<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 21:20:00.000"
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) 21:20:00</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">
FF202630210292120009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="6.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="1.864" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.677" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="720.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="720.000" 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="6.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="856.191" 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="0.505" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="740.944" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="704.506" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.971" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="63.215" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.614" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="29.795" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="116.480" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.570" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="85">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
980.000 980.000 980.000 980.000 985.000 986.667 988.333 990.000 995.000 995.000 995.000 1000.000 1005.000 1005.000 1007.500 1010.000 1010.000 1013.333 1016.667 1020.000 995.000 970.000 945.000 920.000 895.000 870.000 845.000 820.000 795.000 770.000 745.000 720.000 721.667 723.333 725.000 726.667 728.333 730.000 735.000 740.000 742.000 744.000 746.000 748.000 750.000 750.000 750.000 755.000 756.667 758.333 760.000 765.000 765.000 766.667 768.333 770.000 771.667 773.333 775.000 780.000 780.000 783.333 786.667 790.000 793.333 796.667 800.000 800.000 803.571 807.143 810.714 814.286 817.857 821.429 825.000 835.000 835.000 837.500 840.000 842.500 845.000 847.500 850.000 856.191 862.854
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 60 0 0 0 0 0 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 66 0 0 0 0 0 72 69 69 0 0 0 0 69 69 0 69 0 0 72 72 0 0 0 63 0 0 0 57 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 54 0 0 0 0 0 0 0 66 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-2.734375 -2.734375 -2.734375 1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 0.390625 -2.734375 -1.953125 2.734375 1.953125 0.390625 1.171875 1.171875 1.953125 -1.953125 -1.171875 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 -0.390625 -2.734375 -2.734375 -2.734375 -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" >
91.611 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 137.865 140.0 145.0 150.0 155.0 160.0 165.0 165.73 170.0 175.0 180.0 185.0 190.0 193.595 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 740.944 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.334 0.437 0.489 0.505 0.498 0.478 0.441 0.384 0.293 0.213 0.213 0.213 0.213 0.213 0.213 0.213 0.213 0.258 0.31 0.363 0.415 0.467 0.505 0.525 0.571 0.605 0.635 0.662 0.688 0.713 0.736 0.759 0.782 0.804 0.826 0.848 0.87 0.892 0.913 0.935 0.956 0.978 1.0 1.021 1.043 1.065 1.087 1.11 1.132 1.155 1.177 1.2 1.223 1.247 1.27 1.294 1.318 1.343 1.368 1.392 1.418 1.443 1.469 1.495 1.522 1.549 1.576 1.604 1.632 1.66 1.689 1.718 1.748 1.778 1.809 1.84 1.872 1.904 1.936 1.97 2.004 2.038 2.073 2.109 2.145 2.182 2.219 2.258 2.297 2.337 2.378 2.419 2.462 2.505 2.549 2.594 2.641 2.688 2.737 2.786 2.837 2.889 2.942 2.997 3.053 3.111 3.171 3.232 3.295 3.359 3.426 3.495 3.567 3.641 3.717 3.796 3.879 3.965 4.054 4.147 4.245 4.348 4.456 4.57 4.692 4.822 4.961 5.112 5.278 5.463 5.676 5.933 6.289 6.8 6.788 6.743 6.667 6.565 6.441 6.299 6.141 5.971 5.792 5.605 5.414 5.221 5.026 4.832 4.639 4.448 4.261 4.078 3.9 3.726 3.558 3.395 3.238 3.087 2.941 2.801 2.667 2.538 2.415 2.297 2.184 2.077 1.974 1.876 1.783 1.694 1.61 1.529 1.452 1.379 1.31 1.244 1.181 1.121 1.064 1.01 0.959 0.911 0.864 0.82 0.779 0.739

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.505" PeakHeight="110.0" Num="3" Error="0.0">
-22.385 4.403 -0.407
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.505" EndFrequency="6.8" PeakHeight="740.944" Num="5" zHalfNm="704.506" Error="64.899">
-332.081 -298.104 69.362 13.474 0.0
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="83.595" Depth="0.292"/>
<TopsideChapman PeakHeight="740.944" PeakDensity="573697.25" PeakScaleHeight="29.795" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
