<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 17:30:00.000"
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="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) 17:30:00</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">
FF202629010171730009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.350" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.796" 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="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="365.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="365.000" 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="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="567.387" 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="3.089" 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="/" />
<Modeled Name="foF1p" Val="4.217" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="414.507" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.629" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.988" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="185.379" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.053" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="102.763" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="222.590" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.510" 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" >
365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 400.000 400.000 400.000 400.000 400.000 403.100 406.200 409.299 412.399 415.499 418.599 421.698 424.798 427.898 430.998 434.097 437.197 440.297 443.397 446.496 449.596 452.696 455.796 458.895 461.995 465.095 468.195 471.294 474.394 477.494 480.594 483.693 486.793 489.893 492.993 496.092 499.192 502.292 505.392 508.491 511.591 514.691 517.791 520.890 523.990 527.090 530.190 533.289 536.389 539.489 542.589 545.688 548.788 551.888 554.988 558.087 561.187 564.287 567.387 575.000 585.000 595.000 610.000 620.000 635.000 650.000 670.000 690.000 715.000 745.000 779.615
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 75 72 72 69 72 69 66 54 60 63 60 63 69 72 69 72 72 72 75 78 75 75 60 0 69 0 57 0 0 0 0 0 0 0 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
</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 2.734375 0.390625 -1.953125 -2.734375 1.953125 -1.953125 -0.390625 1.953125 -0.390625 -1.953125 2.734375 -2.734375 -1.953125 2.734375 2.734375 -1.953125 1.171875 0.390625 1.171875 0.390625 1.171875 -1.953125 0.390625 1.953125 -2.734375 -0.390625 -1.171875 -1.953125 -0.390625 0.390625 2.734375 -2.734375 1.953125 2.734375 0.390625 -0.390625 -0.390625 -0.390625 2.734375 -2.734375 -0.390625 0.390625 -2.734375 -1.953125 -2.734375 2.734375 1.171875 2.734375 -2.734375 -1.171875 2.734375 -0.390625 0.390625 1.171875 -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" >
89.53 90.0 95.0 100.0 105.0 110.0 112.825 115.0 115.65 118.475 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 414.507 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.077 2.674 2.989 3.089 2.967 2.967 2.967 3.089 3.134 3.28 3.423 3.563 3.701 3.838 3.974 4.109 4.244 4.378 4.512 4.647 4.781 4.916 5.051 5.186 5.322 5.459 5.596 5.734 5.872 6.011 6.151 6.291 6.433 6.575 6.718 6.861 7.005 7.15 7.296 7.442 7.588 7.735 7.882 8.029 8.176 8.323 8.469 8.614 8.759 8.902 9.044 9.183 9.32 9.453 9.583 9.708 9.828 9.942 10.048 10.147 10.238 10.318 10.388 10.446 10.492 10.525 10.544 10.55 10.55 10.547 10.539 10.527 10.511 10.49 10.465 10.436 10.403 10.367 10.327 10.284 10.238 10.188 10.136 10.081 10.023 9.963 9.9 9.836 9.769 9.7 9.629 9.557 9.482 9.407 9.33 9.251 9.172 9.091 9.01 8.927 8.844 8.759 8.675 8.589 8.503 8.417 8.33 8.243 8.156 8.068 7.981 7.893 7.805 7.718 7.63 7.543 7.456 7.369 7.282 7.196 7.109 7.024 6.938 6.853 6.769 6.685 6.602 6.519 6.436 6.354 6.273 6.192 6.112 6.033 5.954 5.876 5.799 5.722 5.646 5.571 5.496 5.422 5.349 5.277 5.205 5.134 5.064 4.994 4.926 4.858 4.791 4.724 4.658 4.593 4.529 4.466 4.403 4.341 4.28 4.219 4.159 4.1 4.042 3.985 3.928 3.872 3.816 3.761 3.707 3.654 3.601 3.549 3.498 3.448 3.398 3.348 3.3 3.252 3.204 3.158 3.112 3.066 3.021 2.977 2.934 2.891

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.089" PeakHeight="110.0" Num="3" Error="0.0">
-30.269 12.81 -3.011
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.089" EndFrequency="10.55" PeakHeight="414.507" Num="5" zHalfNm="275.629" Error="3.1">
-269.662 -39.569 13.737 -0.519 -0.019
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="8.475" Depth="0.122"/>
<TopsideChapman PeakHeight="414.507" PeakDensity="1380924.4" PeakScaleHeight="102.763" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
