<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 17:00:00.000"
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" >
2026.10.13 (286) 17:00:00</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">
FF202628610131700009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.309" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.246" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="586.862" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.199" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.271" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="409.344" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.488" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.797" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="186.661" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.620" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="102.994" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="225.980" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.470" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="97">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.7 5.75 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" >
335.000 335.000 340.000 340.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 383.629 387.258 390.887 394.517 398.146 401.775 405.404 409.033 412.662 416.292 419.921 423.550 427.179 430.808 434.437 438.067 441.696 445.325 448.954 452.583 456.212 459.842 463.471 467.100 470.729 474.358 477.987 481.617 485.246 488.875 492.504 496.133 499.762 503.392 507.021 510.650 514.279 517.908 521.537 525.167 528.796 532.425 536.054 539.683 543.312 546.942 550.571 554.200 557.829 561.458 565.087 568.717 572.346 575.975 579.604 583.233 586.862 590.000 600.000 605.000 615.000 625.000 640.000 655.000 670.000 700.000 730.000 781.267
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 63 69 66 69 72 63 0 69 66 69 69 69 69 72 69 69 72 69 66 69 69 69 69 69 66 69 69 69 0 0 69 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 -1.953125 -1.171875 -1.953125 -1.953125 1.953125 -2.734375 2.734375 -1.953125 1.953125 -1.953125 1.953125 2.734375 -0.390625 -1.953125 2.734375 1.171875 -2.734375 -1.171875 -1.171875 -0.390625 -0.390625 -2.734375 -2.734375 -0.390625 2.734375 -1.953125 2.734375 0.390625 1.171875 2.734375 -2.734375 -1.171875 2.734375 1.171875 -2.734375 1.953125 2.734375 1.171875 -0.390625 -1.171875 1.171875 -2.734375 1.171875 -1.953125 1.953125 1.953125 2.734375 -1.953125 -0.390625 2.734375 -1.953125 -2.734375 1.171875 1.171875 0.390625 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -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" >
89.512 90.0 95.0 100.0 105.0 110.0 112.347 114.694 115.0 117.041 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 409.344 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.151 2.769 3.095 3.199 3.077 3.077 3.093 3.199 3.289 3.434 3.573 3.709 3.843 3.977 4.11 4.244 4.379 4.514 4.651 4.788 4.927 5.067 5.207 5.349 5.491 5.634 5.777 5.921 6.064 6.209 6.353 6.497 6.64 6.784 6.927 7.07 7.212 7.354 7.496 7.636 7.776 7.916 8.054 8.192 8.329 8.465 8.6 8.734 8.866 8.997 9.127 9.254 9.38 9.503 9.622 9.739 9.851 9.959 10.06 10.154 10.24 10.317 10.382 10.434 10.471 10.494 10.5 10.5 10.497 10.489 10.477 10.461 10.44 10.415 10.386 10.354 10.317 10.278 10.235 10.189 10.14 10.088 10.033 9.976 9.916 9.854 9.79 9.723 9.655 9.585 9.513 9.439 9.364 9.288 9.21 9.131 9.051 8.97 8.888 8.805 8.721 8.637 8.552 8.467 8.381 8.295 8.209 8.122 8.035 7.948 7.861 7.774 7.687 7.6 7.514 7.427 7.341 7.254 7.169 7.083 6.998 6.913 6.829 6.745 6.661 6.578 6.496 6.414 6.333 6.252 6.172 6.092 6.013 5.935 5.858 5.781 5.704 5.629 5.554 5.48 5.406 5.334 5.261 5.19 5.12 5.05 4.981 4.912 4.845 4.778 4.712 4.646 4.582 4.518 4.455 4.392 4.331 4.27 4.21 4.15 4.091 4.033 3.976 3.919 3.863 3.808 3.754 3.7 3.647 3.595 3.543 3.492 3.441 3.392 3.343 3.294 3.246 3.199 3.153 3.107 3.062 3.017 2.973 2.929 2.887 2.844

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.199" PeakHeight="110.0" Num="3" Error="0.0">
-30.357 12.939 -3.07
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.199" EndFrequency="10.5" PeakHeight="409.344" Num="5" zHalfNm="267.488" Error="2.928">
-263.784 -43.977 18.8 -4.934 1.592
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.041" Depth="0.122"/>
<TopsideChapman PeakHeight="409.344" PeakDensity="1367866.0" PeakScaleHeight="102.994" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
