<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 14:50:00.000"
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: 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" >
2026.10.17 (290) 14:50:00</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">
FF202629010171450009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.388" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.908" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="541.533" 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="3.400" 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="4.365" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="379.873" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.719" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.770" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="176.879" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.389" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="96.309" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="212.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.470" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="100">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 315.000 305.000 305.000 305.000 305.000 305.000 305.000 305.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 330.000 330.000 332.500 335.000 335.000 335.000 338.623 342.247 345.870 349.494 353.117 356.740 360.364 363.987 367.611 371.234 374.857 378.481 382.104 385.727 389.351 392.974 396.598 400.221 403.844 407.468 411.091 414.715 418.338 421.961 425.585 429.208 432.832 436.455 440.078 443.702 447.325 450.949 454.572 458.195 461.819 465.442 469.066 472.689 476.312 479.936 483.559 487.182 490.806 494.429 498.053 501.676 505.299 508.923 512.546 516.170 519.793 523.416 527.040 530.663 534.287 537.910 541.533 545.157 549.883 555.000 560.000 565.000 575.000 580.000 590.000 600.000 610.000 625.000 640.000 655.000 675.000 699.301
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 66 66 69 66 66 66 63 66 66 66 66 63 66 66 63 66 66 66 63 66 60 63 0 60 66 69 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 -0.390625 -0.390625 2.734375 -1.171875 -1.171875 1.953125 -1.171875 -1.171875 -2.734375 2.734375 2.734375 0.390625 1.953125 -1.953125 1.953125 -0.390625 -0.390625 2.734375 -1.953125 2.734375 1.171875 1.953125 1.171875 1.953125 -1.953125 1.953125 0.390625 -2.734375 0.390625 1.953125 -0.390625 1.171875 1.953125 -1.953125 0.390625 2.734375 -2.734375 1.171875 2.734375 -2.734375 2.734375 1.953125 -1.171875 2.734375 -1.953125 -2.734375 0.390625 0.390625 0.390625 1.953125 1.171875 1.953125 1.953125 -0.390625 1.171875 -2.734375 1.953125 -1.171875 -1.953125 1.953125 -0.390625 1.171875 -0.390625 -2.734375 0.390625 -2.734375 2.734375 -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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.51 113.021 114.531 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 379.873 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.287 2.942 3.289 3.4 3.277 3.277 3.4 3.419 3.596 3.754 3.905 4.054 4.202 4.352 4.504 4.66 4.819 4.983 5.15 5.321 5.495 5.671 5.849 6.027 6.205 6.382 6.557 6.73 6.901 7.069 7.234 7.396 7.555 7.712 7.866 8.017 8.165 8.312 8.456 8.597 8.737 8.875 9.011 9.146 9.279 9.41 9.539 9.667 9.793 9.917 10.038 10.157 10.272 10.383 10.488 10.585 10.672 10.746 10.803 10.838 10.85 10.85 10.847 10.839 10.825 10.806 10.782 10.753 10.72 10.682 10.641 10.595 10.545 10.492 10.435 10.375 10.312 10.246 10.177 10.106 10.032 9.956 9.878 9.798 9.716 9.632 9.547 9.46 9.372 9.282 9.192 9.1 9.008 8.915 8.821 8.727 8.632 8.536 8.441 8.345 8.249 8.153 8.057 7.96 7.864 7.768 7.673 7.577 7.482 7.387 7.293 7.199 7.105 7.012 6.92 6.828 6.737 6.646 6.556 6.467 6.378 6.29 6.203 6.117 6.031 5.947 5.863 5.779 5.697 5.616 5.535 5.455 5.376 5.298 5.221 5.144 5.069 4.994 4.921 4.848 4.776 4.705 4.635 4.565 4.497 4.429 4.363 4.297 4.232 4.167 4.104 4.042 3.98 3.919 3.859 3.8 3.742 3.684 3.628 3.572 3.517 3.462 3.409 3.356 3.304 3.252 3.202 3.152 3.103 3.054 3.007 2.96 2.913 2.868 2.823 2.778 2.735 2.692 2.649 2.608 2.567 2.526 2.486 2.447 2.408 2.37

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.4" PeakHeight="110.0" Num="3" Error="0.0">
-30.507 13.161 -3.172
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.4" EndFrequency="10.85" PeakHeight="379.873" Num="5" zHalfNm="243.719" Error="4.642">
-239.574 -42.654 23.873 -10.846 3.859
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.531" Depth="0.123"/>
<TopsideChapman PeakHeight="379.873" PeakDensity="1460576.9" PeakScaleHeight="96.309" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
