<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 09:40:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.03.08 (067) 09:40:00</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">
FF202606703080940009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.151" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.737" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="0.750" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="347.358" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.818" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="298.730" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="230.104" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.525" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="98.581" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="18.052" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="55.431" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="85.260" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.400" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="97">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 255.000 255.000 255.000 255.000 250.000 250.000 250.000 250.000 255.000 255.000 257.500 260.000 255.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 262.500 265.000 267.500 270.000 270.000 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 275.000 275.000 280.000 280.000 280.000 280.000 280.000 280.000 280.000 285.000 290.000 290.000 290.000 290.000 290.000 295.000 300.000 300.000 300.000 305.000 305.000 306.667 308.333 310.000 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 331.629 333.456 335.518 337.865 340.560 343.687 347.358 351.729 357.022 363.561 371.847 382.687 397.476 418.856 452.492 513.160 655.337
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 48 54 0 60 69 69 69 66 66 66 0 57 66 69 66 63 63 60 0 0 0 0 60 69 69 0 66 0 63 0 0 60 0 57 0 66 69 72 69 66 69 0 0 0 0 66 0 0 66 0 0 63 72 75 63 66 69 60 60 0 51 51 63 63 54 0 69 72 78 72 72 78 75 72 81 69 72 75 0 0 0 0 69 72 0 0 0 0 75 63 57 63 63 57 51 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.953125 1.171875
</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" >
89.816 90.0 95.0 100.0 105.0 110.0 115.0 119.243 120.0 125.0 128.486 130.0 135.0 137.729 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 298.73 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.216 1.217 1.575 1.759 1.818 1.779 1.682 1.682 1.682 1.682 1.704 1.778 1.818 1.892 2.054 2.213 2.37 2.526 2.681 2.839 2.999 3.164 3.334 3.513 3.701 3.902 4.117 4.351 4.608 4.89 5.203 5.543 5.902 6.255 6.579 6.857 7.089 7.279 7.433 7.557 7.655 7.731 7.787 7.825 7.845 7.85 7.85 7.84 7.82 7.788 7.746 7.695 7.635 7.568 7.492 7.411 7.323 7.23 7.131 7.029 6.923 6.814 6.702 6.587 6.471 6.353 6.234 6.114 5.993 5.872 5.751 5.631 5.51 5.391 5.272 5.154 5.037 4.922 4.808 4.695 4.583 4.474 4.366 4.26 4.155 4.052 3.952 3.853 3.756 3.661 3.567 3.476 3.387 3.299 3.214 3.13 3.048 2.968 2.89 2.814 2.739 2.667 2.596 2.526 2.459 2.393 2.329 2.266 2.205 2.145 2.087 2.031 1.976 1.922 1.87 1.819 1.769 1.721 1.674 1.628 1.584 1.54 1.498 1.457 1.417 1.378 1.34 1.303 1.268 1.233 1.199 1.166 1.133 1.102 1.072 1.042 1.013 0.985 0.958 0.932 0.906 0.881 0.856 0.833 0.81 0.787 0.766 0.744 0.724 0.704 0.684 0.665 0.647 0.629 0.611 0.594 0.578 0.562 0.546 0.531 0.516 0.502 0.488 0.475 0.461 0.449 0.436 0.424 0.412 0.401 0.39 0.379 0.368 0.358 0.348 0.338 0.329 0.32 0.311 0.302 0.294 0.286 0.278 0.27 0.263 0.255 0.248

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.818" PeakHeight="110.0" Num="3" Error="0.0">
-28.766 10.716 -2.134
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.818" EndFrequency="7.85" PeakHeight="298.73" Num="5" zHalfNm="230.104" Error="4.589">
-157.006 3.261 -15.073 9.834 -2.017
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="27.729" Depth="0.136"/>
<TopsideChapman PeakHeight="298.73" PeakDensity="764547.1" PeakScaleHeight="55.431" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
