<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 19:30:00.000"
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="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 F2x 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" >
2026.03.14 (073) 19:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607303141930009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.255" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.337" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" 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="0.500" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="625.000" 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="2.541" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="409.161" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="270.423" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.681" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="179.927" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.309" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="91.932" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="238.320" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.180" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="143">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 220.000 225.000 230.000 235.000 235.000 235.000 240.000 240.000 240.000 240.000 245.000 245.000 245.000 245.000 245.000 250.000 250.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 257.500 260.000 260.000 265.000 265.000 265.000 265.000 268.333 271.667 275.000 275.000 275.000 277.500 280.000 280.000 280.000 285.000 285.000 285.000 290.000 290.000 290.000 295.000 295.000 300.000 305.000 305.000 305.000 310.000 310.000 315.000 320.000 320.000 325.000 330.000 330.000 340.000 345.000 345.000 350.000 355.000 360.000 360.000 365.000 375.000 380.000 385.000 390.000 395.000 395.000 400.000 405.000 410.000 415.000 420.000 425.000 425.000 430.000 435.000 440.000 450.000 455.000 455.000 465.000 465.000 475.000 480.000 485.000 490.000 495.000 500.000 505.000 505.000 510.000 515.000 515.000 520.000 521.667 523.333 525.000 525.000 530.000 535.000 535.000 540.000 540.000 545.000 550.000 555.000 560.000 560.000 565.000 565.000 570.000 575.000 580.000 580.000 585.000 590.000 595.000 595.000 600.000 605.000 610.000 615.000 617.500 620.000 625.000 625.000 635.000 640.000 645.000 650.000 660.000 665.000 675.534
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 54 54 54 51 51 54 54 51 0 0 54 54 0 54 0 48 54 63 57 0 63 66 63 63 60 57 0 63 60 60 0 63 63 0 45 48 54 60 0 54 60 66 54 63 66 57 48 66 63 66 66 60 66 66 66 63 66 66 63 63 63 66 63 63 66 66 66 66 66 66 66 63 66 66 63 63 63 63 66 66 66 69 66 69 69 66 66 66 66 66 66 66 66 66 63 63 60 57 66 66 63 69 66 0 0 66 66 0 66 63 66 57 0 0 60 57 63 63 63 63 63 57 60 57 57 57 60 0 60 0 54 0 54 57 51 54 54 51 48 45 45 42
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 0.390625 -0.390625 2.734375 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 -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 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.171875 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -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" >
89.631 90.0 95.0 100.0 105.0 110.0 115.0 115.377 120.0 120.755 125.0 126.132 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 409.161 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.231 1.706 2.2 2.459 2.541 2.434 2.417 2.417 2.417 2.515 2.541 2.641 2.77 2.901 3.037 3.183 3.34 3.51 3.696 3.898 4.114 4.34 4.567 4.792 5.008 5.214 5.409 5.594 5.769 5.936 6.095 6.248 6.395 6.536 6.673 6.807 6.936 7.063 7.187 7.308 7.428 7.545 7.661 7.775 7.888 8.0 8.111 8.222 8.332 8.441 8.55 8.66 8.769 8.878 8.988 9.098 9.209 9.322 9.435 9.549 9.665 9.782 9.9 10.019 10.136 10.243 10.324 10.35 10.35 10.346 10.336 10.321 10.301 10.275 10.244 10.209 10.169 10.125 10.077 10.025 9.97 9.911 9.848 9.783 9.714 9.643 9.569 9.493 9.415 9.335 9.252 9.168 9.082 8.995 8.907 8.817 8.726 8.634 8.541 8.448 8.354 8.259 8.164 8.069 7.973 7.877 7.781 7.685 7.589 7.493 7.397 7.301 7.206 7.111 7.016 6.922 6.828 6.735 6.642 6.55 6.459 6.368 6.278 6.188 6.1 6.012 5.925 5.838 5.753 5.668 5.584 5.501 5.419 5.338 5.257 5.178 5.099 5.022 4.945 4.869 4.794 4.72 4.647 4.575 4.504 4.433 4.364 4.295 4.228 4.161 4.095 4.03 3.966 3.903 3.841 3.78 3.719 3.66 3.601 3.543 3.486 3.43 3.374 3.319 3.266 3.213 3.16 3.109 3.058 3.009 2.959 2.911 2.863 2.817 2.77 2.725 2.68 2.636 2.593 2.55 2.508 2.467 2.426 2.386 2.347 2.308 2.27

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.541" PeakHeight="110.0" Num="3" Error="0.0">
-29.759 12.074 -2.684
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.541" EndFrequency="10.35" PeakHeight="409.161" Num="5" zHalfNm="270.423" Error="6.072">
-251.58 -63.482 54.408 -29.579 7.204
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.132" Depth="0.124"/>
<TopsideChapman PeakHeight="409.161" PeakDensity="1329063.2" PeakScaleHeight="91.932" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
