<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 13:50:00.000"
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: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, 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" >
2026.11.03 (307) 13:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630711031350009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.869" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.852" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="375.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="375.000" 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="375.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.355" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.344" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="302.246" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="208.979" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.506" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="120.448" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.524" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.664" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="147.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.380" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="45">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
382.143 383.571 385.000 385.000 385.000 385.000 385.000 386.429 387.857 389.286 390.714 392.143 393.571 395.000 395.000 391.667 388.333 385.000 381.667 378.333 375.000 380.625 386.250 391.875 397.500 403.125 408.750 414.375 420.000 425.000 431.000 437.000 443.000 449.000 455.000 461.000 467.000 473.000 479.000 485.000 485.000 485.000 485.000 485.000 488.624
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 57 0 0 0 60 0 0 0 0 0 0 0 0 0 0 0 0 0 48 0 0 0 0 0 0 0 54 48 45 0 0 0 0 0 0 0 0 42 0 0 0 45 42
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 2.734375 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 2.734375 -0.390625 1.171875 -1.953125 -0.390625 0.390625 0.390625 -0.390625 -0.390625 -2.734375 2.734375 -0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.953125 1.171875 0.390625 -1.171875 -2.734375 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" >
89.489 90.0 95.0 100.0 105.0 110.0 111.695 113.391 115.0 115.086 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 302.246 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.257 2.903 3.246 3.355 3.232 3.232 3.349 3.355 3.575 3.795 4.02 4.255 4.502 4.761 5.032 5.311 5.595 5.879 6.16 6.434 6.701 6.96 7.211 7.454 7.689 7.918 8.141 8.359 8.573 8.782 8.988 9.191 9.391 9.589 9.785 9.98 10.173 10.365 10.555 10.742 10.923 11.095 11.25 11.373 11.442 11.45 11.448 11.434 11.408 11.371 11.322 11.263 11.194 11.116 11.03 10.936 10.835 10.727 10.613 10.494 10.37 10.241 10.108 9.972 9.833 9.691 9.547 9.401 9.253 9.104 8.954 8.803 8.652 8.501 8.35 8.199 8.049 7.899 7.75 7.603 7.456 7.31 7.166 7.023 6.882 6.742 6.604 6.468 6.334 6.201 6.07 5.942 5.815 5.69 5.568 5.447 5.328 5.212 5.097 4.985 4.875 4.766 4.66 4.556 4.453 4.353 4.255 4.159 4.064 3.972 3.881 3.792 3.706 3.621 3.537 3.456 3.376 3.298 3.222 3.147 3.074 3.003 2.933 2.864 2.797 2.732 2.668 2.606 2.545 2.485 2.427 2.37 2.314 2.26 2.206 2.154 2.104 2.054 2.006 1.958 1.912 1.867 1.823 1.78 1.737 1.696 1.656 1.617 1.579 1.541 1.505 1.469 1.434 1.4 1.367 1.334 1.303 1.272 1.241 1.212 1.183 1.155 1.127 1.101 1.074 1.049 1.024 1.0 0.976 0.952 0.93 0.908 0.886 0.865 0.844 0.824 0.805 0.785 0.767 0.748 0.731 0.713 0.696 0.68 0.663 0.648

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.355" PeakHeight="110.0" Num="3" Error="0.0">
-30.475 13.114 -3.15
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.355" EndFrequency="11.45" PeakHeight="302.246" Num="5" zHalfNm="208.979" Error="4.523">
-166.198 -35.567 22.48 -10.505 2.63
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.086" Depth="0.123"/>
<TopsideChapman PeakHeight="302.246" PeakDensity="1626581.9" PeakScaleHeight="64.664" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
