<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 13:30:00.000"
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" >
2026.10.15 (288) 13:30:00</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">
FF202628810151330009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.403" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.353" 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="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="551.298" 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="3.346" 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="4.340" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="381.940" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.596" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.261" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="162.185" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.243" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.485" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="210.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.290" 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" >
315.000 320.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 340.000 345.000 350.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 363.333 366.667 370.000 370.000 372.500 375.000 376.667 378.333 380.000 383.115 386.229 389.344 392.458 395.573 398.687 401.802 404.916 408.031 411.145 414.260 417.374 420.489 423.603 426.718 429.832 432.947 436.061 439.176 442.290 445.405 448.519 451.634 454.748 457.863 460.977 464.092 467.206 470.321 473.435 476.550 479.664 482.779 485.893 489.008 492.122 495.237 498.351 501.466 504.580 507.695 510.809 513.924 517.038 520.153 523.267 526.382 529.496 532.611 535.725 538.840 541.954 545.069 548.183 551.298 554.840 558.936 563.728 570.000 575.000 585.000 595.000 610.000 625.000 655.000 693.418
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 57 0 63 60 63 63 63 66 69 0 54 60 66 66 72 66 72 72 0 0 72 75 0 72 0 0 72 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.953125 1.953125 2.734375 -0.390625 1.171875 2.734375 2.734375 1.953125 1.953125 -1.171875 0.390625 -2.734375 -1.953125 -0.390625 -2.734375 -1.171875 -2.734375 -0.390625 -0.390625 1.171875 -0.390625 1.953125 1.953125 1.953125 1.171875 1.953125 -0.390625 2.734375 -2.734375 1.953125 -0.390625 -1.953125 -2.734375 1.953125 0.390625 2.734375 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" >
89.491 90.0 95.0 100.0 105.0 110.0 111.73 113.46 115.0 115.19 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 381.94 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.251 2.896 3.237 3.346 3.223 3.223 3.332 3.346 3.509 3.667 3.82 3.968 4.115 4.26 4.404 4.548 4.692 4.836 4.98 5.125 5.269 5.414 5.559 5.704 5.849 5.994 6.14 6.285 6.43 6.575 6.72 6.865 7.01 7.154 7.299 7.443 7.587 7.731 7.874 8.018 8.161 8.305 8.448 8.59 8.733 8.875 9.017 9.158 9.298 9.437 9.574 9.709 9.841 9.969 10.092 10.206 10.31 10.401 10.473 10.523 10.548 10.55 10.549 10.542 10.529 10.511 10.487 10.457 10.423 10.384 10.34 10.292 10.24 10.184 10.124 10.06 9.994 9.924 9.851 9.775 9.697 9.616 9.534 9.449 9.362 9.274 9.184 9.092 8.999 8.905 8.81 8.714 8.618 8.52 8.422 8.324 8.225 8.126 8.026 7.927 7.827 7.728 7.628 7.529 7.43 7.331 7.233 7.135 7.038 6.941 6.844 6.748 6.653 6.559 6.465 6.372 6.279 6.188 6.097 6.007 5.918 5.83 5.742 5.656 5.57 5.485 5.402 5.319 5.237 5.156 5.076 4.997 4.919 4.842 4.766 4.691 4.617 4.544 4.471 4.4 4.33 4.261 4.192 4.125 4.058 3.993 3.928 3.864 3.801 3.74 3.679 3.619 3.559 3.501 3.443 3.387 3.331 3.276 3.222 3.169 3.116 3.065 3.014 2.964 2.915 2.866 2.818 2.771 2.725 2.68 2.635 2.591 2.547 2.505 2.463 2.421 2.381 2.341 2.301 2.263 2.225 2.187 2.15 2.114 2.078 2.043

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.346" PeakHeight="110.0" Num="3" Error="0.0">
-30.469 13.105 -3.145
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.346" EndFrequency="10.55" PeakHeight="381.94" Num="5" zHalfNm="255.596" Error="1.827">
-231.103 -54.897 23.02 -5.082 1.312
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.19" Depth="0.123"/>
<TopsideChapman PeakHeight="381.94" PeakDensity="1380924.4" PeakScaleHeight="90.485" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
