<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 19:30:00.000"
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 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) 19:30:00</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">
FF202628710141930009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.372" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.804" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="587.115" 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="2.335" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="406.157" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="292.020" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.457" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="155.407" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.175" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.205" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="183.370" 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="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.65 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 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 311.875 313.750 315.625 317.500 319.375 321.250 323.125 325.000 325.000 330.000 330.000 330.000 335.000 335.000 336.667 338.333 340.000 345.000 345.000 350.000 351.667 353.333 355.000 356.667 358.333 360.000 361.667 363.333 365.000 365.000 367.885 370.769 373.654 376.538 379.423 382.308 385.192 388.077 390.962 393.846 396.731 399.615 402.500 405.385 408.269 411.154 414.038 416.923 419.808 422.692 425.577 428.462 431.346 434.231 437.115 440.000 442.885 445.769 448.654 451.538 454.423 457.308 460.192 463.077 465.962 468.846 471.731 474.615 477.500 480.385 483.269 486.154 489.038 491.923 494.808 497.692 500.577 503.462 506.346 509.231 512.115 515.000 517.885 520.769 523.654 526.538 529.423 532.308 535.192 538.077 540.962 543.846 546.731 549.615 552.500 555.385 558.269 561.154 564.038 566.923 569.808 572.692 575.577 578.462 581.346 584.231 587.115 590.000 600.000 613.744 630.902 652.929 682.237
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 0 78 0 0 0 0 0 75 0 0 75 0 0 0 0 78 72 75 0 0 0 0 51 0 0 0 0 75 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 0 0 54 54 54 51 51 45
</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 -1.953125 -1.171875 2.734375 1.171875 -0.390625 -0.390625 -2.734375 1.953125 1.953125 -1.953125 -2.734375 -2.734375 2.734375 -1.953125 -0.390625 -0.390625 -0.390625 0.390625 -1.171875 0.390625 -2.734375 -1.171875 2.734375 -0.390625 -0.390625 1.171875 2.734375 -2.734375 -1.171875 1.171875 -0.390625 -1.171875 -1.171875 -0.390625 1.953125 -1.171875 -1.953125 0.390625 1.953125 1.953125 0.390625 2.734375 1.171875 2.734375 0.390625 -1.953125 1.171875 -1.171875 -1.171875 1.171875 -1.171875 2.734375 1.953125 -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" >
89.676 90.0 95.0 100.0 105.0 110.0 115.0 116.418 120.0 122.837 125.0 129.255 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 406.157 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.567 2.022 2.259 2.335 2.259 2.209 2.209 2.209 2.251 2.335 2.363 2.532 2.687 2.837 2.986 3.136 3.288 3.444 3.604 3.769 3.938 4.111 4.288 4.468 4.651 4.837 5.023 5.211 5.399 5.586 5.773 5.959 6.144 6.328 6.511 6.692 6.871 7.049 7.226 7.401 7.576 7.749 7.921 8.092 8.263 8.432 8.601 8.769 8.937 9.105 9.271 9.438 9.604 9.769 9.933 10.096 10.257 10.416 10.572 10.722 10.865 10.997 11.112 11.206 11.27 11.299 11.3 11.298 11.287 11.269 11.243 11.211 11.171 11.125 11.073 11.015 10.952 10.883 10.81 10.732 10.65 10.563 10.474 10.38 10.284 10.184 10.082 9.978 9.871 9.762 9.652 9.54 9.426 9.312 9.196 9.079 8.962 8.844 8.726 8.607 8.489 8.37 8.251 8.132 8.014 7.896 7.779 7.662 7.545 7.429 7.314 7.2 7.087 6.974 6.863 6.752 6.643 6.534 6.427 6.321 6.216 6.112 6.009 5.908 5.807 5.708 5.611 5.514 5.419 5.325 5.232 5.141 5.051 4.962 4.874 4.788 4.703 4.62 4.537 4.456 4.376 4.297 4.22 4.144 4.069 3.995 3.922 3.851 3.781 3.712 3.644 3.577 3.512 3.447 3.384 3.321 3.26 3.2 3.141 3.082 3.025 2.969 2.914 2.86 2.807 2.754 2.703 2.653 2.603 2.554 2.507 2.46 2.414 2.368 2.324 2.28 2.238 2.196 2.154 2.114 2.074 2.035 1.997 1.959 1.922 1.886

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.335" PeakHeight="110.0" Num="3" Error="0.0">
-29.523 11.742 -2.543
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.335" EndFrequency="11.3" PeakHeight="406.157" Num="5" zHalfNm="292.02" Error="4.436">
-246.983 -51.676 29.89 -11.877 3.744
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.255" Depth="0.126"/>
<TopsideChapman PeakHeight="406.157" PeakDensity="1584243.1" PeakScaleHeight="81.205" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
