<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 15:30:00.000"
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 55 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 25% 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) 15:30:00</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">
FF202629510221530009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="7.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.006" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.147" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="8.100" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="745.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="745.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="120.000" Name="h`Es" 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="88" Val="7.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="780.000" 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="3.371" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.352" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="427.619" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="229.531" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.077" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="5.100" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="228.813" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="39.553" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="130.445" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="339.970" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.140" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="6.900" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
745.000 745.000 750.000 750.000 755.000 755.000 760.000 762.500 765.000 767.500 770.000 772.500 775.000 780.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 63 60 63 60 54 54 0 0 0 0 0 54 48
</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 1.953125 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="61">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
130.000 130.000 130.000 130.000 130.000 129.000 128.000 127.000 126.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 125.000 122.500 120.000 120.000 122.500 125.000 125.000 125.000 120.000 120.000 120.000 120.000 120.000 120.000 120.000 120.000 120.000 120.000 120.000 120.000 120.625 121.250 121.875 122.500 123.125 123.750 124.375 125.000 125.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 57 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 0 0 0 0 60 0 0 0 0 0 0 0 57 63 0 63 63 60 60 63 60 66 60 0 0 0 0 63 0 0 0 0 57 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 -1.171875 -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 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 1.171875 1.171875 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 1.171875 1.171875 0.390625 1.171875 0.390625 0.390625 -0.390625 0.390625 0.390625 1.171875 1.171875 1.171875 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" >
89.486 90.0 95.0 100.0 105.0 110.0 111.629 113.259 114.888 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 427.619 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.268 2.917 3.261 3.371 3.248 3.248 3.371 3.373 3.463 3.546 3.627 3.708 3.788 3.868 3.951 4.034 4.12 4.207 4.296 4.387 4.478 4.571 4.663 4.754 4.845 4.934 5.021 5.106 5.188 5.268 5.346 5.421 5.494 5.566 5.635 5.702 5.767 5.831 5.894 5.955 6.015 6.073 6.131 6.188 6.243 6.298 6.352 6.406 6.459 6.512 6.564 6.615 6.667 6.718 6.769 6.82 6.871 6.922 6.973 7.025 7.077 7.129 7.182 7.235 7.29 7.345 7.4 7.456 7.507 7.544 7.55 7.55 7.548 7.543 7.537 7.529 7.519 7.507 7.493 7.478 7.46 7.441 7.421 7.399 7.375 7.35 7.323 7.295 7.266 7.236 7.204 7.172 7.138 7.103 7.067 7.03 6.992 6.954 6.914 6.874 6.833 6.791 6.748 6.705 6.661 6.617 6.572 6.527 6.481 6.435 6.388 6.341 6.294 6.247 6.199 6.15 6.102 6.053 6.005 5.956 5.907 5.857 5.808 5.759 5.71 5.66 5.611 5.561 5.512 5.463 5.413 5.364 5.315 5.266 5.217 5.168 5.12 5.071 5.023 4.975 4.927 4.879 4.832 4.784 4.737 4.69 4.644 4.597 4.551 4.505 4.46 4.414 4.369 4.325 4.28 4.236 4.192 4.148 4.105 4.062 4.02 3.977 3.935 3.893 3.852 3.811 3.77 3.73 3.69 3.65 3.611 3.571 3.533 3.494 3.456 3.418 3.381 3.344 3.307 3.271 3.235 3.199 3.163 3.128 3.094 3.059

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.371" PeakHeight="110.0" Num="3" Error="0.0">
-30.487 13.131 -3.158
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.371" EndFrequency="7.55" PeakHeight="427.619" Num="5" zHalfNm="229.531" Error="11.854">
-258.042 -90.501 54.226 -24.915 6.501
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.888" Depth="0.123"/>
<TopsideChapman PeakHeight="427.619" PeakDensity="707227.06" PeakScaleHeight="130.445" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
