<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 14:50:00.000"
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="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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o 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" >
2026.10.24 (297) 14:50:00</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">
FF202629710241450009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.521" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.726" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="480.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="480.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" 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="3.393" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.362" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="331.488" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.445" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.771" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="150.011" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.443" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.075" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="178.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.500" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
480.000 480.000 485.000 486.667 488.333 490.000 495.000 500.000 500.000 505.000 505.000 515.000 510.000 515.000 520.000 525.000 530.000 533.903 538.320 543.361 549.168 555.930 563.903 573.444
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 54 48 0 0 60 54 45 54 51 57 45 60 60 60 60 57 57 57 54 51 48 45 0
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.483 90.0 95.0 100.0 105.0 110.0 111.539 113.079 114.618 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 331.488 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.283 2.936 3.282 3.393 3.27 3.27 3.393 3.41 3.606 3.786 3.961 4.138 4.319 4.508 4.705 4.911 5.126 5.349 5.576 5.805 6.033 6.258 6.478 6.692 6.898 7.098 7.292 7.479 7.66 7.836 8.008 8.174 8.337 8.497 8.653 8.806 8.956 9.104 9.25 9.394 9.535 9.675 9.811 9.945 10.075 10.199 10.315 10.419 10.506 10.569 10.598 10.6 10.598 10.589 10.572 10.549 10.518 10.482 10.439 10.39 10.336 10.277 10.212 10.144 10.071 9.993 9.913 9.828 9.741 9.65 9.557 9.461 9.363 9.263 9.161 9.057 8.952 8.845 8.737 8.629 8.519 8.409 8.298 8.187 8.076 7.964 7.852 7.741 7.629 7.518 7.407 7.297 7.187 7.078 6.969 6.861 6.754 6.647 6.541 6.437 6.333 6.23 6.128 6.027 5.927 5.829 5.731 5.635 5.539 5.445 5.352 5.26 5.17 5.08 4.992 4.905 4.819 4.735 4.651 4.569 4.488 4.408 4.33 4.252 4.176 4.101 4.027 3.955 3.883 3.813 3.743 3.675 3.608 3.542 3.478 3.414 3.351 3.29 3.229 3.17 3.111 3.054 2.997 2.942 2.887 2.833 2.781 2.729 2.678 2.628 2.579 2.531 2.484 2.437 2.392 2.347 2.303 2.26 2.217 2.176 2.135 2.095 2.055 2.016 1.978 1.941 1.905 1.869 1.833 1.799 1.765 1.731 1.699 1.667 1.635 1.604 1.574 1.544 1.515 1.486 1.458 1.43 1.403 1.376 1.35 1.325

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.393" PeakHeight="110.0" Num="3" Error="0.0">
-30.502 13.154 -3.169
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.393" EndFrequency="10.6" PeakHeight="331.488" Num="5" zHalfNm="215.445" Error="7.058">
-197.2 -33.769 22.011 -11.764 3.852
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.618" Depth="0.123"/>
<TopsideChapman PeakHeight="331.488" PeakDensity="1394044.6" PeakScaleHeight="81.075" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
