<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-11 -070 20:30:00.000"
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 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" >
2026.03.11 (070) 20:30:00</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">
FF202607003112030009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.519" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.826" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="9.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" 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="1.887" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="388.242" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="277.676" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.627" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="154.389" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.455" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="80.905" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="155.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.030" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="158">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 255.000 255.000 255.000 255.000 256.250 257.500 258.750 260.000 261.250 262.500 263.750 265.000 260.000 260.000 262.500 265.000 265.000 270.000 270.000 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 280.000 281.667 283.333 285.000 286.667 288.333 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 300.000 305.000 310.000 310.000 310.000 310.000 310.000 310.000 310.000 310.000 312.500 315.000 316.875 318.750 320.625 322.500 324.375 326.250 328.125 330.000 330.000 335.000 335.000 335.000 337.500 340.000 340.000 340.000 345.000 346.667 348.333 350.000 350.000 350.000 350.000 355.000 358.333 361.667 365.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 395.000 400.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 425.000 425.000 430.000 435.000 435.000 435.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 460.000 465.000 470.000 472.500 475.000 480.000 485.000 490.000 495.000 500.000 505.000 510.000 515.000 525.000 535.000 540.000 549.271 559.530 570.943 583.717 598.111 614.454 633.169 654.815 680.138
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 60 60 60 0 0 0 0 0 54 0 63 63 60 0 69 69 0 0 66 63 0 0 0 60 60 66 69 69 0 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 0 66 66 63 0 66 66 66 0 54 60 63 66 69 60 63 0 0 66 0 63 0 60 0 66 0 66 69 60 63 66 57 63 66 69 63 48 0 63 69 69 69 66 0 0 60 66 69 63 69 57 66 54 63 69 63 69 69 66 69 66 54 63 69 63 69 63 66 60 66 60 69 60 66 69 66 57 66 69 66 60 66 63 66 63 63 0 63 63 0 66 63 63 63 0 63 60 60 57 57 51 54 51 48 51 0 0 0 0 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 -2.734375 2.734375 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" >
89.794 90.0 95.0 100.0 105.0 110.0 115.0 118.843 120.0 125.0 127.686 130.0 135.0 136.529 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 388.242 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.218 1.264 1.634 1.826 1.887 1.845 1.752 1.752 1.752 1.752 1.787 1.864 1.887 1.979 2.102 2.219 2.336 2.455 2.579 2.708 2.844 2.989 3.144 3.31 3.491 3.686 3.896 4.122 4.362 4.615 4.877 5.144 5.413 5.682 5.946 6.206 6.46 6.707 6.948 7.183 7.411 7.633 7.849 8.06 8.265 8.465 8.659 8.848 9.031 9.208 9.38 9.544 9.702 9.851 9.992 10.123 10.243 10.35 10.443 10.52 10.581 10.623 10.646 10.65 10.65 10.643 10.629 10.607 10.579 10.544 10.503 10.456 10.403 10.345 10.282 10.215 10.142 10.066 9.986 9.902 9.815 9.725 9.631 9.536 9.438 9.337 9.235 9.131 9.026 8.919 8.811 8.701 8.591 8.481 8.369 8.257 8.145 8.033 7.921 7.808 7.696 7.584 7.472 7.361 7.25 7.14 7.03 6.921 6.813 6.706 6.599 6.493 6.389 6.285 6.182 6.08 5.979 5.88 5.781 5.684 5.588 5.492 5.399 5.306 5.214 5.124 5.035 4.947 4.86 4.775 4.691 4.608 4.526 4.445 4.366 4.288 4.211 4.135 4.061 3.987 3.915 3.844 3.774 3.705 3.638 3.571 3.506 3.441 3.378 3.316 3.255 3.195 3.135 3.077 3.02 2.964 2.909 2.855 2.802 2.75 2.698 2.648 2.598 2.55 2.502 2.455 2.409 2.364 2.32 2.276 2.233 2.191 2.15 2.109 2.07 2.03 1.992 1.955 1.918 1.881 1.846 1.811 1.777 1.743 1.71 1.678 1.646

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.887" PeakHeight="110.0" Num="3" Error="0.0">
-28.885 10.873 -2.194
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.887" EndFrequency="10.65" PeakHeight="388.242" Num="5" zHalfNm="277.676" Error="5.537">
-241.605 -10.905 4.238 -7.706 4.265
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="26.529" Depth="0.135"/>
<TopsideChapman PeakHeight="388.242" PeakDensity="1407227.0" PeakScaleHeight="80.905" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
