<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 00:10:00.000"
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="15.0">
<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 2 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Severe F-spread, F2x cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</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" >
2026.10.14 (287) 00:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202628710140010009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.510" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.573" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.000" 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="1.700" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="306.953" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="281.497" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.007" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.528" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.219" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="4.177" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.202" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="29">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 295.000 295.000 295.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.456 290.972 291.560 292.238 293.025 293.953 295.063 296.412 298.088 300.227 303.052 306.953 312.694 321.973 339.522 385.285
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 66 0 0 72 66 66 72 72 75 0 72 72 72 72 0 69 69 72 72 72 69 69 0 66 66 0 63 57
</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 1.171875 -0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 1.171875 -0.390625 -0.390625 0.390625 0.390625 2.734375 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="85">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.369 150.0 155.0 160.0 165.0 170.0 175.0 180.0 182.739 185.0 190.0 195.0 200.0 205.0 210.0 215.0 219.108 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 281.497 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0
</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 0.292 0.259 0.215 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.21 0.231 0.252 0.273 0.294 0.315 0.337 0.354 0.383 0.599 0.918 1.346 1.886 2.541 3.296 4.117 4.949 5.717 6.35 6.787 6.989 7.0 6.97 6.833 6.609 6.323 5.993 5.639 5.272 4.904 4.542 4.193 3.859 3.544 3.248 2.971 2.715 2.478 2.26 2.059 1.876 1.707 1.553 1.413 1.285 1.168 1.061 0.965 0.876 0.796 0.723 0.657 0.597 0.542 0.492 0.447 0.406 0.369 0.335 0.304 0.276 0.251 0.228 0.207

</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="7.0" PeakHeight="281.497" Num="5" zHalfNm="260.007" Error="0.708">
-62.723 0.63 -0.283 0.129 -0.142
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="109.108" Depth="0.154"/>
<TopsideChapman PeakHeight="281.497" PeakDensity="607940.44" PeakScaleHeight="16.202" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
