<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 17:50:00.000"
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="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) 17:50:00</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">
FF202629010171750009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.555" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.850" 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="11.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="484.354" 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="3.004" 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="4.176" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="374.192" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.623" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.096" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="142.861" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.394" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.014" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="181.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="103">
<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 10.85 10.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 375.000 376.853 378.707 380.560 382.414 384.267 386.121 387.974 389.828 391.681 393.535 395.388 397.242 399.095 400.948 402.802 404.655 406.509 408.362 410.216 412.069 413.923 415.776 417.630 419.483 421.336 423.190 425.043 426.897 428.750 430.604 432.457 434.311 436.164 438.018 439.871 441.725 443.578 445.431 447.285 449.138 450.992 452.845 454.699 456.552 458.406 460.259 462.113 463.966 465.820 467.673 469.526 471.380 473.233 475.087 476.940 478.794 480.647 482.501 484.354 488.826 493.707 500.000 505.000 510.000 520.000 525.000 535.000 545.000 560.000 570.000 590.000 605.000 630.000 657.592
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 66 69 72 72 72 69 69 69 69 69 72 69 72 72 72 69 66 66 66 69 69 66 63 0 63 66 63 63 0 0 0 0 45 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 0.390625 -1.953125 -0.390625 -0.390625 0.390625 0.390625 0.390625 -1.953125 -0.390625 0.390625 -0.390625 1.171875 0.390625 -0.390625 -0.390625 -1.953125 -0.390625 -1.953125 -2.734375 2.734375 1.171875 -1.953125 0.390625 0.390625 -1.171875 -1.953125 -1.953125 -2.734375 1.171875 1.171875 0.390625 1.953125 -0.390625 2.734375 -0.390625 -1.171875 0.390625 2.734375 -1.171875 -2.734375 2.734375 -1.171875 -0.390625 1.171875 -0.390625 0.390625 2.734375 -2.734375 2.734375 -2.734375 -1.171875 -1.953125 -1.171875 2.734375 -0.390625 2.734375 -0.390625 2.734375 1.171875 0.390625 -1.171875 1.953125 2.734375 -0.390625 -2.734375 -1.171875 1.171875 -1.171875 -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" >
89.545 90.0 95.0 100.0 105.0 110.0 113.199 115.0 116.399 119.598 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 374.192 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.019 2.6 2.906 3.004 2.882 2.882 2.882 3.004 3.018 3.196 3.371 3.541 3.707 3.868 4.026 4.18 4.333 4.483 4.632 4.78 4.927 5.075 5.222 5.37 5.518 5.668 5.818 5.97 6.124 6.28 6.437 6.597 6.76 6.925 7.092 7.263 7.437 7.613 7.793 7.976 8.162 8.351 8.542 8.735 8.93 9.125 9.319 9.511 9.699 9.881 10.056 10.22 10.371 10.507 10.626 10.726 10.804 10.859 10.892 10.9 10.9 10.894 10.881 10.86 10.832 10.797 10.755 10.707 10.653 10.594 10.529 10.459 10.385 10.306 10.223 10.136 10.046 9.953 9.856 9.757 9.656 9.552 9.446 9.338 9.229 9.118 9.006 8.893 8.779 8.664 8.549 8.433 8.317 8.201 8.085 7.968 7.852 7.737 7.621 7.506 7.391 7.277 7.164 7.052 6.94 6.829 6.719 6.61 6.502 6.395 6.288 6.184 6.08 5.977 5.876 5.775 5.676 5.578 5.482 5.386 5.292 5.199 5.108 5.017 4.928 4.841 4.754 4.669 4.585 4.502 4.421 4.341 4.262 4.184 4.108 4.033 3.959 3.886 3.815 3.744 3.675 3.607 3.54 3.474 3.41 3.346 3.284 3.222 3.162 3.103 3.044 2.987 2.931 2.876 2.822 2.768 2.716 2.665 2.614 2.565 2.516 2.469 2.422 2.376 2.331 2.286 2.243 2.2 2.158 2.117 2.077 2.037 1.998 1.96 1.923 1.886 1.85 1.814 1.78 1.745 1.712 1.679 1.647 1.615 1.584 1.554

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.004" PeakHeight="110.0" Num="3" Error="0.0">
-30.198 12.707 -2.964
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.004" EndFrequency="10.9" PeakHeight="374.192" Num="5" zHalfNm="267.623" Error="3.318">
-223.191 -45.293 12.095 3.216 -1.421
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.598" Depth="0.122"/>
<TopsideChapman PeakHeight="374.192" PeakDensity="1474069.5" PeakScaleHeight="80.014" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
