<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-11 -284 13:20:00.000"
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="18.0">
<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" >
2026.10.11 (284) 13:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628410111320009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.767" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.169" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.800" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="435.000" 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="3.330" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.333" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="341.541" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.228" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.207" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="114.525" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.498" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="65.882" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="146.390" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.350" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="134">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.7 5.75 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 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.933 331.867 332.800 333.733 334.667 335.600 336.533 337.467 338.400 339.333 340.267 341.200 342.133 343.067 344.000 344.933 345.867 346.800 347.733 348.667 349.600 350.533 351.467 352.400 353.333 354.267 355.200 356.133 357.067 358.000 358.933 359.867 360.800 361.733 362.667 363.600 364.533 365.467 366.400 367.333 368.267 369.200 370.133 371.067 372.000 372.933 373.867 374.800 375.733 376.667 377.600 378.533 379.467 380.400 381.333 382.267 383.200 384.133 385.067 386.000 386.933 387.867 388.800 389.733 390.667 391.600 392.533 393.467 394.400 395.333 396.267 397.200 398.133 399.067 400.000 405.000 405.000 410.000 410.000 415.000 415.000 415.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 435.000 445.000 445.000 448.896 453.328 458.417 464.320 471.249 479.496 489.478 501.807 517.421 537.833 565.657 605.827
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 0 66 63 66 66 66 66 69 72 72 69 69 72 72 69 69 69 69 69 69 69 69 69 69 72 69 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 63 0 0 0 63 57 60 51 57 48 57 60 57 63 57 63 54 60 57 60 60 57 60 63 63 63 60 57 60 57 57 51 0 0 42
</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 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 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 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 1.953125 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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.795 113.591 115.0 115.386 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 341.541 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.24 2.882 3.222 3.33 3.207 3.207 3.304 3.33 3.543 3.746 3.932 4.108 4.276 4.44 4.6 4.758 4.915 5.072 5.23 5.388 5.548 5.711 5.876 6.044 6.216 6.392 6.574 6.761 6.954 7.155 7.363 7.58 7.807 8.045 8.294 8.556 8.832 9.121 9.423 9.737 10.057 10.38 10.695 10.996 11.274 11.523 11.739 11.922 12.071 12.187 12.271 12.325 12.349 12.35 12.347 12.331 12.302 12.261 12.209 12.146 12.073 11.99 11.899 11.8 11.693 11.579 11.459 11.334 11.203 11.067 10.927 10.784 10.637 10.487 10.335 10.181 10.025 9.867 9.709 9.55 9.39 9.23 9.07 8.91 8.751 8.592 8.434 8.277 8.121 7.966 7.813 7.66 7.51 7.361 7.214 7.069 6.925 6.784 6.644 6.506 6.371 6.237 6.106 5.976 5.849 5.724 5.601 5.48 5.361 5.245 5.13 5.018 4.908 4.799 4.693 4.589 4.487 4.387 4.289 4.193 4.099 4.007 3.917 3.828 3.742 3.657 3.574 3.493 3.414 3.336 3.26 3.185 3.112 3.041 2.971 2.903 2.837 2.771 2.708 2.645 2.584 2.525 2.466 2.409 2.354 2.299 2.246 2.194 2.143 2.093 2.045 1.997 1.951 1.906 1.861 1.818 1.776 1.735 1.694 1.655 1.616 1.579 1.542 1.506 1.471 1.436 1.403 1.37 1.338 1.307 1.277 1.247 1.218 1.189 1.161 1.134 1.108 1.082 1.057 1.032 1.008 0.984 0.961 0.939 0.917 0.895

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.33" PeakHeight="110.0" Num="3" Error="0.0">
-30.458 13.087 -3.137
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.33" EndFrequency="12.35" PeakHeight="341.541" Num="5" zHalfNm="258.228" Error="3.566">
-192.351 -40.044 -1.823 9.827 -1.764
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.386" Depth="0.123"/>
<TopsideChapman PeakHeight="341.541" PeakDensity="1892338.8" PeakScaleHeight="65.882" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
