<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 20:10:00.000"
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="1 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) 20:10:00</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">
FF202606103022010009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="13.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.678" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="35.484" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="2.100" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="2.210" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="99.619" Name="h`E" 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="12.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="450.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.188" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="364.872" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="288.533" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.682" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="107.908" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.780" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="57.429" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="124.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="197">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 12.7 12.75 12.8 12.85 12.9 12.95 13.0 13.05 13.1 13.15 13.2 13.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 245.000 242.500 240.000 245.000 245.000 246.250 247.500 248.750 250.000 250.000 250.000 250.000 250.000 255.000 255.000 255.000 255.000 257.143 259.286 261.429 263.571 265.714 267.857 270.000 270.000 271.667 273.333 275.000 280.000 280.000 282.500 285.000 287.500 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 305.000 306.250 307.500 308.750 310.000 310.000 310.000 315.000 315.000 315.000 315.000 316.500 318.000 319.500 321.000 322.500 324.000 325.500 327.000 328.500 330.000 330.000 330.000 335.000 336.667 338.333 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 346.667 348.333 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 356.667 358.333 360.000 361.667 363.333 365.000 365.000 365.000 366.667 368.333 370.000 370.000 370.000 371.667 373.333 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 382.500 385.000 385.000 385.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 395.000 395.000 395.000 400.000 400.000 400.000 400.000 405.000 405.000 406.667 408.333 410.000 411.667 413.333 415.000 415.000 420.000 421.667 423.333 425.000 425.000 426.667 428.333 430.000 431.667 433.333 435.000 436.667 438.333 440.000 442.500 445.000 450.000 450.000 450.000 455.000 457.979 461.178 464.621 468.337 472.361 476.732 481.497 486.712 492.444 498.774 505.800 513.644 522.458 532.434 543.817 556.927 572.191
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 0 63 66 66 0 0 0 54 57 0 0 45 63 0 63 60 0 0 0 0 54 0 0 63 0 0 69 66 69 0 0 51 57 63 66 69 63 66 66 66 66 69 69 69 69 69 0 0 0 69 66 66 0 0 51 0 0 0 0 0 0 0 0 0 0 66 69 72 66 0 0 51 57 0 63 0 0 66 63 66 69 0 0 66 69 72 75 75 72 75 75 75 75 72 72 63 0 0 0 0 0 72 72 72 0 0 66 69 66 0 0 63 63 63 0 69 69 69 0 63 66 0 66 0 66 66 0 63 66 54 0 63 63 60 57 60 60 0 60 57 0 0 60 0 57 57 0 0 54 54 54 0 0 42 0 0 57 57 48 0 0 54 57 0 0 0 0 0 0 0 0 54 0 54 54 0 0 54 0 54 51 54 51 42 0 48 51 0 51 0 48 0 0 0 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 1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 -2.734375 2.734375 -1.953125 -1.953125 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 1.171875 -2.734375 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="3">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.1 2.15 2.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
99.619 102.490 105.928
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -2.734375 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" >
89.705 90.0 95.0 100.0 105.0 110.0 115.0 117.192 120.0 124.384 125.0 130.0 131.576 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.872 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.225 1.482 1.914 2.139 2.21 2.148 2.08 2.08 2.08 2.091 2.182 2.21 2.304 2.444 2.588 2.736 2.888 3.044 3.206 3.373 3.545 3.723 3.908 4.099 4.296 4.501 4.712 4.931 5.157 5.39 5.632 5.881 6.138 6.403 6.677 6.958 7.247 7.544 7.848 8.16 8.478 8.803 9.133 9.468 9.806 10.147 10.487 10.826 11.16 11.486 11.8 12.099 12.375 12.624 12.839 13.015 13.145 13.224 13.25 13.25 13.24 13.211 13.165 13.103 13.025 12.934 12.829 12.712 12.584 12.447 12.3 12.145 11.983 11.814 11.64 11.461 11.277 11.09 10.9 10.708 10.514 10.318 10.122 9.925 9.728 9.531 9.335 9.14 8.946 8.754 8.563 8.374 8.187 8.002 7.82 7.64 7.463 7.288 7.116 6.947 6.781 6.618 6.458 6.3 6.146 5.995 5.847 5.701 5.559 5.42 5.284 5.15 5.02 4.892 4.768 4.646 4.527 4.411 4.297 4.186 4.078 3.972 3.869 3.769 3.67 3.575 3.481 3.39 3.301 3.215 3.13 3.048 2.968 2.889 2.813 2.739 2.666 2.596 2.527 2.46 2.395 2.332 2.27 2.209 2.151 2.093 2.038 1.984 1.931 1.879 1.829 1.78 1.733 1.687 1.642 1.598 1.555 1.514 1.473 1.434 1.396 1.358 1.322 1.287 1.252 1.219 1.186 1.154 1.123 1.093 1.064 1.036 1.008 0.981 0.955 0.929 0.904 0.88 0.856 0.833 0.811 0.789 0.768 0.748 0.727 0.708 0.689

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.21" PeakHeight="110.0" Num="3" Error="0.0">
-29.367 11.524 -2.452
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.21" EndFrequency="13.25" PeakHeight="364.872" Num="5" zHalfNm="288.533" Error="2.885">
-197.479 -42.722 7.007 -0.332 0.23
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="21.576" Depth="0.13"/>
<TopsideChapman PeakHeight="364.872" PeakDensity="2178194.8" PeakScaleHeight="57.429" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
