<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 22:40:00.000"
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 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" >
2026.03.03 (062) 22:40:00</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">
FF202606203032240009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="6.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.293" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.132" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="485.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="485.000" 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="6.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="621.607" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="519.920" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="453.509" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.300" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="102.469" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.003" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="48.508" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="126.290" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.110" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="67">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
505.000 505.000 485.000 495.000 505.000 500.000 505.000 510.000 512.500 515.000 517.500 520.000 520.000 525.000 530.000 535.000 540.000 545.000 551.667 558.333 565.000 555.000 565.000 565.000 565.000 560.000 570.000 570.000 575.000 580.000 581.000 582.000 583.000 584.000 585.000 580.000 582.500 585.000 587.000 589.000 591.000 593.000 595.000 595.000 595.000 590.000 585.000 590.000 590.000 585.000 575.000 585.000 585.000 585.000 585.000 585.000 582.500 580.000 590.000 600.000 603.349 607.670 613.457 621.607 633.940 654.791 697.635
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 60 0 69 69 69 63 0 0 0 51 54 0 0 0 0 57 48 0 51 51 54 51 54 57 57 60 57 60 57 60 0 51 54 54 54 54 0 0 0 0 51 51 54 0 57 60 57 57 51 57 54 0 0 51 0 57 0 54 51 51 0 0 51 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -2.734375 -2.734375 -1.171875 -1.171875 -1.171875 0.390625 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -2.734375 -1.953125 -1.171875 -1.953125 -1.171875 -2.734375 -0.390625 -1.171875 -2.734375 -1.953125 -1.171875 -2.734375 -2.734375 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -1.953125 -2.734375
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.752 145.0 150.0 155.0 160.0 165.0 170.0 175.0 175.504 180.0 185.0 190.0 195.0 200.0 205.0 208.256 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 519.92 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 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 0.343 0.328 0.306 0.275 0.232 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.221 0.245 0.268 0.292 0.315 0.339 0.354 0.366 0.402 0.442 0.486 0.535 0.588 0.646 0.708 0.773 0.841 0.912 0.986 1.061 1.137 1.216 1.295 1.375 1.456 1.538 1.621 1.705 1.79 1.876 1.962 2.05 2.138 2.228 2.318 2.41 2.502 2.596 2.691 2.788 2.885 2.985 3.085 3.188 3.291 3.397 3.505 3.614 3.725 3.839 3.955 4.073 4.194 4.318 4.444 4.574 4.707 4.844 4.984 5.129 5.278 5.431 5.59 5.754 5.922 6.093 6.264 6.424 6.55 6.6 6.6 6.593 6.573 6.542 6.499 6.447 6.385 6.315 6.237 6.153 6.063 5.968 5.868 5.764 5.657 5.547 5.436 5.322 5.208 5.092 4.976 4.86 4.744 4.628 4.513 4.399 4.287 4.175 4.065 3.956 3.849 3.744 3.641 3.54 3.44 3.343 3.247 3.154 3.063 2.974 2.887 2.802 2.719 2.638 2.56 2.483 2.409 2.336 2.265 2.197 2.13 2.065 2.002 1.94 1.881 1.823 1.767 1.712 1.659 1.608 1.558 1.51 1.463 1.417 1.373 1.33 1.289 1.248 1.209 1.171 1.135 1.099 1.065 1.031 0.999 0.967 0.937 0.907 0.879 0.851 0.824 0.798 0.773 0.749 0.725 0.702 0.68 0.659 0.638 0.618 0.598 0.579 0.561 0.543 0.526 0.509 0.493

</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="6.6" PeakHeight="519.92" Num="5" zHalfNm="453.509" Error="3.299">
-259.564 -90.571 54.526 -18.286 2.231
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="98.256" Depth="0.154"/>
<TopsideChapman PeakHeight="519.92" PeakDensity="540446.6" PeakScaleHeight="48.508" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
