<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 14:10:00.000"
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="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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x 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" >
2026.10.24 (297) 14:10:00</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">
FF202629710241410009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.501" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.258" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="500.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="500.000" 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="10.250" 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="3.384" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.358" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="341.878" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.075" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.500" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="156.747" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.443" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.771" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="182.780" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.65 10.7 10.75 10.8 10.85 10.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
500.000 505.000 510.000 515.000 510.000 510.000 515.000 520.000 530.000 530.000 535.000 540.000 546.667 553.333 560.000 565.000 575.834 587.470 600.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 42 0 48 0 0 0 0 42 0 0 48 0 0 0 42 0 48 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
</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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.577 113.154 114.731 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 341.878 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.277 2.928 3.274 3.384 3.261 3.261 3.384 3.395 3.586 3.763 3.937 4.112 4.291 4.476 4.668 4.868 5.076 5.29 5.51 5.734 5.959 6.183 6.404 6.622 6.834 7.041 7.243 7.439 7.63 7.816 7.997 8.173 8.346 8.514 8.679 8.841 9.0 9.156 9.31 9.461 9.609 9.754 9.896 10.036 10.171 10.302 10.427 10.544 10.651 10.744 10.819 10.872 10.898 10.9 10.899 10.89 10.875 10.854 10.825 10.791 10.751 10.705 10.654 10.598 10.538 10.473 10.403 10.33 10.253 10.173 10.089 10.002 9.913 9.821 9.726 9.63 9.531 9.431 9.329 9.226 9.122 9.016 8.909 8.802 8.694 8.585 8.476 8.367 8.257 8.147 8.037 7.928 7.818 7.709 7.6 7.491 7.383 7.276 7.169 7.063 6.957 6.852 6.748 6.645 6.542 6.441 6.34 6.241 6.142 6.045 5.948 5.853 5.758 5.665 5.572 5.481 5.391 5.302 5.214 5.128 5.042 4.958 4.875 4.792 4.711 4.632 4.553 4.475 4.399 4.324 4.249 4.176 4.104 4.033 3.963 3.895 3.827 3.76 3.695 3.63 3.566 3.504 3.442 3.382 3.322 3.264 3.206 3.149 3.094 3.039 2.985 2.932 2.88 2.829 2.778 2.729 2.68 2.632 2.585 2.539 2.493 2.449 2.405 2.362 2.319 2.278 2.237 2.196 2.157 2.118 2.08 2.042 2.006 1.969 1.934 1.899 1.865 1.831 1.798 1.765 1.733 1.702 1.671 1.641 1.611 1.582

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.384" PeakHeight="110.0" Num="3" Error="0.0">
-30.496 13.144 -3.164
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.384" EndFrequency="10.9" PeakHeight="341.878" Num="5" zHalfNm="222.075" Error="6.667">
-209.321 -30.315 19.396 -10.3 3.393
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.731" Depth="0.123"/>
<TopsideChapman PeakHeight="341.878" PeakDensity="1474069.5" PeakScaleHeight="84.771" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
