<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.15 (288) 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">
FF202628810152040009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.496" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.712" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="9.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="502.191" 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="1.244" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="401.911" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="296.895" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.315" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="149.671" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.620" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="78.351" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="148.600" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 321.250 322.500 323.750 325.000 325.000 326.429 327.857 329.286 330.714 332.143 333.571 335.000 340.000 340.000 340.000 340.000 342.500 345.000 347.500 350.000 350.000 352.984 355.968 358.952 361.937 364.921 367.905 370.889 373.873 376.857 379.841 382.825 385.810 388.794 391.778 394.762 397.746 400.730 403.714 406.699 409.683 412.667 415.651 418.635 421.619 424.603 427.587 430.572 433.556 436.540 439.524 442.508 445.492 448.476 451.461 454.445 457.429 460.413 463.397 466.381 469.365 472.349 475.334 478.318 481.302 484.286 487.270 490.254 493.238 496.223 499.207 502.191 505.175 510.000 515.000 525.000 530.000 540.000 550.000 560.000 570.000 585.000 600.000 615.000 635.000 660.000 687.126
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 0 0 75 0 0 0 0 0 0 0 0 78 78 75 0 0 0 0 75 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
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -0.390625 -1.171875 -0.390625 -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 -0.390625 -0.390625 0.390625 -2.734375 0.390625 -1.171875 2.734375 -1.953125 1.171875 -2.734375 -1.171875 -1.953125 0.390625 1.171875 1.953125 -2.734375 -1.171875 2.734375 1.171875 2.734375 0.390625 2.734375 -0.390625 2.734375 -0.390625 -1.953125 1.171875 1.953125 -1.171875 1.953125 2.734375 -1.953125 -0.390625 2.734375 0.390625 -0.390625 -1.953125 -2.734375 -0.390625 1.953125 -0.390625 -1.953125 2.734375 -1.953125 1.171875 2.734375 1.171875 -0.390625 2.734375 2.734375 2.734375 -2.734375 1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -1.953125 2.734375 -2.734375 1.171875 -2.734375 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" >
90.071 95.0 100.0 105.0 110.0 115.0 120.0 123.419 125.0 130.0 135.0 136.837 140.0 145.0 150.0 150.256 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 401.911 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.83 1.078 1.204 1.244 1.222 1.156 1.081 1.081 1.081 1.081 1.081 1.119 1.18 1.241 1.244 1.36 1.479 1.599 1.724 1.853 1.99 2.134 2.288 2.451 2.625 2.811 3.007 3.215 3.433 3.662 3.899 4.143 4.393 4.648 4.905 5.165 5.425 5.684 5.942 6.199 6.453 6.703 6.95 7.192 7.43 7.663 7.89 8.111 8.325 8.532 8.732 8.922 9.104 9.276 9.437 9.587 9.724 9.849 9.96 10.056 10.137 10.202 10.251 10.284 10.299 10.3 10.298 10.29 10.273 10.249 10.218 10.181 10.137 10.087 10.031 9.971 9.905 9.834 9.759 9.68 9.598 9.511 9.422 9.329 9.234 9.136 9.037 8.935 8.831 8.725 8.618 8.51 8.401 8.291 8.181 8.069 7.957 7.845 7.733 7.621 7.509 7.397 7.285 7.174 7.063 6.952 6.843 6.734 6.625 6.518 6.411 6.305 6.2 6.096 5.994 5.892 5.791 5.691 5.593 5.496 5.4 5.305 5.211 5.119 5.027 4.937 4.849 4.761 4.675 4.59 4.507 4.424 4.343 4.263 4.184 4.107 4.031 3.956 3.882 3.81 3.738 3.668 3.599 3.531 3.465 3.399 3.335 3.271 3.209 3.148 3.088 3.029 2.971 2.914 2.859 2.804 2.75 2.697 2.645 2.594 2.544 2.495 2.447 2.399 2.353 2.307 2.263 2.219 2.176 2.133 2.092 2.051 2.011 1.972 1.934 1.896 1.859 1.823 1.787 1.752 1.718 1.685 1.652 1.619 1.588 1.557

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.244" PeakHeight="110.0" Num="3" Error="0.0">
-27.428 9.038 -1.539
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.244" EndFrequency="10.3" PeakHeight="401.911" Num="5" zHalfNm="296.895" Error="3.644">
-253.939 2.454 0.528 -2.466 1.768
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.256" Depth="0.163"/>
<TopsideChapman PeakHeight="401.911" PeakDensity="1316253.1" PeakScaleHeight="78.351" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
