<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-15 -074 15:30:00.000"
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" >
2026.03.15 (074) 15:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607403151530009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.546" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.620" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="10.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="516.044" 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="3.402" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.366" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="355.366" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.526" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.453" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="129.489" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.743" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="72.356" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 295.000 296.250 297.500 298.750 300.000 301.250 302.500 303.750 305.000 305.000 305.000 305.000 306.667 308.333 310.000 310.000 315.000 315.833 316.667 317.500 318.333 319.167 320.000 325.000 325.000 327.000 329.000 331.000 333.000 335.000 335.000 335.000 340.000 345.000 345.000 345.000 347.500 350.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 385.000 385.000 390.000 390.000 395.000 400.000 400.000 405.000 410.000 410.000 415.000 420.000 420.000 425.000 425.000 430.000 435.000 435.000 440.000 445.000 445.000 445.000 445.000 450.000 452.500 455.000 456.250 457.500 458.750 460.000 465.000 465.000 465.000 468.000 471.000 474.000 477.000 480.000 480.000 485.000 485.000 487.500 490.000 490.000 490.000 490.000 500.000 500.000 505.000 505.000 506.697 508.602 510.757 513.215 516.044 519.335 523.212 527.845 533.480 540.481 549.415 561.210 577.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 51 48 0 0 0 0 0 0 0 48 48 48 45 0 0 48 48 51 0 54 0 51 0 51 51 51 0 0 48 0 54 54 54 57 48 54 54 0 57 51 54 51 60 57 66 63 69 63 69 63 54 66 60 69 66 60 69 69 63 69 66 60 66 63 66 63 57 60 57 45 57 63 60 63 51 63 0 0 0 63 63 63 57 0 0 0 0 48 57 45 51 0 48 54 51 45 45 48 45 51 48 42 48 0 48 48 42 48 48 45 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 2.734375 1.171875 2.734375 0.390625 -0.390625 0.390625 0.390625 -0.390625 2.734375 -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 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 -1.953125 -0.390625 -0.390625 -0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -2.734375 -0.390625 -1.171875 0.390625 -0.390625 -0.390625 0.390625 -1.953125 -1.171875
</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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.5 113.001 114.501 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 355.366 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.289 2.944 3.291 3.402 3.279 3.279 3.402 3.418 3.573 3.718 3.86 4.0 4.139 4.28 4.423 4.567 4.714 4.864 5.016 5.171 5.328 5.488 5.649 5.812 5.976 6.141 6.306 6.472 6.638 6.803 6.968 7.133 7.297 7.46 7.623 7.785 7.946 8.107 8.268 8.428 8.588 8.749 8.909 9.07 9.231 9.393 9.556 9.719 9.884 10.05 10.216 10.38 10.54 10.686 10.8 10.85 10.85 10.846 10.832 10.809 10.776 10.736 10.688 10.632 10.569 10.5 10.424 10.343 10.256 10.165 10.069 9.968 9.864 9.757 9.646 9.532 9.416 9.298 9.177 9.055 8.931 8.807 8.681 8.554 8.427 8.299 8.171 8.043 7.915 7.787 7.66 7.533 7.407 7.281 7.156 7.032 6.909 6.787 6.666 6.546 6.428 6.31 6.194 6.079 5.966 5.854 5.744 5.635 5.528 5.422 5.317 5.214 5.113 5.013 4.915 4.818 4.723 4.63 4.538 4.447 4.358 4.271 4.185 4.101 4.018 3.936 3.856 3.778 3.701 3.625 3.551 3.478 3.407 3.337 3.268 3.2 3.134 3.069 3.006 2.943 2.882 2.822 2.763 2.706 2.649 2.594 2.539 2.486 2.434 2.383 2.333 2.284 2.236 2.189 2.143 2.098 2.054 2.01 1.968 1.926 1.886 1.846 1.807 1.769 1.731 1.695 1.659 1.624 1.589 1.555 1.522 1.49 1.459 1.428 1.397 1.368 1.339 1.31 1.282 1.255 1.228 1.202 1.177 1.152 1.127 1.103

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.402" PeakHeight="110.0" Num="3" Error="0.0">
-30.508 13.163 -3.173
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.402" EndFrequency="10.85" PeakHeight="355.366" Num="5" zHalfNm="251.526" Error="3.189">
-191.344 -70.079 26.798 -8.938 2.698
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.501" Depth="0.123"/>
<TopsideChapman PeakHeight="355.366" PeakDensity="1460576.9" PeakScaleHeight="72.356" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
