<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 17:30:00.000"
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="12.0">
<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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2o cusp not found, 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" >
2026.10.19 (292) 17:30:00</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">
FF202629210191730009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.112" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.563" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="365.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="365.000" 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="7.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="387.303" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.086" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.216" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="246.261" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="167.231" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.989" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="94.863" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.098" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="53.332" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="128.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.290" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
365.000 365.000 370.000 370.000 372.500 375.000 380.000 380.000 385.000 385.880 387.303 390.000 397.060
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 72 66 69 60 69 63 69 63
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="176">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.532 90.0 95.0 100.0 105.0 110.0 112.838 115.0 115.675 118.513 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 246.261 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.075 2.671 2.986 3.086 2.964 2.964 2.964 3.086 3.152 3.353 3.546 3.745 3.954 4.174 4.4 4.624 4.839 5.041 5.229 5.406 5.571 5.728 5.877 6.02 6.157 6.291 6.422 6.551 6.679 6.806 6.932 7.057 7.172 7.246 7.25 7.247 7.232 7.206 7.169 7.123 7.068 7.005 6.934 6.857 6.773 6.684 6.59 6.492 6.39 6.285 6.178 6.067 5.955 5.842 5.727 5.612 5.496 5.38 5.264 5.148 5.033 4.919 4.805 4.693 4.581 4.471 4.363 4.255 4.15 4.046 3.944 3.843 3.745 3.648 3.553 3.46 3.369 3.28 3.192 3.107 3.024 2.942 2.862 2.785 2.709 2.634 2.562 2.491 2.423 2.356 2.29 2.227 2.164 2.104 2.045 1.988 1.932 1.878 1.825 1.773 1.723 1.674 1.627 1.581 1.536 1.492 1.45 1.409 1.369 1.33 1.292 1.255 1.219 1.184 1.15 1.117 1.085 1.054 1.024 0.995 0.966 0.938 0.911 0.885 0.86 0.835 0.811 0.788 0.765 0.743 0.722 0.701 0.681 0.661 0.642 0.624 0.606 0.588 0.571 0.555 0.539 0.523 0.508 0.494 0.479 0.466 0.452 0.439 0.426 0.414 0.402 0.391 0.379 0.368 0.358 0.347 0.337 0.328 0.318 0.309 0.3 0.292 0.283 0.275 0.267 0.259 0.252 0.245 0.237 0.231 0.224 0.218 0.211 0.205

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.086" PeakHeight="110.0" Num="3" Error="0.0">
-30.266 12.807 -3.009
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.086" EndFrequency="7.25" PeakHeight="246.261" Num="5" zHalfNm="167.231" Error="4.658">
-109.756 -29.989 18.32 -8.79 2.467
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.513" Depth="0.122"/>
<TopsideChapman PeakHeight="246.261" PeakDensity="652140.2" PeakScaleHeight="53.332" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
