<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 20:40:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</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) 20:40:00</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">
FF202628610132040009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.480" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.523" 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="12.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="550.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.251" 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="403.246" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="315.289" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="126.752" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.703" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.000" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="138.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.530" 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" >
5.85 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 11.35 11.4 11.45 11.5
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 330.000 332.500 335.000 335.000 335.000 335.000 335.000 340.000 340.000 342.500 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 362.346 364.691 367.037 369.383 371.728 374.074 376.420 378.765 381.111 383.457 385.802 388.148 390.494 392.840 395.185 397.531 399.877 402.222 404.568 406.914 409.259 411.605 413.951 416.296 418.642 420.988 423.333 425.679 428.025 430.370 432.716 435.062 437.407 439.753 442.099 444.444 446.790 449.136 451.481 453.827 456.173 458.519 460.864 463.210 465.556 467.901 470.247 472.593 474.938 477.284 479.630 481.975 484.321 486.667 489.012 491.358 493.704 496.049 498.395 500.741 503.086 505.432 507.778 510.123 512.469 514.815 517.160 519.506 521.852 524.198 526.543 528.889 531.235 533.580 535.926 538.272 540.617 542.963 545.309 547.654 550.000 560.000 569.432 581.966 599.432 625.456
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 75 72 0 66 72 72 75 75 75 75 66 72 72 75 66 72 75 78 72 75 75 75 75 75 75 0 0 0 0 57 0 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 0 0 0 54 54 51 51 51 51
</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 -0.390625 -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 2.734375 1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 2.734375 1.171875 2.734375 -1.171875 -2.734375 1.171875 0.390625 0.390625 2.734375 0.390625 -1.171875 1.953125 1.171875 -0.390625 -1.953125 -2.734375 1.171875 -0.390625 -2.734375 -2.734375 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 1.953125 2.734375 2.734375 -2.734375 1.953125 2.734375 -0.390625 1.171875 1.953125 2.734375 2.734375 2.734375 -1.953125 2.734375 2.734375 2.734375 -1.171875 -0.390625 2.734375 -2.734375 2.734375 0.390625 0.390625 2.734375 -1.953125 1.953125 1.171875 -2.734375 -1.953125 -1.171875 -1.171875 -2.734375 -2.734375 -1.953125 0.390625 0.390625 2.734375 -1.171875 2.734375 1.171875 0.390625 1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125
</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" >
90.067 95.0 100.0 105.0 110.0 115.0 120.0 123.347 125.0 130.0 135.0 136.695 140.0 145.0 150.0 150.042 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 403.246 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.835 1.084 1.211 1.251 1.229 1.162 1.088 1.088 1.088 1.088 1.088 1.128 1.189 1.25 1.251 1.382 1.511 1.643 1.781 1.926 2.079 2.243 2.416 2.6 2.794 2.997 3.208 3.427 3.651 3.879 4.111 4.345 4.58 4.816 5.053 5.29 5.526 5.762 5.999 6.234 6.47 6.706 6.941 7.176 7.412 7.647 7.882 8.118 8.354 8.59 8.825 9.061 9.296 9.53 9.762 9.992 10.218 10.439 10.651 10.852 11.037 11.201 11.336 11.434 11.49 11.5 11.499 11.488 11.464 11.427 11.38 11.321 11.253 11.175 11.088 10.994 10.892 10.783 10.668 10.547 10.422 10.291 10.157 10.019 9.877 9.733 9.587 9.439 9.289 9.137 8.985 8.832 8.679 8.526 8.372 8.219 8.067 7.915 7.764 7.614 7.465 7.318 7.172 7.027 6.884 6.743 6.603 6.465 6.329 6.195 6.063 5.933 5.805 5.679 5.555 5.433 5.314 5.196 5.081 4.967 4.856 4.747 4.64 4.535 4.432 4.331 4.232 4.135 4.04 3.947 3.856 3.767 3.68 3.594 3.511 3.429 3.349 3.271 3.194 3.119 3.046 2.975 2.905 2.836 2.769 2.704 2.64 2.578 2.516 2.457 2.399 2.342 2.286 2.232 2.179 2.127 2.076 2.027 1.978 1.931 1.885 1.84 1.796 1.753 1.711 1.67 1.63 1.591 1.553 1.516 1.479 1.444 1.409 1.376 1.343 1.31 1.279 1.248 1.218 1.189 1.16 1.132 1.105 1.079 1.053 1.027

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.251" PeakHeight="110.0" Num="3" Error="0.0">
-27.45 9.065 -1.548
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.251" EndFrequency="11.5" PeakHeight="403.246" Num="5" zHalfNm="315.289" Error="4.201">
-234.041 -35.226 23.82 -10.885 3.128
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.042" Depth="0.163"/>
<TopsideChapman PeakHeight="403.246" PeakDensity="1640818.9" PeakScaleHeight="64.0" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
