<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 15:00:00.000"
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="15.0">
<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" >
2026.10.17 (290) 15:00:00</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">
FF202629010171500009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.348" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.353" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="552.046" 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="3.397" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.364" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="390.544" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.440" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.843" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="181.213" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.592" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="98.940" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="221.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.430" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="101">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 10.6 10.65 10.7 10.75 10.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 305.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 325.000 330.000 330.000 330.000 330.000 335.000 340.000 340.000 340.000 342.500 345.000 350.000 350.000 353.545 357.089 360.634 364.179 367.723 371.268 374.813 378.357 381.902 385.447 388.991 392.536 396.081 399.625 403.170 406.715 410.259 413.804 417.349 420.893 424.438 427.983 431.527 435.072 438.616 442.161 445.706 449.250 452.795 456.340 459.884 463.429 466.974 470.518 474.063 477.608 481.152 484.697 488.242 491.786 495.331 498.876 502.420 505.965 509.510 513.054 516.599 520.144 523.688 527.233 530.778 534.322 537.867 541.412 544.956 548.501 552.046 555.590 559.135 562.680 570.000 575.000 580.000 590.000 600.000 610.000 620.000 630.000 645.000 655.000 675.000 695.000 714.682
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 60 63 54 57 63 66 69 66 63 69 69 66 69 0 66 69 72 69 0 63 69 72 63 72 60 66 57 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 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 1.953125 -1.171875 0.390625 -1.953125 1.171875 0.390625 -2.734375 -2.734375 2.734375 0.390625 2.734375 1.171875 1.171875 1.953125 0.390625 2.734375 -0.390625 1.171875 -2.734375 -1.953125 -1.953125 2.734375 -0.390625 0.390625 -0.390625 2.734375 -1.953125 -1.171875 -2.734375 -0.390625 0.390625 -1.953125 -0.390625 1.171875 -1.171875 -1.953125 -0.390625 -2.734375 -1.171875 1.953125 0.390625 1.171875 1.953125 -0.390625 1.171875 0.390625 -0.390625 -1.171875 0.390625 1.171875 -0.390625 0.390625 2.734375 0.390625 1.953125 -0.390625 1.171875 -2.734375 -1.171875 -0.390625 2.734375 -2.734375 2.734375 -0.390625 1.171875 1.953125 -1.953125
</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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.521 113.043 114.564 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 390.544 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.285 2.94 3.286 3.397 3.274 3.274 3.397 3.413 3.578 3.73 3.875 4.018 4.16 4.304 4.45 4.598 4.75 4.904 5.062 5.222 5.385 5.549 5.715 5.881 6.048 6.213 6.378 6.541 6.702 6.861 7.018 7.173 7.326 7.476 7.624 7.77 7.913 8.055 8.195 8.332 8.469 8.603 8.736 8.868 8.998 9.127 9.254 9.38 9.505 9.629 9.751 9.871 9.989 10.105 10.218 10.327 10.43 10.527 10.614 10.688 10.747 10.785 10.8 10.8 10.798 10.791 10.778 10.761 10.739 10.712 10.682 10.646 10.607 10.565 10.518 10.468 10.414 10.358 10.298 10.236 10.171 10.103 10.033 9.961 9.886 9.81 9.732 9.652 9.57 9.487 9.403 9.317 9.231 9.143 9.054 8.965 8.875 8.784 8.692 8.6 8.508 8.415 8.323 8.23 8.136 8.043 7.95 7.857 7.764 7.671 7.579 7.486 7.394 7.303 7.211 7.12 7.03 6.94 6.851 6.762 6.674 6.586 6.499 6.413 6.327 6.242 6.158 6.074 5.992 5.91 5.828 5.748 5.668 5.589 5.511 5.434 5.357 5.281 5.206 5.132 5.059 4.987 4.915 4.844 4.774 4.705 4.637 4.569 4.503 4.437 4.372 4.308 4.244 4.182 4.12 4.059 3.999 3.939 3.881 3.823 3.766 3.71 3.654 3.599 3.545 3.492 3.439 3.387 3.336 3.286 3.236 3.187 3.139 3.091 3.044 2.998 2.952 2.907 2.863 2.819 2.776 2.734 2.692 2.651 2.61 2.57

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.397" PeakHeight="110.0" Num="3" Error="0.0">
-30.505 13.158 -3.171
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.397" EndFrequency="10.8" PeakHeight="390.544" Num="5" zHalfNm="250.44" Error="4.116">
-246.809 -47.667 25.877 -11.0 3.619
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.564" Depth="0.123"/>
<TopsideChapman PeakHeight="390.544" PeakDensity="1447146.4" PeakScaleHeight="98.94" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
