<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 21:30:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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) 21:30:00</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">
FF202630210292130009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="1.970" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.050" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="695.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="695.000" 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="5.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="800.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.407" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="659.318" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="582.991" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.861" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="119.000" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="8.908" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="57.606" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="184.950" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="56">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
695.000 696.000 697.000 698.000 699.000 700.000 710.000 712.500 715.000 715.000 715.000 715.000 715.000 710.000 720.000 720.714 721.429 722.143 722.857 723.571 724.286 725.000 730.000 735.000 740.000 740.000 740.000 740.000 741.667 743.333 745.000 746.667 748.333 750.000 752.000 754.000 756.000 758.000 760.000 760.000 760.000 765.000 765.000 770.000 770.000 770.000 775.000 780.000 785.000 787.500 790.000 795.000 796.250 797.500 798.750 800.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 60 57 0 60 0 0 0 0 63 72 0 66 0 0 0 0 63 0 0 0 0 0 0 0 0 0 0 0 63 0 0 0 0 0 0 63 72 63 66 0 0 0 0 0 0 63 66 0 0 0 57
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.953125 -0.390625 -1.171875 -1.171875 0.390625 1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.574 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.215 140.0 145.0 150.0 155.0 160.0 165.0 168.43 170.0 175.0 180.0 185.0 190.0 195.0 197.645 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 659.318 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.269 0.353 0.394 0.407 0.402 0.388 0.364 0.327 0.271 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.247 0.282 0.317 0.353 0.388 0.407 0.417 0.44 0.466 0.494 0.524 0.556 0.589 0.623 0.657 0.692 0.726 0.76 0.794 0.828 0.862 0.895 0.928 0.961 0.994 1.027 1.06 1.092 1.125 1.158 1.191 1.224 1.257 1.29 1.323 1.357 1.39 1.424 1.459 1.493 1.528 1.563 1.598 1.634 1.67 1.706 1.743 1.78 1.817 1.855 1.894 1.933 1.972 2.012 2.053 2.094 2.136 2.178 2.221 2.265 2.309 2.355 2.401 2.447 2.495 2.544 2.593 2.643 2.695 2.747 2.801 2.856 2.912 2.97 3.029 3.089 3.151 3.214 3.28 3.347 3.416 3.487 3.561 3.637 3.716 3.798 3.883 3.971 4.063 4.159 4.26 4.366 4.477 4.594 4.716 4.842 4.965 5.065 5.1 5.1 5.095 5.084 5.065 5.041 5.01 4.975 4.934 4.889 4.84 4.786 4.73 4.67 4.608 4.543 4.476 4.407 4.337 4.265 4.192 4.118 4.043 3.968 3.893 3.817 3.742 3.666 3.591 3.516 3.442 3.368 3.295 3.222 3.151 3.08 3.01 2.941 2.873 2.806 2.74 2.675 2.611 2.548 2.487 2.427 2.367 2.309 2.252 2.197 2.142 2.088 2.036 1.985 1.935 1.886 1.838 1.791 1.745 1.701 1.657 1.614 1.573 1.532 1.493 1.454 1.416 1.379 1.343 1.308

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.407" PeakHeight="110.0" Num="3" Error="0.0">
-20.398 3.203 -0.231
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.407" EndFrequency="5.1" PeakHeight="659.318" Num="5" zHalfNm="582.991" Error="8.899">
-344.188 -183.904 77.995 -6.784 -4.792
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="87.645" Depth="0.207"/>
<TopsideChapman PeakHeight="659.318" PeakDensity="322704.72" PeakScaleHeight="57.606" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
