<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 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: 100%</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) 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">
FF202629010171810009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.558" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.165" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.700" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="505.000" 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="2.906" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="375.712" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.138" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.191" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="147.409" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.552" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.946" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="177.360" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="113">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.8 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 343.333 346.667 350.000 350.000 352.095 354.189 356.284 358.378 360.473 362.568 364.662 366.757 368.851 370.946 373.041 375.135 377.230 379.324 381.419 383.514 385.608 387.703 389.797 391.892 393.986 396.081 398.176 400.270 402.365 404.459 406.554 408.649 410.743 412.838 414.932 417.027 419.122 421.216 423.311 425.405 427.500 429.595 431.689 433.784 435.878 437.973 440.068 442.162 444.257 446.351 448.446 450.541 452.635 454.730 456.824 458.919 461.014 463.108 465.203 467.297 469.392 471.486 473.581 475.676 477.770 479.865 481.959 484.054 486.149 488.243 490.338 492.432 494.527 496.622 498.716 500.811 502.905 505.000 510.000 520.000 530.626 543.054 557.782 575.515 597.278 624.620 660.002 707.580
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 66 69 66 66 63 63 63 60 63 63 60 0 0 60 69 63 66 63 60 63 0 0 63 60 0 0 51 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 48 48 54 51 48 51 48 51 48 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 -1.171875 0.390625 -1.171875 2.734375 1.171875 -1.953125 1.171875 -0.390625 -1.953125 -1.171875 -1.171875 -1.953125 -2.734375 1.171875 0.390625 2.734375 -1.171875 2.734375 -1.953125 -2.734375 1.953125 1.171875 2.734375 -1.171875 1.953125 1.171875 -1.171875 -0.390625 -2.734375 -2.734375 2.734375 -2.734375 1.953125 -1.171875 1.953125 -1.171875 2.734375 -2.734375 -1.953125 2.734375 -0.390625 -0.390625 2.734375 1.953125 1.953125 -1.171875 -0.390625 1.171875 -1.171875 1.953125 1.953125 0.390625 -2.734375 -2.734375 -1.953125 -0.390625 0.390625 -2.734375 -2.734375 1.953125 -0.390625 -1.953125 1.171875 -1.171875 2.734375 1.953125 -1.171875 -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
</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" >
89.562 90.0 95.0 100.0 105.0 110.0 113.641 115.0 117.281 120.0 120.922 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 375.712 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.953 2.515 2.812 2.906 2.784 2.784 2.784 2.875 2.906 3.045 3.216 3.387 3.557 3.727 3.896 4.064 4.231 4.399 4.566 4.734 4.902 5.071 5.241 5.411 5.583 5.756 5.931 6.107 6.285 6.465 6.647 6.831 7.017 7.205 7.395 7.587 7.781 7.977 8.174 8.374 8.574 8.776 8.978 9.18 9.382 9.581 9.779 9.973 10.161 10.344 10.518 10.682 10.835 10.973 11.095 11.199 11.283 11.345 11.384 11.4 11.4 11.397 11.386 11.367 11.34 11.306 11.265 11.218 11.165 11.106 11.041 10.971 10.896 10.816 10.733 10.645 10.553 10.458 10.36 10.259 10.155 10.049 9.941 9.831 9.719 9.605 9.49 9.374 9.256 9.138 9.019 8.9 8.78 8.66 8.54 8.42 8.3 8.18 8.06 7.941 7.822 7.704 7.586 7.469 7.353 7.237 7.123 7.009 6.896 6.785 6.674 6.565 6.456 6.349 6.243 6.138 6.035 5.932 5.831 5.731 5.633 5.535 5.439 5.345 5.251 5.159 5.068 4.979 4.891 4.804 4.718 4.634 4.551 4.469 4.389 4.31 4.232 4.155 4.08 4.005 3.932 3.86 3.79 3.72 3.652 3.585 3.519 3.454 3.39 3.327 3.266 3.205 3.146 3.087 3.03 2.973 2.918 2.864 2.81 2.758 2.706 2.655 2.606 2.557 2.509 2.462 2.415 2.37 2.325 2.282 2.239 2.196 2.155 2.114 2.074 2.035 1.997 1.959 1.922 1.886 1.85 1.815 1.78 1.747 1.714 1.681

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.906" PeakHeight="110.0" Num="3" Error="0.0">
-30.115 12.585 -2.908
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.906" EndFrequency="11.4" PeakHeight="375.712" Num="5" zHalfNm="267.138" Error="2.95">
-228.771 -37.996 12.129 0.4 -0.552
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.922" Depth="0.122"/>
<TopsideChapman PeakHeight="375.712" PeakDensity="1612407.0" PeakScaleHeight="80.946" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
