<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 21:00:00.000"
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="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: 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) 21:00:00</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">
FF202628610132100009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.427" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.062" 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="11.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="542.176" 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="0.824" 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="/" />
<URSI ID="92" Val="427.467" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="339.694" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.163" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.556" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.894" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.028" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="130.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.850" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="107">
<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 11.05 11.1 11.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 345.000 350.000 350.000 351.667 353.333 355.000 355.000 360.000 360.000 362.500 365.000 365.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 387.415 389.829 392.244 394.659 397.074 399.488 401.903 404.318 406.733 409.147 411.562 413.977 416.392 418.806 421.221 423.636 426.051 428.465 430.880 433.295 435.710 438.124 440.539 442.954 445.369 447.783 450.198 452.613 455.028 457.442 459.857 462.272 464.687 467.101 469.516 471.931 474.346 476.760 479.175 481.590 484.005 486.419 488.834 491.249 493.664 496.078 498.493 500.908 503.323 505.737 508.152 510.567 512.982 515.396 517.811 520.226 522.640 525.055 527.470 529.885 532.299 534.714 538.279 542.176 546.454 551.172 555.000 560.000 570.000 575.000 585.000 595.000 605.000 620.000 635.000 653.233
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 72 72 0 0 72 72 60 69 57 66 72 75 75 75 72 75 66 72 75 75 69 72 75 78 72 0 78 78 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 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" >
-1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 0.390625 2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 0.390625 -2.734375 -0.390625 1.171875 2.734375 -1.953125 1.171875 -0.390625 1.953125 2.734375 1.171875 2.734375 1.953125 -2.734375 0.390625 0.390625 2.734375 1.953125 -0.390625 -1.953125 -1.953125 2.734375 -0.390625 2.734375 2.734375 2.734375 -2.734375 -1.953125 -1.953125 -2.734375 -0.390625 -1.171875 -1.953125 2.734375 -2.734375 2.734375 1.171875 -1.953125 -0.390625 1.953125 -1.171875 -2.734375 -0.390625 -1.953125 -0.390625 -2.734375 -1.171875 1.171875 -1.953125 2.734375 -0.390625 -1.171875 2.734375 2.734375 2.734375 0.390625 -1.953125 2.734375 0.390625 -0.390625 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.506 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 132.351 135.0 140.0 145.0 150.0 154.701 155.0 160.0 165.0 170.0 175.0 177.052 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 427.467 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.548 0.714 0.798 0.824 0.811 0.77 0.698 0.582 0.503 0.503 0.503 0.503 0.503 0.503 0.507 0.579 0.651 0.723 0.795 0.824 0.89 0.997 1.104 1.215 1.332 1.456 1.59 1.734 1.889 2.057 2.238 2.431 2.638 2.856 3.084 3.323 3.57 3.823 4.083 4.347 4.614 4.884 5.157 5.43 5.705 5.981 6.257 6.533 6.808 7.083 7.357 7.63 7.901 8.169 8.435 8.698 8.956 9.208 9.454 9.692 9.92 10.136 10.339 10.525 10.692 10.837 10.958 11.051 11.114 11.146 11.15 11.148 11.136 11.111 11.075 11.029 10.972 10.906 10.832 10.749 10.659 10.561 10.458 10.348 10.233 10.113 9.989 9.861 9.73 9.596 9.458 9.319 9.178 9.035 8.891 8.746 8.6 8.454 8.308 8.161 8.015 7.87 7.724 7.58 7.437 7.294 7.153 7.013 6.874 6.737 6.601 6.467 6.335 6.204 6.075 5.948 5.823 5.7 5.579 5.459 5.342 5.226 5.113 5.001 4.892 4.784 4.679 4.575 4.473 4.374 4.276 4.18 4.086 3.994 3.903 3.815 3.728 3.644 3.56 3.479 3.399 3.321 3.245 3.171 3.098 3.026 2.956 2.888 2.821 2.755 2.691 2.629 2.568 2.508 2.45 2.392 2.337 2.282 2.229 2.176 2.125 2.076 2.027 1.979 1.933 1.888 1.843 1.8 1.758 1.716 1.676 1.636 1.598 1.56 1.523 1.487 1.452 1.418 1.385 1.352 1.32 1.289 1.258 1.229 1.2 1.171

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.824" PeakHeight="110.0" Num="3" Error="0.0">
-25.567 7.036 -0.963
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.824" EndFrequency="11.15" PeakHeight="427.467" Num="5" zHalfNm="339.694" Error="3.884">
-244.508 -13.096 10.789 -6.3 2.7
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="67.052" Depth="0.321"/>
<TopsideChapman PeakHeight="427.467" PeakDensity="1542462.8" PeakScaleHeight="65.028" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
