<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 16:40:00.000"
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="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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.10.14 (287) 16:40:00</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">
FF202628710141640009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.361" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.851" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="582.292" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.255" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.297" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="404.361" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="276.723" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.650" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="165.167" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.884" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="92.171" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="219.050" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.210" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 355.000 358.750 362.500 366.250 370.000 371.250 372.500 373.750 375.000 385.000 380.000 381.667 383.333 385.000 390.000 390.000 392.708 395.417 398.125 400.833 403.542 406.250 408.958 411.667 414.375 417.083 419.792 422.500 425.208 427.917 430.625 433.333 436.042 438.750 441.458 444.167 446.875 449.583 452.292 455.000 457.708 460.417 463.125 465.833 468.542 471.250 473.958 476.667 479.375 482.083 484.792 487.500 490.208 492.917 495.625 498.333 501.042 503.750 506.458 509.167 511.875 514.583 517.292 520.000 522.708 525.417 528.125 530.833 533.542 536.250 538.958 541.667 544.375 547.083 549.792 552.500 555.208 557.917 560.625 563.333 566.042 568.750 571.458 574.167 576.875 579.583 582.292 585.000 596.673 609.896 625.000 642.416 662.720 686.695 715.436
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 72 0 0 0 60 0 0 0 63 66 66 51 0 57 66 51 0 54 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 51 48 0 0 48 48 42 42
</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 1.171875 -2.734375 -0.390625 -1.171875 -2.734375 2.734375 -2.734375 1.171875 -1.953125 -2.734375 0.390625 -1.953125 2.734375 2.734375 -1.171875 -1.953125 -1.953125 2.734375 2.734375 -2.734375 1.171875 -1.953125 -1.171875 -1.171875 2.734375 1.171875 0.390625 0.390625 2.734375 -1.953125 1.953125 -1.171875 2.734375 0.390625 -2.734375 -1.171875 1.953125 1.953125 0.390625 1.171875 1.953125 -2.734375 1.953125 1.953125 2.734375 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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" >
89.504 90.0 95.0 100.0 105.0 110.0 112.112 114.223 115.0 116.335 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 404.361 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.189 2.817 3.149 3.255 3.133 3.133 3.178 3.255 3.377 3.538 3.693 3.844 3.992 4.137 4.28 4.421 4.56 4.699 4.836 4.973 5.109 5.244 5.379 5.514 5.649 5.783 5.918 6.052 6.187 6.322 6.457 6.593 6.728 6.865 7.002 7.139 7.277 7.415 7.555 7.694 7.835 7.976 8.118 8.261 8.405 8.549 8.694 8.84 8.987 9.133 9.281 9.428 9.575 9.722 9.867 10.011 10.152 10.289 10.42 10.544 10.657 10.757 10.84 10.902 10.939 10.95 10.95 10.946 10.936 10.92 10.899 10.872 10.84 10.803 10.762 10.715 10.665 10.61 10.552 10.49 10.424 10.355 10.283 10.209 10.131 10.051 9.969 9.884 9.797 9.709 9.618 9.526 9.433 9.339 9.243 9.146 9.048 8.95 8.85 8.751 8.65 8.55 8.449 8.347 8.246 8.145 8.043 7.942 7.841 7.74 7.639 7.539 7.439 7.339 7.24 7.142 7.044 6.947 6.85 6.754 6.659 6.564 6.471 6.378 6.286 6.194 6.104 6.014 5.926 5.838 5.751 5.665 5.58 5.496 5.413 5.331 5.25 5.169 5.09 5.012 4.934 4.858 4.782 4.708 4.635 4.562 4.49 4.42 4.35 4.281 4.214 4.147 4.081 4.016 3.952 3.889 3.826 3.765 3.705 3.645 3.586 3.528 3.471 3.415 3.36 3.305 3.252 3.199 3.147 3.095 3.045 2.995 2.946 2.898 2.851 2.804 2.758 2.713 2.668 2.624 2.581 2.539 2.497 2.456 2.415 2.375

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.255" PeakHeight="110.0" Num="3" Error="0.0">
-30.4 13.003 -3.099
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.255" EndFrequency="10.95" PeakHeight="404.361" Num="5" zHalfNm="276.723" Error="1.546">
-246.908 -63.672 25.447 -3.134 0.241
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.335" Depth="0.122"/>
<TopsideChapman PeakHeight="404.361" PeakDensity="1487624.1" PeakScaleHeight="92.171" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
