<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 13:40:00.000"
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: 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" >
2026.10.13 (286) 13:40:00</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">
FF202628610131340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.360" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.964" 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="11.350" 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="10.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="556.311" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.362" 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="4.347" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="393.115" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="261.157" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.317" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="171.739" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.548" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="94.803" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="213.980" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.380" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<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 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 335.000 337.500 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 363.212 366.423 369.635 372.846 376.058 379.269 382.481 385.693 388.904 392.116 395.327 398.539 401.750 404.962 408.174 411.385 414.597 417.808 421.020 424.231 427.443 430.655 433.866 437.078 440.289 443.501 446.712 449.924 453.136 456.347 459.559 462.770 465.982 469.193 472.405 475.617 478.828 482.040 485.251 488.463 491.674 494.886 498.098 501.309 504.521 507.732 510.944 514.155 517.367 520.579 523.790 527.002 530.213 533.425 536.636 539.848 543.060 546.271 549.483 552.741 556.311 560.240 564.584 569.414 575.000 580.000 590.000 595.000 605.000 615.000 630.000 645.000 660.000 685.000 714.926
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 57 51 57 63 63 60 57 57 60 60 63 63 66 0 0 0 57 63 63 0 51 60 66 69 57 63 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 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 1.171875 -0.390625 0.390625 2.734375 -1.171875 -1.171875 -0.390625 -1.953125 1.953125 -0.390625 -0.390625 2.734375 -0.390625 -1.171875 2.734375 1.171875 -1.171875 1.953125 2.734375 -0.390625 -2.734375 -1.171875 1.953125 -1.171875 -2.734375 -1.953125 1.953125 2.734375 -2.734375 1.953125 -1.953125 -0.390625 2.734375 1.953125 1.171875 -1.171875 2.734375 0.390625 -1.171875 1.171875 1.953125 -1.171875 1.171875 0.390625 2.734375 1.953125 2.734375 -1.953125 0.390625 2.734375 -1.171875 -2.734375 -1.171875 -1.953125 -1.171875 -0.390625 -1.953125 1.953125 -2.734375 1.953125 2.734375 1.171875 2.734375 -2.734375 -0.390625 2.734375 1.171875 -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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.667 113.335 115.0 115.002 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 393.115 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.262 2.91 3.252 3.362 3.239 3.239 3.362 3.362 3.535 3.691 3.839 3.983 4.124 4.265 4.405 4.547 4.689 4.833 4.979 5.126 5.274 5.425 5.576 5.729 5.883 6.038 6.193 6.349 6.505 6.661 6.817 6.972 7.128 7.282 7.437 7.59 7.743 7.895 8.046 8.197 8.346 8.495 8.643 8.79 8.936 9.081 9.225 9.368 9.509 9.649 9.788 9.925 10.059 10.19 10.318 10.44 10.557 10.666 10.764 10.849 10.918 10.968 10.995 11.0 11.0 10.994 10.984 10.967 10.946 10.919 10.887 10.851 10.81 10.765 10.716 10.663 10.606 10.546 10.482 10.415 10.346 10.273 10.198 10.12 10.041 9.959 9.875 9.789 9.701 9.612 9.522 9.43 9.337 9.243 9.148 9.052 8.956 8.859 8.761 8.663 8.564 8.466 8.367 8.268 8.169 8.07 7.971 7.872 7.773 7.675 7.577 7.479 7.382 7.286 7.189 7.094 6.998 6.904 6.81 6.717 6.624 6.533 6.442 6.351 6.262 6.173 6.085 5.998 5.912 5.827 5.742 5.659 5.576 5.494 5.413 5.333 5.254 5.176 5.099 5.022 4.947 4.872 4.799 4.726 4.654 4.584 4.514 4.445 4.377 4.309 4.243 4.178 4.113 4.049 3.987 3.925 3.864 3.803 3.744 3.685 3.628 3.571 3.515 3.459 3.405 3.351 3.298 3.246 3.195 3.144 3.095 3.045 2.997 2.949 2.902 2.856 2.811 2.766 2.722 2.678 2.635 2.593 2.552 2.511 2.471 2.431

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.362" PeakHeight="110.0" Num="3" Error="0.0">
-30.48 13.121 -3.153
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.362" EndFrequency="11.0" PeakHeight="393.115" Num="5" zHalfNm="261.157" Error="3.766">
-244.568 -51.379 21.86 -6.41 2.384
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.002" Depth="0.123"/>
<TopsideChapman PeakHeight="393.115" PeakDensity="1501240.8" PeakScaleHeight="94.803" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
