<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 08:40:00.000"
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="14.0">
<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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.23 (296) 08:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629610230840009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.240" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.820" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="317.402" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="317.402" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="341.301" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.173" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="276.726" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="219.332" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.162" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="79.866" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="6.936" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="42.786" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="84.760" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
317.402 317.987 318.634 319.354 320.160 321.068 322.099 323.280 324.645 326.243 328.137 330.418 333.219 336.740 341.301 350.000 355.000 370.000 390.000 441.101
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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" >
1.171875 1.171875 2.734375 1.171875 -0.390625 -1.953125 0.390625 0.390625 1.171875 -1.953125 0.390625 1.953125 -2.734375 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="146">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.121 95.0 100.0 105.0 110.0 115.0 120.0 124.208 125.0 130.0 135.0 138.416 140.0 145.0 150.0 152.624 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 276.726 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.782 1.016 1.135 1.173 1.153 1.091 1.001 1.001 1.001 1.001 1.001 1.02 1.081 1.141 1.173 1.242 1.397 1.568 1.751 1.946 2.151 2.363 2.581 2.803 3.027 3.252 3.476 3.699 3.918 4.133 4.341 4.541 4.731 4.906 5.066 5.205 5.321 5.411 5.47 5.498 5.5 5.497 5.481 5.452 5.411 5.359 5.298 5.229 5.152 5.068 4.979 4.884 4.786 4.684 4.58 4.473 4.365 4.256 4.147 4.037 3.927 3.818 3.71 3.603 3.498 3.393 3.291 3.19 3.091 2.994 2.899 2.807 2.716 2.628 2.542 2.458 2.377 2.297 2.22 2.146 2.073 2.003 1.934 1.868 1.804 1.742 1.681 1.623 1.567 1.512 1.46 1.408 1.359 1.311 1.265 1.221 1.178 1.136 1.096 1.057 1.02 0.984 0.949 0.915 0.883 0.851 0.821 0.792 0.764 0.737 0.71 0.685 0.661 0.637 0.614 0.592 0.571 0.551 0.531 0.512 0.494 0.476 0.459 0.443 0.427 0.412 0.397 0.383 0.369 0.356 0.343 0.331 0.319 0.307 0.296 0.286 0.276 0.266 0.256 0.247 0.238 0.23 0.221 0.213 0.206

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.173" PeakHeight="110.0" Num="3" Error="0.0">
-27.188 8.761 -1.452
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.173" EndFrequency="5.5" PeakHeight="276.726" Num="5" zHalfNm="219.332" Error="1.424">
-121.459 -4.375 2.636 -1.035 0.131
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="42.624" Depth="0.172"/>
<TopsideChapman PeakHeight="276.726" PeakDensity="375310.2" PeakScaleHeight="42.786" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
