<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 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: 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" >
2026.10.16 (289) 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">
FF202628910161750009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.408" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.287" 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="10.900" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="536.144" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.005" 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="4.176" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="400.210" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.172" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.096" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="171.861" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.102" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="94.967" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="209.270" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" 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" >
5.8 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 345.000 350.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 387.748 390.496 393.244 395.992 398.740 401.488 404.236 406.985 409.733 412.481 415.229 417.977 420.725 423.473 426.221 428.969 431.717 434.465 437.213 439.961 442.709 445.457 448.206 450.954 453.702 456.450 459.198 461.946 464.694 467.442 470.190 472.938 475.686 478.434 481.182 483.930 486.679 489.427 492.175 494.923 497.671 500.419 503.167 505.915 508.663 511.411 514.159 516.907 519.655 522.403 525.151 527.900 530.648 533.396 536.144 538.892 545.000 555.000 565.000 575.000 585.000 595.000 610.000 625.000 640.000 655.000 680.000 700.000 728.521
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 69 66 69 0 66 57 66 63 63 66 0 66 66 63 66 69 0 0 69 66 66 66 66 66 0 0 48 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -2.734375 -1.171875 1.171875 -1.171875 1.953125 -1.171875 0.390625 -1.171875 2.734375 -1.953125 -2.734375 -2.734375 1.953125 -2.734375 1.953125 1.171875 0.390625 0.390625 2.734375 1.171875 -1.953125 0.390625 -1.953125 -0.390625 -2.734375 -1.171875 1.171875 -1.953125 -2.734375 -1.171875 -1.171875 -2.734375 0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 1.953125 1.171875 2.734375 1.171875 -1.171875 2.734375 0.390625 2.734375 -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" >
89.544 90.0 95.0 100.0 105.0 110.0 113.192 115.0 116.385 119.577 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 400.21 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.02 2.601 2.907 3.005 2.883 2.883 2.883 3.005 3.018 3.174 3.325 3.472 3.617 3.761 3.903 4.045 4.186 4.327 4.468 4.609 4.751 4.892 5.034 5.177 5.32 5.463 5.607 5.752 5.897 6.044 6.19 6.338 6.486 6.635 6.785 6.935 7.086 7.237 7.389 7.541 7.694 7.847 8.0 8.153 8.306 8.459 8.611 8.762 8.911 9.059 9.205 9.348 9.488 9.623 9.753 9.878 9.994 10.102 10.201 10.287 10.361 10.42 10.464 10.49 10.5 10.5 10.497 10.489 10.476 10.457 10.434 10.406 10.373 10.336 10.295 10.25 10.201 10.148 10.092 10.033 9.971 9.905 9.837 9.767 9.694 9.619 9.542 9.463 9.382 9.299 9.215 9.129 9.042 8.954 8.865 8.775 8.684 8.592 8.5 8.407 8.314 8.22 8.126 8.032 7.938 7.844 7.749 7.655 7.561 7.467 7.373 7.279 7.186 7.093 7.001 6.909 6.817 6.726 6.636 6.546 6.457 6.369 6.281 6.194 6.107 6.022 5.937 5.853 5.769 5.687 5.605 5.524 5.444 5.365 5.286 5.209 5.132 5.056 4.981 4.907 4.834 4.762 4.69 4.619 4.55 4.481 4.413 4.346 4.28 4.214 4.15 4.086 4.023 3.961 3.9 3.84 3.78 3.722 3.664 3.607 3.55 3.495 3.44 3.386 3.333 3.281 3.229 3.178 3.128 3.079 3.03 2.982 2.935 2.889 2.843 2.798 2.753 2.709 2.666 2.624 2.582 2.541 2.5 2.46 2.421 2.382

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.005" PeakHeight="110.0" Num="3" Error="0.0">
-30.199 12.708 -2.965
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.005" EndFrequency="10.5" PeakHeight="400.21" Num="5" zHalfNm="271.172" Error="2.825">
-252.923 -42.239 15.819 -1.52 0.23
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.577" Depth="0.122"/>
<TopsideChapman PeakHeight="400.21" PeakDensity="1367866.0" PeakScaleHeight="94.967" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
