<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 19:30:00.000"
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="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" >
2026.10.29 (302) 19:30:00</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">
FF202630210291930009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.527" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.015" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="465.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="465.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.000" 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="2.311" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="381.947" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.871" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.460" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="171.358" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.654" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="92.546" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="177.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.050" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
465.000 465.000 470.000 475.000 475.000 475.000 480.000 484.235 488.872 493.970 499.603 505.858 512.847 520.704 529.603 539.766 551.482 565.138 581.258 600.575 624.146 653.549 691.255 741.358
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 63 60 0 63 63 63 63 63 63 60 60 63 60 0 60 60 57 0 0 0 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 -1.171875 -2.734375 -1.171875 -1.171875 -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" >
89.681 90.0 95.0 100.0 105.0 110.0 115.0 116.546 120.0 123.093 125.0 129.639 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 381.947 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.551 2.001 2.236 2.311 2.237 2.184 2.184 2.184 2.221 2.311 2.321 2.457 2.598 2.744 2.895 3.051 3.211 3.376 3.546 3.719 3.897 4.079 4.264 4.453 4.645 4.839 5.036 5.235 5.435 5.637 5.839 6.042 6.245 6.447 6.648 6.847 7.045 7.24 7.431 7.619 7.803 7.983 8.157 8.325 8.488 8.643 8.792 8.933 9.066 9.19 9.305 9.412 9.508 9.594 9.671 9.736 9.791 9.835 9.868 9.889 9.899 9.9 9.899 9.893 9.881 9.865 9.843 9.817 9.786 9.751 9.711 9.668 9.621 9.57 9.516 9.459 9.399 9.335 9.27 9.201 9.13 9.057 8.982 8.905 8.827 8.746 8.664 8.581 8.497 8.411 8.325 8.237 8.149 8.06 7.97 7.88 7.79 7.699 7.608 7.517 7.425 7.334 7.243 7.152 7.061 6.97 6.879 6.789 6.699 6.61 6.521 6.432 6.344 6.257 6.17 6.084 5.998 5.913 5.829 5.745 5.663 5.581 5.499 5.419 5.339 5.26 5.182 5.105 5.029 4.953 4.879 4.805 4.732 4.66 4.588 4.518 4.449 4.38 4.312 4.245 4.179 4.114 4.05 3.986 3.924 3.862 3.801 3.741 3.682 3.623 3.566 3.509 3.453 3.398 3.344 3.29 3.237 3.185 3.134 3.083 3.034 2.985 2.936 2.889 2.842 2.796 2.75 2.706 2.662 2.618 2.575 2.533 2.492 2.451 2.411 2.372 2.333 2.295 2.257 2.22 2.183 2.147 2.112 2.077 2.043 2.009

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.311" PeakHeight="110.0" Num="3" Error="0.0">
-29.494 11.701 -2.526
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.311" EndFrequency="9.9" PeakHeight="381.947" Num="5" zHalfNm="258.871" Error="0.877">
-252.142 -0.269 0.155 -0.079 0.027
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.639" Depth="0.127"/>
<TopsideChapman PeakHeight="381.947" PeakDensity="1216005.0" PeakScaleHeight="92.546" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
