<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 15:40:00.000"
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="12.0">
<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" >
2026.10.22 (295) 15:40:00</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">
FF202629510221540009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.311" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.114" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="370.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="370.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="551.989" 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="3.359" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.346" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="431.692" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="266.596" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.159" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="226.012" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="83.008" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="124.226" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="241.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.980" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="88">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
370.000 370.000 370.000 370.000 375.000 377.500 380.000 380.000 380.000 385.000 385.000 385.000 385.000 390.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 405.000 408.195 411.391 414.586 417.782 420.977 424.172 427.368 430.563 433.759 436.954 440.150 443.345 446.540 449.736 452.931 456.127 459.322 462.517 465.713 468.908 472.104 475.299 478.495 481.690 484.885 488.081 491.276 494.472 497.667 500.862 504.058 507.253 510.449 513.644 516.840 520.035 523.230 526.426 529.621 532.817 536.012 539.207 542.403 545.598 548.794 551.989 555.835 560.050 564.690 570.000 575.000 580.000 590.000 595.000 605.000 615.000 630.000 645.000 665.000 685.000 715.000 750.000 795.000 865.000 970.000 1143.636
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 75 72 69 72 60 66 69 54 54 0 0 54 66 69 66 75 69 78 69 75 78 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
</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 2.734375 0.390625 1.953125 2.734375 1.171875 -1.953125 0.390625 -1.953125 -1.171875 2.734375 -0.390625 -0.390625 0.390625 -2.734375 -0.390625 -0.390625 1.953125 2.734375 2.734375 -1.171875 0.390625 0.390625 -1.953125 0.390625 -1.953125 -1.171875 2.734375 1.953125 -1.953125 -1.171875 -2.734375 -2.734375 0.390625 -2.734375 -1.953125 -0.390625 -1.171875 -2.734375 -0.390625 -0.390625 -1.171875 1.953125 2.734375 2.734375 -1.953125 1.171875 1.953125 -0.390625 -2.734375 0.390625 -2.734375 -1.953125 -0.390625 -2.734375 -2.734375 -0.390625 -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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.676 113.352 115.0 115.028 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 431.692 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.26 2.907 3.25 3.359 3.236 3.236 3.357 3.359 3.481 3.609 3.741 3.876 4.015 4.157 4.302 4.449 4.598 4.748 4.9 5.053 5.207 5.363 5.519 5.676 5.835 5.994 6.154 6.314 6.476 6.637 6.8 6.962 7.125 7.288 7.451 7.614 7.777 7.939 8.1 8.26 8.42 8.578 8.734 8.888 9.04 9.189 9.335 9.478 9.618 9.754 9.885 10.013 10.135 10.253 10.365 10.472 10.573 10.668 10.758 10.84 10.917 10.986 11.049 11.105 11.155 11.197 11.232 11.26 11.28 11.293 11.3 11.3 11.299 11.295 11.288 11.277 11.263 11.245 11.225 11.202 11.176 11.147 11.115 11.081 11.044 11.005 10.964 10.92 10.875 10.827 10.777 10.725 10.672 10.616 10.559 10.501 10.441 10.38 10.317 10.253 10.188 10.121 10.054 9.985 9.916 9.846 9.774 9.702 9.63 9.557 9.483 9.408 9.333 9.258 9.182 9.106 9.029 8.953 8.876 8.798 8.721 8.644 8.566 8.488 8.411 8.333 8.255 8.178 8.1 8.023 7.946 7.869 7.792 7.715 7.639 7.563 7.487 7.412 7.337 7.262 7.187 7.113 7.039 6.966 6.893 6.82 6.748 6.677 6.605 6.535 6.464 6.394 6.325 6.256 6.188 6.12 6.053 5.986 5.92 5.854 5.789 5.724 5.66 5.596 5.533 5.47 5.408 5.347 5.286 5.226 5.166 5.107 5.048 4.99 4.932 4.875 4.818 4.762 4.707 4.652 4.598 4.544 4.491 4.438 4.386 4.334

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.359" PeakHeight="110.0" Num="3" Error="0.0">
-30.478 13.118 -3.152
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.359" EndFrequency="11.3" PeakHeight="431.692" Num="5" zHalfNm="266.596" Error="5.289">
-311.851 -5.724 0.705 0.853 -0.647
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.028" Depth="0.123"/>
<TopsideChapman PeakHeight="431.692" PeakDensity="1584243.1" PeakScaleHeight="124.226" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
