<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 20:00:00.000"
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="18.0">
<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" >
2026.10.12 (285) 20:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628510122000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.413" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.460" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="526.261" 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="1.989" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="406.841" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="287.275" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.464" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="166.704" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.994" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="88.004" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="178.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="95">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 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 10.4 10.45 10.5 10.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 330.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 390.000 390.000 390.000 390.000 393.097 396.194 399.291 402.387 405.484 408.581 411.678 414.775 417.872 420.968 424.065 427.162 430.259 433.356 436.453 439.549 442.646 445.743 448.840 451.937 455.034 458.130 461.227 464.324 467.421 470.518 473.615 476.712 479.808 482.905 486.002 489.099 492.196 495.293 498.389 501.486 504.583 507.680 510.777 513.874 516.970 520.067 523.164 526.261 529.358 535.000 540.000 545.000 550.000 560.000 570.000 575.000 585.000 600.000 610.000 625.000 645.000 665.000 690.000 722.130
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 69 0 78 72 75 81 72 75 78 78 78 81 75 81 75 78 81 75 81 78 81 72 78 72 78 81 78 81 78 81 78 81 78 81 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 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
</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 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 0.390625 1.171875 2.734375 -0.390625 1.171875 1.171875 2.734375 -1.953125 -1.171875 -2.734375 -2.734375 -1.171875 -0.390625 1.953125 2.734375 0.390625 -1.171875 -1.953125 -0.390625 -1.171875 -1.953125 0.390625 -1.953125 -1.953125 2.734375 -1.953125 -0.390625 1.953125 2.734375 1.953125 -0.390625 0.390625 1.171875 -1.171875 2.734375 -1.171875 -0.390625 2.734375 2.734375 -1.171875 -2.734375 1.953125 1.953125 2.734375 0.390625 -2.734375 2.734375
</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" >
89.763 90.0 95.0 100.0 105.0 110.0 115.0 118.274 120.0 125.0 126.547 130.0 134.821 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 406.841 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22 1.333 1.723 1.925 1.989 1.941 1.856 1.856 1.856 1.856 1.912 1.989 1.994 2.129 2.264 2.401 2.541 2.685 2.834 2.988 3.149 3.314 3.486 3.663 3.845 4.032 4.223 4.416 4.613 4.811 5.011 5.211 5.412 5.612 5.813 6.012 6.211 6.408 6.605 6.799 6.993 7.184 7.374 7.562 7.748 7.932 8.114 8.293 8.47 8.643 8.814 8.98 9.143 9.301 9.454 9.601 9.742 9.875 9.999 10.114 10.218 10.31 10.389 10.453 10.502 10.534 10.549 10.55 10.549 10.541 10.528 10.508 10.483 10.452 10.415 10.374 10.328 10.277 10.222 10.163 10.1 10.034 9.964 9.89 9.814 9.735 9.653 9.569 9.483 9.394 9.304 9.212 9.118 9.023 8.927 8.829 8.731 8.632 8.532 8.431 8.33 8.228 8.126 8.024 7.921 7.819 7.717 7.615 7.513 7.411 7.309 7.208 7.108 7.008 6.908 6.809 6.711 6.613 6.517 6.42 6.325 6.23 6.137 6.044 5.952 5.861 5.771 5.681 5.593 5.506 5.42 5.334 5.25 5.167 5.084 5.003 4.923 4.844 4.765 4.688 4.612 4.537 4.463 4.389 4.317 4.246 4.176 4.107 4.039 3.972 3.906 3.84 3.776 3.713 3.651 3.589 3.529 3.469 3.411 3.353 3.296 3.24 3.185 3.131 3.078 3.026 2.974 2.923 2.873 2.824 2.776 2.728 2.681 2.635 2.59 2.545 2.501 2.458 2.416 2.374 2.333 2.293 2.253 2.214 2.176 2.138 2.101

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.989" PeakHeight="110.0" Num="3" Error="0.0">
-29.053 11.095 -2.279
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.989" EndFrequency="10.55" PeakHeight="406.841" Num="5" zHalfNm="287.275" Error="3.165">
-262.175 -17.974 12.048 -5.698 1.779
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="24.821" Depth="0.133"/>
<TopsideChapman PeakHeight="406.841" PeakDensity="1380924.4" PeakScaleHeight="88.004" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
