<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 11:50:00.000"
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 F2o 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" >
2026.03.02 (061) 11:50:00</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">
FF202606103021150009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.720" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.599" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="450.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.954" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.151" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="335.309" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.993" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.172" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="114.843" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.381" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="62.900" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="143.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="139">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 230.000 235.000 235.000 240.000 240.000 240.000 245.000 247.500 250.000 255.000 260.000 260.000 265.000 270.000 270.000 270.000 275.000 275.000 280.000 280.000 280.000 280.000 285.000 285.000 285.000 285.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 305.000 307.500 310.000 312.500 315.000 315.000 316.667 318.333 320.000 321.667 323.333 325.000 325.000 325.000 327.500 330.000 330.000 332.500 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 347.500 350.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 365.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 387.500 390.000 395.000 395.000 395.000 400.000 400.000 400.000 400.000 405.000 405.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 420.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 445.000 445.000 450.000 450.000 455.000 460.000 465.000 470.000 475.000 480.000 485.000 495.000 505.000 515.000 528.796 545.939
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 45 48 48 51 45 54 0 51 54 54 51 0 51 54 54 54 57 51 57 57 60 60 0 63 60 60 0 63 60 60 63 63 0 60 0 0 0 54 63 0 60 57 0 0 0 63 63 0 0 0 0 0 54 60 66 0 57 63 0 54 0 66 51 0 63 66 54 60 66 0 60 66 66 69 66 72 72 66 69 57 63 66 66 66 66 63 66 66 63 66 60 66 69 63 66 57 63 66 57 63 66 63 63 63 54 57 60 51 57 48 51 0 60 60 60 60 51 54 51 54 51 45 54 51 54 54 54 51 48 48 48 51 0 0 0 45 0
</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 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 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 2.734375 0.390625 -0.390625 0.390625 2.734375 0.390625 0.390625 -1.953125
</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" >
89.553 90.0 95.0 100.0 105.0 110.0 113.423 115.0 116.845 120.0 120.268 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 335.309 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.986 2.557 2.858 2.954 2.832 2.832 2.832 2.944 2.954 3.106 3.264 3.422 3.582 3.744 3.91 4.08 4.253 4.432 4.614 4.801 4.993 5.189 5.389 5.593 5.8 6.01 6.224 6.44 6.658 6.878 7.1 7.324 7.548 7.774 8.001 8.228 8.456 8.684 8.913 9.141 9.369 9.596 9.82 10.042 10.259 10.468 10.667 10.85 11.009 11.135 11.219 11.25 11.25 11.244 11.225 11.193 11.149 11.095 11.03 10.955 10.871 10.779 10.68 10.573 10.459 10.34 10.216 10.087 9.954 9.817 9.676 9.533 9.388 9.24 9.091 8.94 8.789 8.637 8.484 8.332 8.179 8.027 7.875 7.724 7.574 7.425 7.277 7.13 6.985 6.841 6.699 6.559 6.421 6.284 6.149 6.017 5.886 5.757 5.63 5.506 5.383 5.263 5.145 5.029 4.915 4.803 4.694 4.586 4.481 4.377 4.276 4.177 4.08 3.984 3.891 3.8 3.711 3.623 3.538 3.454 3.372 3.292 3.214 3.138 3.063 2.99 2.918 2.848 2.78 2.713 2.648 2.585 2.522 2.462 2.402 2.344 2.288 2.232 2.178 2.126 2.074 2.024 1.975 1.927 1.88 1.834 1.79 1.746 1.704 1.662 1.622 1.582 1.544 1.506 1.47 1.434 1.399 1.365 1.331 1.299 1.267 1.236 1.206 1.176 1.148 1.12 1.092 1.066 1.04 1.014 0.989 0.965 0.941 0.918 0.896 0.874 0.853 0.832 0.811 0.792 0.772 0.753 0.735 0.717 0.699 0.682

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.954" PeakHeight="110.0" Num="3" Error="0.0">
-30.156 12.645 -2.936
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.954" EndFrequency="11.25" PeakHeight="335.309" Num="5" zHalfNm="248.993" Error="2.812">
-180.045 -46.0 13.673 -3.839 1.17
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.268" Depth="0.122"/>
<TopsideChapman PeakHeight="335.309" PeakDensity="1570254.4" PeakScaleHeight="62.9" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
