<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-26 -085 22:10:00.000"
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="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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: 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" >
2026.03.26 (085) 22:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608503262210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.285" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.796" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="360.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="360.000" 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="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="565.000" 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="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="481.057" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="394.474" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.685" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.343" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="40.224" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.694" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="127.160" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.950" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="159">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 360.625 361.250 361.875 362.500 363.125 363.750 364.375 365.000 367.500 370.000 367.500 365.000 365.000 367.500 370.000 372.500 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 385.000 388.333 391.667 395.000 395.000 395.000 395.000 395.000 395.000 395.000 400.000 401.250 402.500 403.750 405.000 405.000 410.000 410.000 410.000 410.000 410.000 411.500 413.000 414.500 416.000 417.500 419.000 420.500 422.000 423.500 425.000 425.000 425.000 425.000 425.000 430.000 430.000 430.000 430.000 430.000 435.000 437.500 440.000 440.000 440.000 440.000 442.500 445.000 450.000 450.000 450.000 450.000 450.000 455.000 455.000 455.000 460.000 460.000 460.000 465.000 465.000 470.000 470.000 470.000 475.000 475.000 480.000 480.000 480.000 485.000 485.000 490.000 490.000 495.000 500.000 500.000 505.000 505.000 505.000 510.000 515.000 515.000 515.000 517.500 520.000 520.000 520.000 526.667 533.333 540.000 540.000 545.000 547.500 550.000 552.500 555.000 557.500 560.000 562.500 565.000 575.000 577.500 580.000 585.000 590.000 595.000 600.000 605.000 611.667 618.333 625.000 635.000 635.000 640.000 650.000 655.000 667.500 678.626
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 0 0 0 0 0 0 75 0 69 0 72 0 0 60 0 66 69 48 51 0 63 60 72 72 72 0 75 72 69 0 72 72 0 0 69 66 0 48 69 0 0 0 66 69 63 51 0 63 72 72 0 0 0 63 69 57 60 63 69 60 0 0 0 72 0 0 0 0 0 60 63 63 72 75 66 66 72 72 75 69 0 54 66 72 69 0 72 63 57 0 75 75 72 75 75 75 78 75 72 72 66 63 75 69 63 63 57 75 75 75 72 72 72 60 69 60 66 69 63 51 63 57 0 63 63 63 0 0 63 60 63 0 0 0 0 0 0 0 48 48 0 54 45 0 0 45 45 0 0 48 48 48 45 48 48 0 42
</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="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.364 145.0 150.0 155.0 160.0 165.0 170.0 172.727 175.0 180.0 185.0 190.0 195.0 200.0 204.091 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 481.057 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.342 0.325 0.301 0.267 0.217 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.236 0.26 0.285 0.309 0.334 0.354 0.365 0.426 0.487 0.55 0.618 0.691 0.771 0.857 0.952 1.056 1.169 1.293 1.427 1.573 1.73 1.899 2.078 2.269 2.469 2.68 2.899 3.126 3.361 3.603 3.851 4.105 4.365 4.629 4.897 5.17 5.445 5.723 6.004 6.286 6.57 6.854 7.137 7.42 7.702 7.98 8.255 8.525 8.788 9.044 9.291 9.527 9.75 9.958 10.149 10.321 10.472 10.6 10.703 10.78 10.829 10.849 10.85 10.846 10.83 10.803 10.765 10.716 10.658 10.591 10.515 10.432 10.341 10.244 10.14 10.031 9.917 9.799 9.676 9.549 9.42 9.287 9.152 9.015 8.876 8.736 8.595 8.453 8.31 8.167 8.024 7.881 7.738 7.595 7.454 7.313 7.173 7.034 6.897 6.76 6.625 6.492 6.36 6.23 6.101 5.974 5.849 5.726 5.604 5.485 5.367 5.251 5.137 5.025 4.915 4.807 4.701 4.597 4.495 4.395 4.296 4.2 4.105 4.013 3.922 3.833 3.746 3.66 3.577 3.495 3.414 3.336 3.259 3.184 3.11 3.038 2.968 2.899 2.832 2.766 2.701 2.638 2.577 2.516 2.458 2.4 2.344 2.289 2.235 2.183 2.131 2.081 2.032 1.984 1.937 1.892 1.847 1.803 1.761 1.719 1.679 1.639 1.6 1.562 1.525 1.489 1.454

</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="10.85" PeakHeight="481.057" Num="5" zHalfNm="394.474" Error="5.64">
-275.989 -6.848 8.31 -4.853 2.414
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="94.091" Depth="0.154"/>
<TopsideChapman PeakHeight="481.057" PeakDensity="1460576.9" PeakScaleHeight="64.694" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
