<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 18:30:00.000"
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" >
2026.03.09 (068) 18:30:00</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">
FF202606803091830009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.583" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.189" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="12.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="2.937" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.143" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="364.842" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="275.273" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.511" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="121.380" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.843" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.017" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="158.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.140" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="135">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7 12.75 12.8 12.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 315.000 317.500 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 335.000 337.222 339.444 341.667 343.889 346.111 348.333 350.556 352.778 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 365.000 368.333 371.667 375.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 387.500 390.000 390.000 390.000 390.000 390.000 395.000 395.000 395.000 397.500 400.000 400.000 400.000 400.000 400.000 402.500 405.000 405.000 405.000 410.000 410.000 410.000 410.000 410.000 410.000 412.500 415.000 415.000 415.000 415.000 415.000 415.000 417.500 420.000 420.000 422.500 425.000 427.500 430.000 435.000 435.000 435.000 435.000 435.000 436.667 438.333 440.000 445.000 445.000 450.000 450.000 455.000 455.000 455.000 460.000 450.000 465.000 455.000 470.000 470.000 470.000 474.000 478.000 482.000 486.000 490.000 492.500 495.000 495.000 500.000 495.000 501.250 507.500 513.750 520.000 525.000 531.250 537.500 543.750 551.407 559.919 569.438 580.152
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 54 0 51 57 60 63 63 60 66 63 60 63 63 60 63 66 66 63 51 0 0 57 0 0 0 0 0 60 66 69 69 69 66 69 72 66 69 69 69 66 63 0 0 63 69 69 63 66 54 60 69 0 60 63 69 69 66 66 69 66 0 66 63 69 63 66 0 66 66 63 63 0 63 63 0 60 0 63 0 63 0 60 45 0 57 57 0 0 0 57 42 0 51 0 57 0 0 57 51 54 45 54 45 0 54 48 42 45 45 45 54 54 0 48 0 0 45 0 51 54 54 42 0 0 0 48 48 0 0 0 48 48 0 42
</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 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 -1.953125 -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
</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" >
89.556 90.0 95.0 100.0 105.0 110.0 113.498 115.0 116.996 120.0 120.494 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.842 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.236 1.974 2.542 2.842 2.937 2.815 2.815 2.815 2.92 2.937 3.141 3.352 3.555 3.75 3.941 4.128 4.314 4.498 4.681 4.863 5.046 5.229 5.413 5.598 5.784 5.972 6.161 6.352 6.545 6.74 6.938 7.138 7.341 7.546 7.755 7.966 8.181 8.399 8.62 8.845 9.074 9.306 9.542 9.781 10.024 10.269 10.518 10.769 11.021 11.272 11.522 11.768 12.004 12.227 12.43 12.603 12.737 12.822 12.85 12.85 12.842 12.821 12.787 12.741 12.683 12.614 12.534 12.446 12.348 12.243 12.129 12.009 11.883 11.751 11.613 11.471 11.324 11.174 11.021 10.865 10.706 10.545 10.383 10.219 10.054 9.889 9.723 9.557 9.391 9.225 9.059 8.895 8.731 8.568 8.406 8.246 8.087 7.929 7.774 7.619 7.467 7.317 7.168 7.022 6.877 6.735 6.594 6.456 6.32 6.186 6.055 5.925 5.798 5.673 5.551 5.43 5.312 5.195 5.081 4.97 4.86 4.752 4.647 4.544 4.442 4.343 4.246 4.15 4.057 3.966 3.876 3.788 3.703 3.619 3.537 3.456 3.377 3.3 3.225 3.151 3.079 3.009 2.94 2.872 2.806 2.742 2.679 2.617 2.557 2.498 2.44 2.384 2.329 2.275 2.222 2.171 2.121 2.072 2.024 1.977 1.931 1.886 1.842 1.799 1.758 1.717 1.677 1.638 1.6 1.563 1.526 1.491 1.456 1.422 1.389 1.357 1.325 1.294 1.264 1.235 1.206 1.178 1.15 1.123 1.097 1.072 1.047

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.937" PeakHeight="110.0" Num="3" Error="0.0">
-30.142 12.624 -2.926
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.937" EndFrequency="12.85" PeakHeight="364.842" Num="5" zHalfNm="275.273" Error="2.393">
-205.755 -58.4 20.87 -0.984 -0.079
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="10.494" Depth="0.122"/>
<TopsideChapman PeakHeight="364.842" PeakDensity="2048666.2" PeakScaleHeight="66.017" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
