<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-01-30 -030 10:40:00.000"
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="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: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.01.30 (030) 10:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.12" 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">
FF202603001301040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.937" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.232" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="345.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.478" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="316.040" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="212.186" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.579" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="146.187" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="28.425" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.167" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="136.770" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.770" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="102">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 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 8.15 8.2 8.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 225.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 222.500 225.000 227.500 230.000 232.500 235.000 237.500 240.000 245.000 245.000 247.500 250.000 250.000 250.000 250.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 261.667 263.333 265.000 267.500 270.000 270.000 270.000 270.000 270.000 270.000 271.667 273.333 275.000 275.000 275.000 275.000 277.500 280.000 281.667 283.333 285.000 290.000 295.000 295.000 295.000 295.000 300.000 300.000 305.000 305.000 310.000 310.000 310.000 315.000 315.000 320.000 320.000 325.000 325.000 330.000 330.000 335.000 335.000 340.000 345.000 345.000 345.000 355.000 360.000 365.000 365.000 370.000 375.000 380.000 390.000 395.000 400.000 410.000 420.000 425.000 440.000 450.000 465.000 485.000 510.000 540.000 580.000 636.499
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 60 51 60 0 57 0 57 54 57 54 0 0 0 0 0 0 0 54 48 57 0 60 63 0 57 63 63 63 63 63 63 63 0 0 66 0 0 0 66 0 66 63 0 51 66 63 66 51 0 63 0 0 0 63 54 0 66 66 63 63 57 63 57 63 66 63 69 60 69 60 66 63 66 63 66 66 63 69 69 66 63 57 66 69 66 66 66 69 66 69 66 66 69 69 66 66 60 57 54 51
</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 -2.734375 0.390625 1.171875 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 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
</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" >
89.644 90.0 95.0 100.0 105.0 110.0 115.0 115.693 120.0 121.386 125.0 127.079 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 316.04 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.664 2.146 2.398 2.478 2.382 2.353 2.353 2.353 2.432 2.478 2.567 2.717 2.867 3.021 3.178 3.342 3.513 3.693 3.882 4.082 4.292 4.513 4.745 4.985 5.231 5.479 5.727 5.969 6.204 6.427 6.638 6.835 7.018 7.186 7.34 7.48 7.607 7.721 7.823 7.913 7.992 8.06 8.117 8.163 8.2 8.226 8.243 8.25 8.25 8.248 8.24 8.226 8.207 8.183 8.153 8.118 8.079 8.036 7.989 7.937 7.882 7.824 7.763 7.698 7.631 7.562 7.49 7.416 7.34 7.262 7.183 7.102 7.02 6.936 6.852 6.767 6.681 6.595 6.508 6.421 6.333 6.245 6.157 6.07 5.982 5.894 5.807 5.72 5.633 5.547 5.461 5.376 5.291 5.207 5.123 5.041 4.959 4.877 4.797 4.717 4.638 4.56 4.483 4.407 4.332 4.257 4.184 4.111 4.04 3.969 3.9 3.831 3.763 3.696 3.631 3.566 3.502 3.439 3.377 3.316 3.256 3.197 3.139 3.081 3.025 2.97 2.915 2.861 2.809 2.757 2.706 2.656 2.606 2.558 2.51 2.464 2.418 2.372 2.328 2.284 2.242 2.199 2.158 2.118 2.078 2.038 2.0 1.962 1.925 1.889 1.853 1.818 1.783 1.75 1.716 1.684 1.652 1.62 1.589 1.559 1.529 1.5 1.472 1.444 1.416 1.389 1.362 1.336 1.311 1.286 1.261 1.237 1.213 1.19 1.167 1.145 1.123 1.102 1.08 1.06 1.039 1.019 1.0 0.981 0.962 0.943

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.478" PeakHeight="110.0" Num="3" Error="0.0">
-29.691 11.977 -2.642
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.478" EndFrequency="8.25" PeakHeight="316.04" Num="5" zHalfNm="212.186" Error="3.339">
-196.464 15.772 -11.16 2.653 0.238
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.079" Depth="0.125"/>
<TopsideChapman PeakHeight="316.04" PeakDensity="844447.9" PeakScaleHeight="80.167" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
