<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 20:00:00.000"
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="14.0">
<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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other</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" >
2026.10.22 (295) 20:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629510222000009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.878" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="36.555" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.950" 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="12.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="440.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.964" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="329.780" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="272.588" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.466" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="81.121" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="37.867" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="41.621" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="107.430" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="128">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 12.4 12.45 12.5 12.55 12.6 12.65 12.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 315.000 320.000 321.250 322.500 323.750 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 352.500 355.000 355.000 355.690 356.379 357.069 357.759 358.448 359.138 359.828 360.517 361.207 361.897 362.586 363.276 363.966 364.655 365.345 366.034 366.724 367.414 368.103 368.793 369.483 370.172 370.862 371.552 372.241 372.931 373.621 374.310 375.000 375.690 376.379 377.069 377.759 378.448 379.138 379.828 380.517 381.207 381.897 382.586 383.276 383.966 384.655 385.345 386.034 386.724 387.414 388.103 388.793 389.483 390.172 390.862 391.552 392.241 392.931 393.621 394.310 395.000 397.500 400.000 400.000 400.000 402.500 405.000 405.000 405.000 410.000 410.000 410.000 410.000 410.000 415.000 415.000 415.000 420.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 444.622 450.725 459.154
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 81 69 0 0 63 66 69 78 78 60 0 0 78 72 63 63 69 72 78 78 78 72 72 78 78 75 78 75 72 75 78 75 75 69 69 72 0 66 69 0 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 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 66 0 60 0 66 0 60 66 69 57 63 69 72 72 69 69 69 69 69 69 69 72 66 69 66 69 63 69 63 60 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 -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 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 1.171875 -1.171875 -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 -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 -1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="177">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.771 90.0 95.0 100.0 105.0 110.0 115.0 118.408 120.0 125.0 126.817 130.0 135.0 135.225 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 329.78 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22 1.316 1.701 1.901 1.964 1.918 1.831 1.831 1.831 1.831 1.881 1.96 1.964 2.167 2.41 2.67 2.936 3.2 3.459 3.712 3.961 4.207 4.449 4.69 4.93 5.17 5.41 5.651 5.894 6.139 6.386 6.637 6.892 7.151 7.414 7.683 7.958 8.239 8.528 8.824 9.128 9.442 9.767 10.102 10.449 10.809 11.18 11.561 11.943 12.304 12.59 12.7 12.7 12.681 12.629 12.547 12.438 12.303 12.147 11.972 11.779 11.571 11.351 11.121 10.881 10.635 10.383 10.127 9.869 9.609 9.348 9.088 8.83 8.573 8.319 8.068 7.82 7.577 7.338 7.104 6.875 6.651 6.432 6.219 6.011 5.808 5.611 5.42 5.233 5.053 4.878 4.708 4.543 4.383 4.229 4.079 3.935 3.795 3.659 3.529 3.402 3.28 3.162 3.048 2.938 2.832 2.729 2.63 2.535 2.443 2.354 2.268 2.186 2.106 2.029 1.955 1.884 1.815 1.748 1.684 1.623 1.563 1.506 1.451 1.398 1.346 1.297 1.249 1.203 1.159 1.117 1.076 1.036 0.998 0.961 0.926 0.892 0.859 0.827 0.797 0.768 0.739 0.712 0.686 0.661 0.636 0.613 0.59 0.569 0.548 0.528 0.508 0.489 0.471 0.454 0.437 0.421 0.406 0.391 0.376 0.363 0.349 0.336 0.324 0.312 0.301 0.289 0.279 0.268 0.259 0.249 0.24 0.231 0.223 0.214 0.206

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.964" PeakHeight="110.0" Num="3" Error="0.0">
-29.012 11.042 -2.259
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.964" EndFrequency="12.7" PeakHeight="329.78" Num="5" zHalfNm="272.588" Error="1.864">
-159.413 -58.202 28.678 -4.999 -0.619
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="25.225" Depth="0.133"/>
<TopsideChapman PeakHeight="329.78" PeakDensity="2001116.6" PeakScaleHeight="41.621" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
