<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-06 -065 08:00:00.000"
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 55 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 20% PACIFIC flags: Moderate F-spread, F2o cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace, 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" >
2026.03.06 (065) 08:00:00</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">
FF202606503060800009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="3.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.525" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="7.827" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="265.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="265.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="265.000" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="593.766" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="323.327" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.352" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="379.972" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.918" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="207.517" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="446.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 342.607 355.000 365.000 375.000 390.000 405.000 420.000 440.000 455.000 480.000 500.000 530.000 560.000 595.000 630.000 675.000 730.000 795.000 870.000 965.000 1085.000 1238.415
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 1.953125 1.171875 0.390625 -0.390625 0.390625 -2.734375 -2.734375 -1.171875 -1.171875 2.734375 -0.390625 1.953125 0.390625 1.171875 0.390625 1.171875 -2.734375 0.390625 1.953125 1.171875 1.171875 0.390625
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.277 145.0 150.0 155.0 160.0 165.0 170.0 172.553 175.0 180.0 185.0 190.0 195.0 200.0 203.83 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 593.766 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 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 0.325 0.301 0.266 0.216 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.212 0.237 0.261 0.286 0.311 0.335 0.354 0.379 0.42 0.449 0.475 0.501 0.526 0.552 0.578 0.606 0.635 0.666 0.701 0.738 0.781 0.831 0.891 0.968 1.078 1.287 1.643 1.844 1.971 2.068 2.146 2.213 2.272 2.325 2.373 2.417 2.457 2.494 2.529 2.562 2.593 2.622 2.65 2.676 2.7 2.724 2.746 2.767 2.788 2.807 2.825 2.843 2.86 2.876 2.891 2.906 2.92 2.933 2.946 2.958 2.969 2.98 2.99 3.0 3.01 3.018 3.027 3.034 3.042 3.049 3.055 3.061 3.067 3.072 3.076 3.081 3.084 3.088 3.091 3.093 3.095 3.097 3.098 3.099 3.1 3.1 3.1 3.1 3.099 3.098 3.097 3.095 3.093 3.091 3.089 3.086 3.083 3.079 3.075 3.071 3.067 3.062 3.057 3.052 3.047 3.041 3.035 3.029 3.023 3.016 3.01 3.002 2.995 2.988 2.98 2.972 2.964 2.956 2.947 2.939 2.93 2.921 2.912 2.903 2.893 2.884 2.874 2.864 2.854 2.844 2.833 2.823 2.812 2.802 2.791 2.78 2.769 2.758 2.747 2.735 2.724 2.712 2.701 2.689 2.677 2.666 2.654 2.642 2.63 2.618 2.606 2.593 2.581 2.569 2.556 2.544 2.532 2.519 2.507 2.494 2.482 2.469 2.456 2.444 2.431 2.418 2.406 2.393

</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="3.1" PeakHeight="593.766" Num="5" zHalfNm="323.327" Error="13.559">
-544.299 233.187 -109.719 27.562 3.333
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="93.83" Depth="0.154"/>
<TopsideChapman PeakHeight="593.766" PeakDensity="119230.766" PeakScaleHeight="207.517" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
