<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-01 -060 03:50:00.000"
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" >
2026.03.01 (060) 03:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.15" 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">
FF202606003010350009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.751" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.006" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="280.158" 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="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="246.670" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="226.646" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.266" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.479" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.131" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.904" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.930" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.900" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="120">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.85 2.9 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 215.000 218.333 221.667 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 226.000 227.000 228.000 229.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 230.000 232.500 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 245.000 235.000 235.000 235.000 235.000 236.250 237.500 238.750 240.000 235.000 235.000 235.000 240.000 240.000 240.000 240.000 240.000 240.000 240.556 241.111 241.667 242.222 242.778 243.333 243.889 244.444 245.000 245.000 245.000 246.250 247.500 248.750 250.000 250.000 252.500 255.000 252.500 250.000 250.000 250.000 255.000 256.250 257.500 258.750 260.000 260.000 260.000 260.000 260.000 260.000 262.500 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 270.000 270.000 270.000 270.000 271.250 272.500 273.750 275.000 275.000 276.017 277.556 280.158 285.509 302.833
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 0 0 0 69 0 0 0 0 78 81 0 0 0 63 0 0 0 0 72 69 66 0 0 0 0 57 0 0 0 0 0 0 72 75 0 51 57 0 0 0 0 66 72 72 57 72 0 75 75 0 0 0 69 0 0 0 0 0 0 0 75 78 0 0 0 0 0 0 0 0 78 69 78 0 0 0 78 75 0 69 0 81 84 81 81 0 0 0 75 69 0 0 0 75 63 72 72 72 72 72 72 66 75 72 69 69 72 75 0 0 0 72 72 75 66 0 0 69
</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 -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 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="77">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 134.5 135.0 140.0 145.0 150.0 155.0 159.0 160.0 165.0 170.0 175.0 180.0 183.5 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 246.67 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.349 0.333 0.306 0.262 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.206 0.238 0.269 0.301 0.332 0.354 0.432 0.707 1.09 1.635 2.34 3.157 4.041 4.967 5.912 6.845 7.71 8.404 8.774 8.8 8.759 8.563 8.243 7.835 7.371 6.878 6.375 5.876 5.392 4.931 4.496 4.089 3.713 3.365 3.047 2.756 2.49 2.249 2.03 1.831 1.651 1.489 1.342 1.209 1.09 0.982 0.885 0.797 0.718 0.646 0.582 0.524 0.472 0.425 0.383 0.345 0.311 0.28 0.252 0.227 0.204

</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="8.8" PeakHeight="246.67" Num="5" zHalfNm="226.646" Error="1.161">
-62.441 -2.695 2.843 -1.58 0.703
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.154"/>
<TopsideChapman PeakHeight="246.67" PeakDensity="960794.06" PeakScaleHeight="14.904" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
