<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 02:40:00.000"
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" >
2026.03.08 (067) 02:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606703080240009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="14.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.416" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="50.049" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="15.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="13.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="305.000" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="279.205" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.556" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.980" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="52.991" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="30.532" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.519" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="48.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.730" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="240">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 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 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 12.75 12.8 12.85 12.9 12.95 13.0 13.05 13.1 13.15 13.2 13.25 13.3 13.35 13.4 13.45 13.5 13.55 13.6 13.65 13.7 13.75 13.8 13.85 13.9 13.95 14.0 14.05 14.1 14.15 14.2 14.25 14.3 14.35 14.4 14.45 14.5 14.55 14.6 14.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 217.500 215.000 215.000 216.250 217.500 218.750 220.000 222.500 225.000 215.000 230.000 225.000 227.500 230.000 235.000 232.500 230.000 225.000 226.667 228.333 230.000 230.000 230.000 230.000 230.000 230.000 230.000 225.000 227.500 230.000 232.500 235.000 235.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 226.667 228.333 230.000 230.000 230.000 230.000 230.833 231.667 232.500 233.333 234.167 235.000 235.833 236.667 237.500 238.333 239.167 240.000 240.000 235.000 240.000 240.000 239.643 239.286 238.929 238.571 238.214 237.857 237.500 237.143 236.786 236.429 236.071 235.714 235.357 235.000 235.000 236.250 237.500 238.750 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.577 241.154 241.731 242.308 242.885 243.462 244.038 244.615 245.192 245.769 246.346 246.923 247.500 248.077 248.654 249.231 249.808 250.385 250.962 251.538 252.115 252.692 253.269 253.846 254.423 255.000 255.000 255.000 255.000 257.500 260.000 260.000 260.000 260.000 260.000 260.000 255.000 260.000 260.000 260.000 255.000 255.000 255.000 257.500 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 267.500 270.000 270.000 270.000 270.000 270.000 270.000 265.000 265.000 265.000 260.000 260.000 260.000 260.000 275.000 275.000 270.000 270.000 270.000 270.000 270.000 275.000 272.500 270.000 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 276.000 277.000 278.000 279.000 280.000 285.000 285.000 285.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 310.000 310.000 315.000 315.000 320.000 320.000 325.000 326.703 328.774 331.347 334.632 338.968 344.959 353.774 368.025 394.987
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 69 66 0 0 0 75 0 60 57 60 69 0 63 66 0 66 69 0 0 63 63 0 0 0 0 63 66 0 69 0 63 66 72 0 0 0 72 0 69 69 72 63 75 69 0 66 57 0 66 78 72 0 72 0 0 72 0 75 0 75 72 0 0 0 66 69 81 63 0 0 0 0 0 0 0 0 78 72 0 0 84 84 84 69 0 78 0 78 78 0 78 69 0 75 81 0 84 75 81 81 87 0 78 84 78 75 78 0 84 81 75 81 84 72 75 0 75 81 81 81 75 69 81 0 66 0 66 69 0 75 78 72 63 0 69 75 78 75 84 0 78 81 81 75 69 75 78 0 57 57 54 66 66 60 72 69 72 72 0 69 51 51 51 69 54 66 72 69 63 66 69 69 72 0 63 60 66 72 66 72 69 0 72 0 75 75 72 0 72 75 75 78 75 72 78 78 0 0 0 69 72 0 72 72 69 69 72 63 72 72 0 69 60 0 0 66 0 69 60 63 72 69 66 63 42 63 63 69 66 63 63 63 60 63 63 54 51 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="127">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 134.5 135.0 140.0 145.0 150.0 155.0 159.0 160.0 165.0 170.0 175.0 180.0 183.5 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 279.205 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.349 0.333 0.306 0.262 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.206 0.238 0.269 0.301 0.332 0.354 0.398 0.579 0.84 1.228 1.802 2.61 3.641 4.829 6.093 7.37 8.613 9.791 10.878 11.854 12.702 13.41 13.966 14.361 14.589 14.65 14.649 14.589 14.448 14.236 13.964 13.643 13.281 12.887 12.469 12.033 11.587 11.134 10.68 10.228 9.78 9.34 8.91 8.49 8.083 7.689 7.309 6.944 6.592 6.255 5.933 5.625 5.331 5.051 4.784 4.529 4.288 4.058 3.84 3.633 3.437 3.251 3.074 2.907 2.749 2.599 2.457 2.323 2.196 2.075 1.962 1.854 1.752 1.656 1.565 1.479 1.398 1.321 1.248 1.179 1.114 1.053 0.995 0.94 0.888 0.839 0.793 0.749 0.708 0.669 0.632 0.597 0.564 0.533 0.504 0.476 0.45 0.425 0.401 0.379 0.358 0.339 0.32 0.302 0.286 0.27 0.255 0.241 0.228 0.215 0.203

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="14.65" PeakHeight="279.205" Num="5" zHalfNm="242.556" Error="0.922">
-106.013 15.052 -5.204 0.183 0.277
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.154"/>
<TopsideChapman PeakHeight="279.205" PeakDensity="2662810.2" PeakScaleHeight="27.519" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
