<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 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" >
2026.03.09 (068) 19:30:00</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">
FF202606803091930009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.523" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.911" 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="12.950" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="12.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="512.000" 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="2.553" 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="377.826" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="281.825" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.680" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="131.603" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.022" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="69.174" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="151.640" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.460" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="189">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 215.000 215.000 220.000 223.000 226.000 229.000 232.000 235.000 240.000 241.875 243.750 245.625 247.500 249.375 251.250 253.125 255.000 255.000 255.000 255.000 255.000 257.500 260.000 260.000 261.000 262.000 263.000 264.000 265.000 270.000 270.833 271.667 272.500 273.333 274.167 275.000 280.000 281.429 282.857 284.286 285.714 287.143 288.571 290.000 290.000 290.000 290.000 290.000 295.000 295.000 297.500 300.000 300.000 300.000 305.000 305.000 305.000 306.667 308.333 310.000 310.000 310.000 312.500 315.000 315.000 317.500 320.000 320.000 322.500 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 337.500 340.000 342.500 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 352.500 355.000 355.000 360.000 365.000 366.667 368.333 370.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 395.000 397.500 400.000 400.000 402.500 405.000 407.500 410.000 410.000 410.000 410.000 411.667 413.333 415.000 415.000 415.000 415.000 415.000 418.750 422.500 426.250 430.000 425.000 426.667 428.333 430.000 432.500 435.000 435.000 435.000 440.000 442.500 445.000 447.500 450.000 450.000 453.333 456.667 460.000 455.000 460.000 465.000 465.000 467.500 470.000 470.000 472.500 475.000 480.000 482.500 485.000 490.000 490.000 495.000 497.500 500.000 504.000 508.000 512.000 516.000 520.000 527.500 532.249 537.477 543.260 549.693 556.892 565.000 574.203 584.738 596.918 611.159
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 48 51 48 0 48 0 0 48 51 0 0 48 0 0 0 0 0 57 0 51 51 0 51 54 0 0 0 0 51 51 0 0 0 54 0 54 51 0 0 0 0 54 0 51 51 0 0 54 57 60 0 54 57 60 51 0 60 0 0 54 57 60 0 57 60 0 60 66 0 63 72 75 75 72 75 75 69 72 72 0 69 0 66 72 72 78 75 75 75 78 72 0 75 72 75 66 0 0 63 72 75 63 72 57 63 69 72 66 69 75 66 69 72 72 72 69 63 66 69 60 66 48 60 60 63 66 0 0 63 63 60 57 45 0 0 0 48 60 0 0 57 0 57 0 51 57 0 0 0 45 51 0 0 42 51 0 45 51 45 51 51 0 51 51 0 51 51 51 51 0 51 0 0 54 0 57 0 57 45 57 0 51 45 48 45 45 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 2.734375 -0.390625 -0.390625 -1.171875 -0.390625 2.734375 1.953125 -0.390625 0.390625 -1.953125 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 1.953125 -0.390625 -0.390625 -0.390625 -2.734375 -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 -1.171875 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 -1.953125 -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
</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" >
89.629 90.0 95.0 100.0 105.0 110.0 115.0 115.317 120.0 120.633 125.0 125.95 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.826 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.231 1.714 2.21 2.47 2.553 2.444 2.429 2.429 2.429 2.531 2.553 2.661 2.792 2.925 3.061 3.201 3.346 3.496 3.654 3.819 3.992 4.173 4.364 4.563 4.771 4.988 5.212 5.443 5.679 5.92 6.164 6.41 6.658 6.906 7.154 7.401 7.647 7.892 8.136 8.378 8.619 8.858 9.096 9.332 9.567 9.8 10.032 10.263 10.492 10.72 10.945 11.168 11.386 11.6 11.807 12.005 12.188 12.351 12.487 12.587 12.642 12.65 12.649 12.637 12.613 12.578 12.532 12.475 12.409 12.334 12.25 12.159 12.06 11.954 11.842 11.725 11.601 11.474 11.341 11.205 11.066 10.923 10.777 10.629 10.48 10.328 10.175 10.021 9.866 9.71 9.554 9.398 9.242 9.086 8.931 8.776 8.622 8.469 8.317 8.166 8.016 7.867 7.72 7.575 7.431 7.288 7.148 7.009 6.872 6.737 6.603 6.472 6.342 6.215 6.089 5.965 5.844 5.724 5.606 5.49 5.377 5.265 5.155 5.047 4.941 4.837 4.735 4.635 4.537 4.44 4.345 4.253 4.162 4.072 3.985 3.899 3.815 3.733 3.652 3.573 3.496 3.42 3.345 3.273 3.201 3.131 3.063 2.996 2.931 2.866 2.804 2.742 2.682 2.623 2.565 2.509 2.454 2.4 2.347 2.295 2.244 2.195 2.146 2.099 2.052 2.007 1.963 1.919 1.877 1.835 1.794 1.755 1.716 1.678 1.64 1.604 1.568 1.533 1.499 1.466 1.433 1.402 1.37 1.34 1.31 1.281 1.252

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.553" PeakHeight="110.0" Num="3" Error="0.0">
-29.772 12.092 -2.691
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.553" EndFrequency="12.65" PeakHeight="377.826" Num="5" zHalfNm="281.825" Error="3.913">
-215.69 -47.338 17.436 -9.257 2.973
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.95" Depth="0.124"/>
<TopsideChapman PeakHeight="377.826" PeakDensity="1985390.9" PeakScaleHeight="69.174" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
