<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 05:40:00.000"
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) 05:40:00</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">
FF202606703080540009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.644" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.468" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="295.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="295.000" 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="5.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="426.060" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="404.115" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="303.402" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.384" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="141.271" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.259" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.176" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="112.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.820" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="58">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 300.000 300.000 300.000 302.500 305.000 305.000 305.000 307.143 309.286 311.429 313.571 315.714 317.857 320.000 320.000 320.000 325.000 330.000 335.000 335.000 335.000 337.500 340.000 345.000 345.000 355.000 355.000 360.000 360.000 360.000 365.000 370.000 380.000 375.000 380.000 385.000 395.000 395.000 400.000 407.500 415.000 420.000 420.000 426.060 432.807 440.365 448.887 458.574 469.679 482.539 497.607 515.504 537.109 563.708 597.258 640.895 699.971
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 60 66 69 0 66 72 75 0 0 75 0 75 0 72 0 0 66 66 60 63 60 0 66 72 66 63 72 69 72 69 69 69 57 63 66 66 63 66 66 0 63 66 51 0 63 63 63 63 63 63 66 60 60 57 0 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 -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 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.435 150.0 155.0 160.0 165.0 170.0 175.0 180.0 182.87 185.0 190.0 195.0 200.0 205.0 210.0 215.0 219.305 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 404.115 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.333 0.316 0.292 0.26 0.216 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.209 0.23 0.251 0.272 0.294 0.315 0.336 0.354 0.377 0.475 0.552 0.629 0.708 0.794 0.889 0.996 1.122 1.272 1.461 1.71 2.064 2.567 3.127 3.586 3.939 4.22 4.451 4.647 4.815 4.962 5.091 5.205 5.306 5.396 5.475 5.546 5.607 5.661 5.708 5.747 5.78 5.806 5.826 5.84 5.848 5.85 5.85 5.847 5.839 5.827 5.811 5.79 5.766 5.739 5.708 5.674 5.637 5.597 5.554 5.509 5.462 5.413 5.361 5.308 5.254 5.198 5.14 5.081 5.022 4.961 4.899 4.837 4.774 4.711 4.647 4.583 4.518 4.454 4.389 4.324 4.26 4.195 4.131 4.067 4.003 3.939 3.876 3.813 3.751 3.689 3.627 3.566 3.506 3.446 3.387 3.329 3.271 3.214 3.157 3.101 3.046 2.992 2.938 2.885 2.833 2.781 2.73 2.68 2.631 2.582 2.534 2.487 2.441 2.395 2.35 2.306 2.263 2.22 2.178 2.136 2.096 2.056 2.016 1.978 1.94 1.903 1.866 1.83 1.795 1.76 1.726 1.692 1.659 1.627 1.595 1.564 1.534 1.504 1.474 1.446 1.417 1.389 1.362 1.335 1.309 1.283 1.258 1.233 1.209 1.185 1.162 1.139 1.116 1.094 1.073 1.051 1.03 1.01 0.99 0.97 0.951 0.932 0.914 0.896 0.878 0.86

</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="5.85" PeakHeight="404.115" Num="5" zHalfNm="303.402" Error="2.586">
-233.186 76.579 -43.828 16.658 -1.033
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="109.305" Depth="0.154"/>
<TopsideChapman PeakHeight="404.115" PeakDensity="424596.78" PeakScaleHeight="77.176" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
