<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 21:40:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: Multiple candidates for F2o cusp, F2 cusps do not match, 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" >
2026.10.12 (285) 21:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628510122140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.676" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.336" 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="6.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="430.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="430.000" 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="7.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="507.160" 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="396.032" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="340.581" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.743" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="82.717" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.720" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="40.689" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="88.330" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.580" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="41">
<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 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
430.000 435.000 435.000 435.000 430.000 435.000 435.000 435.000 435.000 440.000 442.500 445.000 445.000 450.000 450.000 450.000 450.000 450.000 455.000 455.000 455.000 455.000 460.000 460.000 460.000 465.000 465.000 470.000 472.500 475.000 475.000 475.000 477.500 479.129 481.041 483.318 486.075 489.482 493.800 499.450 507.160
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
87 66 75 81 81 84 90 84 87 90 81 81 81 78 81 78 75 78 75 78 87 87 84 84 81 81 84 84 57 78 87 78 69 87 87 87 0 0 78 78 75
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="173">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.235 145.0 150.0 155.0 160.0 165.0 170.0 170.469 175.0 180.0 185.0 190.0 195.0 200.0 200.704 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 396.032 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0
</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 0.323 0.297 0.259 0.203 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.223 0.249 0.274 0.299 0.325 0.35 0.354 0.432 0.509 0.586 0.668 0.758 0.859 0.972 1.1 1.242 1.4 1.572 1.756 1.951 2.153 2.362 2.576 2.793 3.014 3.236 3.462 3.689 3.919 4.151 4.385 4.621 4.86 5.102 5.346 5.591 5.839 6.087 6.335 6.58 6.819 7.046 7.252 7.423 7.545 7.598 7.6 7.593 7.566 7.519 7.455 7.375 7.281 7.174 7.057 6.931 6.796 6.655 6.509 6.358 6.204 6.047 5.889 5.729 5.57 5.411 5.253 5.096 4.941 4.788 4.637 4.489 4.344 4.201 4.062 3.926 3.794 3.664 3.539 3.416 3.297 3.182 3.07 2.961 2.856 2.754 2.655 2.56 2.467 2.378 2.291 2.208 2.127 2.049 1.974 1.901 1.831 1.764 1.699 1.636 1.575 1.517 1.46 1.406 1.354 1.303 1.255 1.208 1.163 1.119 1.078 1.037 0.998 0.961 0.925 0.89 0.857 0.825 0.794 0.764 0.735 0.708 0.681 0.656 0.631 0.607 0.584 0.562 0.541 0.521 0.501 0.483 0.464 0.447 0.43 0.414 0.398 0.383 0.369 0.355 0.342 0.329 0.316 0.304 0.293 0.282 0.271 0.261 0.251 0.242 0.233 0.224 0.216 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="7.6" PeakHeight="396.032" Num="5" zHalfNm="340.581" Error="4.874">
-181.681 -27.114 18.997 -9.439 3.909
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="90.704" Depth="0.154"/>
<TopsideChapman PeakHeight="396.032" PeakDensity="716625.3" PeakScaleHeight="40.689" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
