<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 17:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.03.08 (067) 17:40:00</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">
FF202606703081740009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.535" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.428" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="3.152" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.248" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="381.573" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="280.310" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.302" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="136.653" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="62.851" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.265" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.260" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.380" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="164">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 220.000 225.000 230.000 233.889 237.778 241.667 245.556 249.444 253.333 257.222 261.111 265.000 270.000 270.000 273.750 277.500 281.250 285.000 290.000 295.000 297.500 300.000 300.000 305.000 305.000 305.000 307.500 310.000 315.000 320.000 320.000 321.667 323.333 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 332.500 335.000 335.000 335.000 345.000 342.500 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 361.667 363.333 365.000 365.000 365.000 365.000 365.000 365.000 365.000 370.000 375.000 375.000 375.000 375.000 380.000 382.500 385.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 395.000 400.000 402.500 405.000 405.000 405.000 405.000 410.000 415.000 415.000 415.000 420.000 420.000 420.000 425.000 425.000 425.000 425.000 425.000 430.000 430.000 430.000 430.000 430.000 432.500 435.000 437.500 440.000 440.000 445.000 445.000 445.000 445.000 450.000 452.500 455.000 455.000 455.000 455.000 457.500 460.000 462.500 465.000 467.500 470.000 472.500 475.000 475.000 480.000 480.000 483.333 486.667 490.000 490.000 495.000 495.000 500.000 495.000 502.500 510.000 515.000 519.606 524.646 530.183 536.296 543.079 550.648 559.149 568.765 579.730 592.352 607.034 624.327 644.994
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 48 45 0 0 45 0 0 0 0 0 48 45 48 0 48 0 48 48 45 0 48 51 51 54 0 0 54 0 48 54 0 0 51 0 57 63 60 57 57 60 0 57 0 60 0 57 45 0 60 60 60 60 0 60 60 60 0 60 63 63 60 57 0 0 57 60 63 63 60 0 54 66 63 66 66 66 63 0 57 63 66 54 60 66 0 60 66 0 60 66 0 60 63 60 63 45 57 60 63 54 57 63 54 0 57 60 60 60 60 60 57 48 0 0 0 57 57 54 57 60 57 54 0 45 51 57 54 0 54 0 0 0 0 0 45 51 42 48 0 0 45 48 48 45 48 45 0 45 45 45 45 0 48 48 0 48 48 0 0 45 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -1.171875 -0.390625 -0.390625 2.734375 -0.390625 0.390625 -0.390625 -1.171875 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -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 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 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -1.171875 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.521 90.0 95.0 100.0 105.0 110.0 112.55 115.0 115.099 117.649 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 381.573 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.119 2.728 3.049 3.152 3.03 3.03 3.03 3.152 3.216 3.351 3.485 3.619 3.754 3.89 4.028 4.168 4.311 4.456 4.604 4.755 4.91 5.068 5.23 5.395 5.565 5.738 5.914 6.095 6.279 6.468 6.659 6.855 7.054 7.256 7.462 7.671 7.882 8.097 8.314 8.533 8.754 8.977 9.202 9.428 9.654 9.881 10.107 10.333 10.556 10.777 10.993 11.204 11.407 11.6 11.781 11.946 12.091 12.213 12.307 12.369 12.398 12.4 12.398 12.385 12.363 12.331 12.29 12.241 12.184 12.119 12.046 11.967 11.882 11.791 11.694 11.592 11.485 11.374 11.26 11.141 11.019 10.894 10.767 10.637 10.505 10.371 10.235 10.098 9.96 9.821 9.682 9.542 9.401 9.26 9.12 8.979 8.839 8.699 8.56 8.421 8.284 8.146 8.01 7.875 7.741 7.609 7.477 7.347 7.218 7.09 6.964 6.839 6.716 6.594 6.474 6.356 6.239 6.124 6.01 5.898 5.787 5.678 5.571 5.466 5.362 5.26 5.159 5.06 4.963 4.867 4.773 4.68 4.589 4.5 4.412 4.326 4.241 4.157 4.076 3.995 3.916 3.839 3.763 3.688 3.615 3.543 3.472 3.403 3.335 3.268 3.203 3.139 3.076 3.014 2.953 2.894 2.836 2.778 2.722 2.667 2.613 2.561 2.509 2.458 2.408 2.359 2.312 2.265 2.219 2.174 2.13 2.086 2.044 2.002 1.961 1.922 1.882 1.844 1.806 1.77 1.734 1.698 1.664 1.63 1.596 1.564

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.152" PeakHeight="110.0" Num="3" Error="0.0">
-30.319 12.885 -3.045
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.152" EndFrequency="12.4" PeakHeight="381.573" Num="5" zHalfNm="280.31" Error="4.215">
-220.277 -53.09 10.167 -1.62 0.896
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.649" Depth="0.122"/>
<TopsideChapman PeakHeight="381.573" PeakDensity="1907692.2" PeakScaleHeight="75.265" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
