<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 23:10:00.000"
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 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" >
2026.03.09 (068) 23:10:00</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">
FF202606803092310009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.510" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.735" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="532.154" 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="6.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="442.775" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="377.843" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.958" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="97.037" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.293" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="48.060" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="101.600" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.700" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="83">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
425.000 425.000 425.000 425.000 425.000 425.000 425.000 430.000 430.000 430.000 430.000 435.000 440.000 441.000 442.000 443.000 444.000 445.000 445.000 445.000 450.000 450.000 451.667 453.333 455.000 460.000 460.000 460.000 460.000 460.000 460.000 460.000 460.000 465.000 470.000 455.000 475.000 470.000 470.000 475.000 472.500 470.000 473.333 476.667 480.000 480.000 480.000 485.000 485.000 485.000 485.000 495.000 485.000 490.000 495.000 500.000 505.000 505.000 505.000 505.000 510.000 511.250 512.500 513.750 515.000 517.000 519.000 519.832 520.758 521.796 522.968 524.301 525.830 527.602 529.681 532.154 535.144 538.832 543.495 549.579 557.850 569.746 588.318
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 0 66 0 63 57 60 63 63 66 66 63 0 0 0 0 66 66 69 63 66 0 0 66 63 60 72 72 78 72 63 69 0 63 54 60 69 69 69 0 66 63 60 63 66 69 66 66 69 60 57 66 63 60 69 57 63 0 63 63 0 57 0 57 0 0 0 0 60 63 0 60 0 54 54 0 57 54 51 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 0.390625 -1.953125 0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 2.734375 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 2.734375 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 2.734375 -1.171875 -2.734375 -2.734375 -1.953125 -2.734375 2.734375 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 2.734375 2.734375 1.953125
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 144.226 145.0 150.0 155.0 160.0 165.0 170.0 175.0 178.453 180.0 185.0 190.0 195.0 200.0 205.0 210.0 212.679 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 442.775 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.344 0.33 0.31 0.283 0.244 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.207 0.229 0.252 0.274 0.297 0.319 0.342 0.354 0.386 0.454 0.525 0.603 0.69 0.788 0.899 1.024 1.166 1.324 1.5 1.691 1.896 2.114 2.343 2.58 2.825 3.076 3.333 3.594 3.86 4.131 4.405 4.683 4.965 5.251 5.541 5.835 6.132 6.433 6.737 7.044 7.354 7.665 7.979 8.292 8.604 8.913 9.215 9.507 9.783 10.036 10.259 10.44 10.57 10.64 10.65 10.648 10.627 10.586 10.527 10.449 10.357 10.249 10.129 9.997 9.855 9.703 9.544 9.378 9.206 9.029 8.849 8.665 8.479 8.291 8.102 7.913 7.724 7.536 7.348 7.162 6.978 6.795 6.615 6.437 6.262 6.09 5.921 5.755 5.592 5.433 5.277 5.124 4.975 4.829 4.686 4.548 4.412 4.28 4.151 4.026 3.904 3.785 3.67 3.558 3.449 3.342 3.239 3.139 3.042 2.948 2.856 2.767 2.681 2.597 2.515 2.437 2.36 2.286 2.214 2.144 2.077 2.011 1.948 1.886 1.826 1.769 1.713 1.658 1.606 1.555 1.505 1.458 1.411 1.366 1.323 1.281 1.24 1.201 1.162 1.125 1.089 1.055 1.021 0.989 0.957 0.927 0.897 0.868 0.841 0.814 0.788 0.763 0.738 0.715 0.692 0.67 0.648 0.628 0.608 0.588 0.569 0.551 0.534 0.517 0.5 0.484 0.469

</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="10.65" PeakHeight="442.775" Num="5" zHalfNm="377.843" Error="3.388">
-219.823 -22.467 19.312 -10.486 3.368
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="102.679" Depth="0.154"/>
<TopsideChapman PeakHeight="442.775" PeakDensity="1407227.0" PeakScaleHeight="48.06" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
