<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-21 -294 11:30:00.000"
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="12.0">
<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: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.21 (294) 11:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629410211130009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.124" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.337" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="7.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="7.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="360.000" 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="2.985" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="7.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="7.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.166" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="272.828" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="201.212" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.972" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="91.943" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.145" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.962" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="119.080" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="60">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 311.667 313.333 315.000 315.000 315.000 315.000 315.000 315.000 315.000 316.282 317.564 318.846 320.128 321.410 322.692 323.974 325.256 326.538 327.821 329.103 330.385 331.667 332.949 334.231 335.513 336.795 338.077 339.359 340.641 341.923 343.205 344.487 345.769 347.051 348.333 349.615 350.897 352.179 353.462 354.744 356.026 357.308 358.590 359.872 361.154 362.436 363.718 365.000 360.000 365.000 370.000 370.000 385.000 390.000 390.000 400.000 410.000 415.000 440.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 0 60 0 0 63 0 66 0 0 60 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 33 0 0 48 57 57 60 45 54 48 54 60 51 51 51
</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 1.953125 -0.390625 -0.390625 0.390625 2.734375 -2.734375 -1.171875 0.390625 1.953125 -1.953125 -1.953125 -1.953125 -0.390625 -1.171875 -0.390625 -1.953125 -0.390625 -1.171875 1.171875 -0.390625 -1.171875 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 -2.734375 -1.171875 0.390625 2.734375 1.171875 -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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="184">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.549 90.0 95.0 100.0 105.0 110.0 113.285 115.0 116.57 119.855 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 272.828 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 2.007 2.584 2.888 2.985 2.863 2.863 2.863 2.985 2.991 3.22 3.481 3.769 4.072 4.379 4.681 4.974 5.257 5.53 5.795 6.052 6.303 6.548 6.789 7.027 7.262 7.495 7.726 7.957 8.188 8.419 8.651 8.884 9.118 9.352 9.585 9.814 10.03 10.214 10.331 10.35 10.348 10.33 10.293 10.239 10.17 10.086 9.988 9.879 9.759 9.629 9.491 9.345 9.193 9.034 8.872 8.705 8.535 8.362 8.188 8.012 7.835 7.659 7.482 7.306 7.13 6.957 6.784 6.614 6.445 6.279 6.115 5.953 5.794 5.638 5.485 5.335 5.188 5.044 4.903 4.765 4.63 4.498 4.37 4.244 4.122 4.003 3.886 3.773 3.662 3.555 3.45 3.348 3.249 3.153 3.059 2.968 2.879 2.793 2.709 2.628 2.549 2.472 2.397 2.325 2.255 2.186 2.12 2.056 1.993 1.933 1.874 1.817 1.762 1.708 1.656 1.605 1.556 1.509 1.463 1.418 1.375 1.333 1.292 1.252 1.214 1.177 1.141 1.106 1.072 1.039 1.007 0.976 0.946 0.917 0.889 0.862 0.835 0.81 0.785 0.761 0.737 0.715 0.693 0.671 0.651 0.631 0.611 0.592 0.574 0.557 0.539 0.523 0.507 0.491 0.476 0.461 0.447 0.433 0.42 0.407 0.395 0.383 0.371 0.359 0.348 0.338 0.327 0.317 0.307 0.298 0.289 0.28 0.271 0.263 0.255 0.247 0.239 0.232 0.225 0.218 0.211 0.205

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.985" PeakHeight="110.0" Num="3" Error="0.0">
-30.182 12.684 -2.953
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.985" EndFrequency="10.35" PeakHeight="272.828" Num="5" zHalfNm="201.212" Error="1.689">
-132.557 -34.146 19.608 -6.287 0.409
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.855" Depth="0.122"/>
<TopsideChapman PeakHeight="272.828" PeakDensity="1329063.2" PeakScaleHeight="49.962" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
