313 1.267 1.222 1.179 1.138 1.098 1.059 1.022 0.986 0.952 0.918 0.886 0.855 0.825 0.796 0.768 0.741 0.715 0.69 0.665 0.642 0.619 0.598 0.577 0.556 0.537 0.518 0.5 0.482 0.465 0.449 0.433 0.418

</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="11.2" PeakHeight="471.729" Num="5" zHalfNm="413.81" Error="2.135">
-235.965 -58.504 28.133 -3.649 0.211
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="91.955" Depth="0.154"/>
<TopsideChapman PeakHeight="471.729" PeakDensity="1556327.5" PeakScaleHeight="43.57" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
