<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 14:50:00.000"
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: 75% PACIFIC flags: Multiple candidates for F2o cusp, Trace overlaps while constructing baseline</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) 14:50:00</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">
FF202606103021450009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.669" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.222" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.300" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="486.713" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.402" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.365" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="339.423" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="252.175" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.114" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="108.399" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="41.459" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="62.216" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="161.220" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="124">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 222.500 230.000 235.000 241.667 248.333 255.000 261.667 268.333 275.000 280.000 285.000 290.000 292.857 295.714 298.571 301.429 304.286 307.143 310.000 315.000 315.000 315.000 317.273 319.545 321.818 324.091 326.364 328.636 330.909 333.182 335.455 337.727 340.000 345.000 345.000 346.000 347.000 348.000 349.000 350.000 350.000 360.000 355.000 355.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 367.500 370.000 370.000 370.000 375.000 375.000 375.000 375.000 380.000 382.500 385.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 395.000 400.000 400.000 400.000 405.000 405.000 405.000 410.000 412.500 415.000 415.000 420.000 421.667 423.333 425.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 445.000 450.000 450.000 450.000 455.000 455.000 457.500 460.000 460.000 463.333 466.667 470.000 470.000 475.000 475.000 475.000 476.766 478.763 481.041 483.663 486.713 490.305 494.599 499.821 506.309 514.589 525.519
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 0 48 45 0 0 0 0 0 48 51 48 48 0 0 0 0 0 0 54 57 54 51 0 48 0 0 0 0 0 0 54 0 51 48 45 0 45 0 0 57 57 0 60 60 54 57 57 60 57 0 57 57 0 57 60 57 57 57 54 54 54 0 45 51 63 63 66 66 63 66 69 63 66 69 66 66 69 66 48 60 66 48 0 0 54 63 57 57 57 54 57 54 57 48 54 60 57 60 60 57 60 51 57 54 0 0 48 51 45 48 48 48 45 0 0 0 0 60 54 51 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 -2.734375 1.171875 -0.390625 2.734375 -1.171875 0.390625 -0.390625 0.390625 0.390625 0.390625 -1.953125 0.390625 2.734375 -1.953125 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 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 -2.734375
</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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.504 113.007 114.511 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 339.423 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.289 2.944 3.291 3.402 3.279 3.279 3.402 3.416 3.564 3.711 3.858 4.005 4.153 4.302 4.451 4.601 4.752 4.904 5.057 5.211 5.365 5.521 5.678 5.836 5.995 6.156 6.318 6.481 6.645 6.811 6.979 7.148 7.319 7.491 7.666 7.843 8.022 8.204 8.388 8.575 8.765 8.958 9.155 9.355 9.558 9.765 9.975 10.186 10.396 10.598 10.778 10.908 10.95 10.95 10.942 10.92 10.887 10.841 10.785 10.719 10.643 10.558 10.466 10.365 10.258 10.145 10.026 9.902 9.774 9.641 9.505 9.366 9.224 9.08 8.934 8.787 8.639 8.489 8.339 8.189 8.039 7.889 7.739 7.59 7.442 7.295 7.149 7.004 6.86 6.718 6.578 6.439 6.302 6.167 6.034 5.902 5.773 5.646 5.52 5.397 5.276 5.157 5.04 4.925 4.813 4.702 4.594 4.487 4.383 4.281 4.181 4.083 3.987 3.893 3.801 3.711 3.623 3.537 3.452 3.37 3.289 3.21 3.133 3.058 2.984 2.912 2.842 2.773 2.706 2.64 2.576 2.513 2.452 2.393 2.334 2.277 2.222 2.167 2.114 2.063 2.012 1.963 1.915 1.868 1.822 1.777 1.734 1.691 1.649 1.609 1.569 1.531 1.493 1.456 1.42 1.385 1.351 1.318 1.285 1.253 1.223 1.192 1.163 1.134 1.106 1.079 1.052 1.026 1.001 0.976 0.952 0.928 0.905 0.883 0.861 0.84 0.819 0.799 0.779 0.76 0.741 0.723 0.705 0.687 0.67 0.654

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.402" PeakHeight="110.0" Num="3" Error="0.0">
-30.508 13.163 -3.173
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.402" EndFrequency="10.95" PeakHeight="339.423" Num="5" zHalfNm="252.175" Error="3.946">
-171.811 -71.118 21.025 -3.437 0.429
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.511" Depth="0.123"/>
<TopsideChapman PeakHeight="339.423" PeakDensity="1487624.1" PeakScaleHeight="62.216" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
