<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 16:00:00.000"
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: F2x cusp not found, One of F2 cusps was derived from the other, 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" >
2026.10.24 (297) 16:00:00</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">
FF202629710241600009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.287" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.929" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="10.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="601.467" 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="3.328" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.332" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="415.720" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="266.896" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.327" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="195.086" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="67.611" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="106.778" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="233.760" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.490" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="105">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 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 10.65 10.7 10.75 10.8 10.85 10.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 340.000 340.000 340.000 340.000 337.500 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 343.533 347.067 350.600 354.133 357.667 361.200 364.733 368.267 371.800 375.333 378.867 382.400 385.933 389.467 393.000 396.533 400.067 403.600 407.133 410.667 414.200 417.733 421.267 424.800 428.333 431.867 435.400 438.933 442.467 446.000 449.533 453.067 456.600 460.133 463.667 467.200 470.733 474.267 477.800 481.333 484.867 488.400 491.933 495.467 499.000 502.533 506.067 509.600 513.133 516.667 520.200 523.733 527.267 530.800 534.333 537.867 541.400 544.933 548.467 552.000 555.533 559.067 562.600 566.133 569.667 573.200 576.733 580.267 583.800 587.333 590.867 594.400 597.933 601.467 605.000 620.000 635.000 650.000 668.333 686.667 706.808 728.463 751.811 777.059
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 0 0 0 45 0 0 0 0 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 -0.390625 1.953125 -0.390625 -1.171875 -1.953125 2.734375 1.171875 -0.390625 0.390625 2.734375 0.390625 2.734375 -1.953125 -1.953125 2.734375 1.171875 2.734375 1.953125 1.171875 1.953125 1.953125 -0.390625 -0.390625 0.390625 -1.171875 -0.390625 -0.390625 -2.734375 -2.734375 -1.953125 -0.390625 -1.171875 -2.734375 1.171875 -0.390625 -1.171875 -1.171875 -0.390625 2.734375 1.171875 -1.171875 0.390625 0.390625 0.390625 1.953125 1.171875 1.171875 -1.171875 -2.734375 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -2.734375 -2.734375 -2.734375 0.390625 -0.390625 -1.953125 1.171875 1.171875 2.734375 1.171875 1.171875 -0.390625 0.390625 2.734375 -1.953125 -2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.953125
</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" >
89.493 90.0 95.0 100.0 105.0 110.0 111.807 113.615 115.0 115.422 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 415.72 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.239 2.88 3.22 3.328 3.205 3.205 3.299 3.328 3.467 3.608 3.743 3.876 4.007 4.139 4.271 4.405 4.541 4.679 4.82 4.962 5.107 5.254 5.403 5.553 5.705 5.857 6.01 6.163 6.316 6.469 6.621 6.772 6.922 7.071 7.219 7.365 7.51 7.653 7.795 7.936 8.075 8.213 8.349 8.484 8.618 8.75 8.881 9.01 9.139 9.265 9.391 9.515 9.637 9.757 9.875 9.991 10.104 10.214 10.32 10.422 10.518 10.607 10.687 10.758 10.816 10.86 10.888 10.9 10.9 10.898 10.892 10.881 10.867 10.848 10.825 10.798 10.767 10.733 10.696 10.655 10.611 10.564 10.514 10.461 10.406 10.348 10.288 10.226 10.161 10.095 10.026 9.956 9.884 9.811 9.736 9.659 9.582 9.503 9.423 9.343 9.261 9.178 9.095 9.011 8.926 8.841 8.756 8.67 8.583 8.497 8.41 8.323 8.236 8.149 8.061 7.974 7.887 7.8 7.714 7.627 7.541 7.455 7.369 7.284 7.199 7.114 7.03 6.946 6.863 6.78 6.698 6.616 6.535 6.455 6.375 6.295 6.216 6.138 6.061 5.984 5.908 5.832 5.757 5.683 5.609 5.537 5.464 5.393 5.322 5.252 5.183 5.114 5.047 4.979 4.913 4.847 4.782 4.718 4.655 4.592 4.53 4.468 4.407 4.347 4.288 4.229 4.172 4.114 4.058 4.002 3.947 3.892 3.839 3.785 3.733 3.681 3.63 3.579 3.529 3.48 3.432 3.384 3.336 3.289 3.243 3.198

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.328" PeakHeight="110.0" Num="3" Error="0.0">
-30.456 13.085 -3.136
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.328" EndFrequency="10.9" PeakHeight="415.72" Num="5" zHalfNm="266.896" Error="4.799">
-271.053 -45.907 22.321 -8.694 3.035
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.422" Depth="0.123"/>
<TopsideChapman PeakHeight="415.72" PeakDensity="1474069.5" PeakScaleHeight="106.778" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
