<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 18:10:00.000"
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) 18:10:00</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">
FF202628710141810009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.481" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.163" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.050" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="530.000" 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="2.911" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.129" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="387.742" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.474" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.191" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="151.133" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.734" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="82.956" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="187.940" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.330" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
345.000 345.000 346.000 347.000 348.000 349.000 350.000 345.000 347.143 349.286 351.429 353.571 355.714 357.857 360.000 355.000 358.333 361.667 365.000 365.000 365.000 365.000 365.000 367.500 370.000 372.222 374.444 376.667 378.889 381.111 383.333 385.556 387.778 390.000 392.222 394.444 396.667 398.889 401.111 403.333 405.556 407.778 410.000 412.222 414.444 416.667 418.889 421.111 423.333 425.556 427.778 430.000 432.222 434.444 436.667 438.889 441.111 443.333 445.556 447.778 450.000 452.222 454.444 456.667 458.889 461.111 463.333 465.556 467.778 470.000 472.222 474.444 476.667 478.889 481.111 483.333 485.556 487.778 490.000 492.222 494.444 496.667 498.889 501.111 503.333 505.556 507.778 510.000 512.222 514.444 516.667 518.889 521.111 523.333 525.556 527.778 530.000 535.000 540.000 550.000 559.388 570.644 584.388 601.546 623.573 652.881 693.797
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 57 0 0 0 0 0 57 0 0 0 0 0 0 66 57 0 0 75 0 0 63 0 0 66 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 57 54 57 54 51 51 51 48 51 48 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 1.953125 -0.390625 -1.953125 1.171875 1.953125 1.953125 -1.171875 -0.390625 -2.734375 -1.171875 -1.953125 -2.734375 -0.390625 -1.953125 2.734375 -2.734375 -1.171875 1.953125 -0.390625 -1.953125 -2.734375 -1.953125 -1.171875 1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -2.734375 0.390625 -1.171875 0.390625 0.390625 -2.734375 -2.734375 1.953125 0.390625 -2.734375 -2.734375 -0.390625 -1.171875 -1.171875 2.734375 -2.734375 -0.390625 -1.171875 -0.390625 0.390625 1.953125 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
</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" >
89.561 90.0 95.0 100.0 105.0 110.0 113.619 115.0 117.237 120.0 120.856 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 387.742 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.957 2.52 2.816 2.911 2.789 2.789 2.789 2.882 2.911 3.054 3.226 3.397 3.567 3.734 3.899 4.063 4.225 4.386 4.546 4.705 4.864 5.022 5.18 5.339 5.498 5.657 5.818 5.978 6.14 6.303 6.467 6.632 6.799 6.967 7.137 7.308 7.481 7.655 7.831 8.009 8.188 8.369 8.551 8.735 8.919 9.105 9.29 9.476 9.661 9.844 10.025 10.202 10.374 10.54 10.697 10.843 10.975 11.092 11.189 11.266 11.319 11.346 11.35 11.349 11.342 11.327 11.304 11.275 11.239 11.196 11.148 11.094 11.034 10.969 10.9 10.825 10.747 10.665 10.578 10.489 10.396 10.3 10.202 10.101 9.997 9.892 9.785 9.676 9.565 9.454 9.341 9.227 9.112 8.997 8.881 8.765 8.648 8.531 8.415 8.298 8.181 8.065 7.949 7.833 7.718 7.603 7.489 7.376 7.264 7.152 7.041 6.931 6.822 6.714 6.607 6.501 6.396 6.292 6.19 6.088 5.988 5.888 5.79 5.693 5.598 5.503 5.41 5.318 5.228 5.138 5.05 4.963 4.877 4.793 4.709 4.627 4.546 4.467 4.388 4.311 4.235 4.16 4.086 4.014 3.942 3.872 3.803 3.735 3.668 3.602 3.538 3.474 3.412 3.35 3.29 3.23 3.172 3.114 3.058 3.002 2.948 2.894 2.841 2.789 2.738 2.688 2.639 2.591 2.544 2.497 2.451 2.406 2.362 2.319 2.276 2.234 2.193 2.153 2.113 2.074 2.036 1.998 1.962 1.925 1.89 1.855

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.911" PeakHeight="110.0" Num="3" Error="0.0">
-30.119 12.591 -2.911
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.911" EndFrequency="11.35" PeakHeight="387.742" Num="5" zHalfNm="275.474" Error="2.008">
-236.113 -47.346 17.756 -0.622 -0.561
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.856" Depth="0.122"/>
<TopsideChapman PeakHeight="387.742" PeakDensity="1598294.0" PeakScaleHeight="82.956" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
