<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 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="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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, 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" >
2026.10.23 (296) 18:10:00</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">
FF202629610231810009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.652" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.822" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="10.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="10.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="405.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="405.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.897" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="10.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="10.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="335.409" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="232.879" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.192" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="139.333" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.688" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.103" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="153.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.680" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="41">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
405.000 406.250 407.500 408.750 410.000 415.000 415.000 415.000 420.000 420.000 425.000 425.000 425.000 430.000 430.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 460.000 460.000 465.000 465.000 470.000 474.201 478.798 483.851 489.429 495.620 502.531 510.294 519.079 529.101 540.640 554.069 569.896 588.823
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 66 0 0 63 0 0 0 0 54 54 0 0 0 0 0 0 0 0 0 0 57 0 0 39 51 54 54 54 0 0 54 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 1.171875 -1.953125 -2.734375 -1.171875 -2.734375 -0.390625 1.171875
</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" >
89.563 90.0 95.0 100.0 105.0 110.0 113.682 115.0 117.365 120.0 121.047 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 335.409 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.947 2.508 2.803 2.897 2.775 2.775 2.775 2.862 2.897 3.063 3.265 3.466 3.672 3.886 4.11 4.344 4.589 4.845 5.111 5.385 5.664 5.945 6.227 6.507 6.784 7.056 7.324 7.587 7.845 8.098 8.345 8.588 8.826 9.059 9.288 9.513 9.733 9.95 10.161 10.369 10.571 10.767 10.956 11.137 11.309 11.469 11.615 11.743 11.849 11.929 11.981 12.0 12.0 11.996 11.981 11.956 11.923 11.88 11.829 11.77 11.704 11.63 11.55 11.464 11.372 11.274 11.172 11.065 10.954 10.84 10.721 10.6 10.476 10.349 10.22 10.089 9.956 9.822 9.687 9.551 9.414 9.276 9.138 9.0 8.862 8.724 8.586 8.448 8.311 8.175 8.039 7.904 7.771 7.638 7.506 7.375 7.246 7.118 6.991 6.865 6.741 6.619 6.498 6.378 6.26 6.144 6.029 5.916 5.804 5.694 5.586 5.479 5.374 5.27 5.169 5.068 4.97 4.873 4.778 4.684 4.592 4.501 4.412 4.325 4.239 4.155 4.072 3.991 3.911 3.833 3.756 3.68 3.606 3.533 3.462 3.392 3.323 3.256 3.19 3.125 3.061 2.999 2.938 2.878 2.819 2.761 2.705 2.65 2.595 2.542 2.49 2.439 2.389 2.339 2.291 2.244 2.198 2.153 2.108 2.065 2.022 1.98 1.939 1.899 1.86 1.822 1.784 1.747 1.711 1.675 1.641 1.607 1.573 1.541 1.509 1.477 1.447 1.417 1.387 1.359 1.33 1.303 1.276 1.249 1.223 1.198

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.897" PeakHeight="110.0" Num="3" Error="0.0">
-30.107 12.573 -2.903
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.897" EndFrequency="12.0" PeakHeight="335.409" Num="5" zHalfNm="232.879" Error="3.486">
-202.932 -19.912 13.369 -7.253 2.366
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.047" Depth="0.122"/>
<TopsideChapman PeakHeight="335.409" PeakDensity="1786600.5" PeakScaleHeight="74.103" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
