<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 13:50:00.000"
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" >
2026.10.19 (292) 13:50:00</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">
FF202629210191350009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.677" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.850" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.550" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.858" 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="3.371" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.352" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="338.942" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.908" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.376" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="124.437" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.579" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.402" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.640" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.190" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
310.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 327.500 330.000 332.500 335.000 340.000 341.829 343.658 345.488 347.317 349.146 350.975 352.804 354.634 356.463 358.292 360.121 361.950 363.780 365.609 367.438 369.267 371.096 372.926 374.755 376.584 378.413 380.243 382.072 383.901 385.730 387.559 389.389 391.218 393.047 394.876 396.705 398.535 400.364 402.193 404.022 405.851 407.681 409.510 411.339 413.168 414.997 416.827 418.656 420.485 422.314 424.143 425.973 427.802 429.631 431.460 433.289 435.119 436.948 438.777 440.606 442.435 444.265 446.094 447.923 449.752 451.582 453.392 455.384 457.587 460.036 462.775 465.858 469.355 473.356 477.977 485.000 490.000 500.000 505.000 520.000 535.000 555.000 582.847
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 66 66 63 66 69 72 72 72 69 69 69 63 66 66 0 66 66 69 69 0 72 0 0 57 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 0
</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 1.953125 -0.390625 -0.390625 -2.734375 -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 1.171875 -0.390625 -0.390625 2.734375 -0.390625 -0.390625 -1.171875 2.734375 1.953125 0.390625 -2.734375 -0.390625 2.734375 -0.390625 -1.953125 -1.953125 -2.734375 2.734375 1.171875 2.734375 1.953125 2.734375 2.734375 -0.390625 -2.734375 1.171875 2.734375 1.171875 0.390625 2.734375 -0.390625 1.171875 -1.953125 1.953125 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -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" >
89.486 90.0 95.0 100.0 105.0 110.0 111.631 113.261 114.892 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 338.942 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.268 2.917 3.261 3.371 3.248 3.248 3.371 3.376 3.589 3.789 3.978 4.16 4.338 4.511 4.681 4.85 5.017 5.183 5.349 5.515 5.681 5.847 6.015 6.183 6.352 6.523 6.696 6.871 7.047 7.225 7.406 7.589 7.775 7.963 8.154 8.348 8.544 8.742 8.943 9.146 9.35 9.555 9.76 9.964 10.164 10.358 10.542 10.712 10.863 10.989 11.082 11.137 11.15 11.15 11.142 11.124 11.096 11.059 11.013 10.958 10.896 10.826 10.749 10.666 10.576 10.482 10.382 10.277 10.169 10.056 9.94 9.82 9.698 9.574 9.447 9.318 9.187 9.056 8.923 8.789 8.655 8.52 8.385 8.249 8.114 7.979 7.845 7.711 7.578 7.445 7.313 7.183 7.053 6.925 6.797 6.671 6.547 6.423 6.302 6.181 6.063 5.945 5.83 5.716 5.603 5.493 5.384 5.276 5.17 5.066 4.964 4.863 4.765 4.667 4.572 4.478 4.385 4.295 4.206 4.118 4.033 3.949 3.866 3.785 3.705 3.627 3.551 3.476 3.402 3.33 3.259 3.19 3.122 3.056 2.99 2.927 2.864 2.803 2.743 2.684 2.626 2.569 2.514 2.46 2.407 2.355 2.304 2.254 2.206 2.158 2.111 2.065 2.021 1.977 1.934 1.892 1.851 1.811 1.771 1.733 1.695 1.658 1.622 1.587 1.552 1.518 1.485 1.453 1.421 1.39 1.36 1.33 1.301 1.273 1.245 1.218 1.191 1.165 1.139 1.115 1.09 1.066 1.043 1.02 0.998 0.976

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.371" PeakHeight="110.0" Num="3" Error="0.0">
-30.487 13.131 -3.158
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.371" EndFrequency="11.15" PeakHeight="338.942" Num="5" zHalfNm="242.908" Error="1.704">
-189.547 -50.362 15.926 0.206 -0.273
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.892" Depth="0.123"/>
<TopsideChapman PeakHeight="338.942" PeakDensity="1542462.8" PeakScaleHeight="70.402" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
