<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 06:00:00.000"
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 22 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Severe F-spread, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</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) 06:00:00</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">
FF202606703080600009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="5.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.837" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.463" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="5.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="406.564" 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="3.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="386.585" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="309.725" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.914" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="108.723" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="8.979" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.631" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="88.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="51">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
370.833 366.667 362.500 358.333 354.167 350.000 345.000 343.750 342.500 341.250 340.000 340.000 340.000 340.000 340.000 342.500 345.000 347.500 350.000 352.500 355.000 357.500 360.000 362.500 365.000 365.000 365.000 366.250 367.500 368.750 370.000 371.392 372.928 374.632 376.535 378.671 381.088 383.844 387.016 390.706 395.052 400.246 406.564 414.414 424.430 437.652 455.914 482.775 526.179 608.208 821.752
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 60 0 60 0 60 54 0 60 0 63 0 57 66 0 0 0 0 0 0 54 0 0 0 60 60 0 0 63 57 60 60 63 51 57 60 63 0 63 0 57 54 0 54 57 0 51 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 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 1.171875 -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 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 1.171875 1.953125 -1.953125
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.056 150.0 155.0 160.0 165.0 170.0 175.0 180.0 182.112 185.0 190.0 195.0 200.0 205.0 210.0 215.0 218.168 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 386.585 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.333 0.315 0.29 0.257 0.212 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.212 0.234 0.255 0.276 0.298 0.319 0.34 0.354 0.366 0.404 0.455 0.522 0.609 0.712 0.829 0.957 1.096 1.248 1.417 1.608 1.829 2.088 2.397 2.759 3.153 3.536 3.871 4.152 4.385 4.579 4.743 4.882 5.0 5.1 5.185 5.256 5.314 5.362 5.398 5.425 5.442 5.45 5.45 5.448 5.44 5.424 5.403 5.375 5.341 5.303 5.259 5.212 5.16 5.104 5.045 4.983 4.918 4.851 4.782 4.711 4.638 4.564 4.489 4.413 4.336 4.259 4.181 4.103 4.025 3.947 3.869 3.792 3.715 3.638 3.562 3.487 3.413 3.339 3.266 3.194 3.123 3.053 2.984 2.916 2.849 2.784 2.719 2.656 2.593 2.532 2.472 2.413 2.356 2.299 2.244 2.189 2.136 2.084 2.033 1.983 1.934 1.887 1.84 1.795 1.75 1.706 1.664 1.622 1.582 1.542 1.503 1.466 1.429 1.393 1.357 1.323 1.29 1.257 1.225 1.194 1.164 1.134 1.105 1.077 1.05 1.023 0.997 0.971 0.946 0.922 0.899 0.876 0.853 0.831 0.81 0.789 0.769 0.749 0.73 0.711 0.693 0.675 0.658 0.641 0.624 0.608 0.593 0.577 0.562 0.548 0.534 0.52 0.507 0.494 0.481 0.468 0.456 0.445 0.433 0.422 0.411 0.4 0.39 0.38 0.37 0.361

</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="5.45" PeakHeight="386.585" Num="5" zHalfNm="309.725" Error="8.451">
-191.092 44.707 -29.925 12.713 -4.82
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="108.168" Depth="0.154"/>
<TopsideChapman PeakHeight="386.585" PeakDensity="368517.38" PeakScaleHeight="59.631" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
