<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 13:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: 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" >
2026.03.05 (064) 13:40:00</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">
FF202606403051340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.671" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.377" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="295.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="295.000" 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="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="475.555" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.323" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.329" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="324.134" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.318" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.534" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="122.378" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="39.217" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="68.751" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="164.970" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.210" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="92">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 295.000 295.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 305.000 305.000 305.000 310.000 310.000 310.000 312.500 315.000 315.000 315.000 315.000 320.000 322.500 325.000 325.000 325.000 330.000 330.000 335.000 335.000 337.500 340.000 340.000 340.000 345.000 346.667 348.333 350.000 351.667 353.333 355.000 360.000 360.000 363.333 366.667 370.000 370.000 370.000 375.000 380.000 380.000 380.000 385.000 385.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 407.500 410.000 415.000 415.000 420.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 460.000 460.000 465.000 470.000 472.578 475.555 479.033 483.149 488.097 494.156 501.749 511.543 524.657 543.124
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 57 54 0 51 60 0 57 54 57 48 48 57 48 54 0 54 48 0 51 51 0 57 63 69 63 66 51 60 0 51 54 60 51 0 0 0 0 0 63 60 60 0 0 45 60 63 63 48 57 69 66 66 66 60 69 66 69 60 60 0 54 54 51 60 57 54 57 57 60 57 60 63 66 63 60 57 54 60 57 48 0 54 0 0 0 0 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 -0.390625 -0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 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 -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 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 0.390625 -0.390625 -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 2.734375 1.171875 0.390625 -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" >
89.494 90.0 95.0 100.0 105.0 110.0 111.825 113.651 115.0 115.476 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 324.134 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.235 2.876 3.215 3.323 3.2 3.2 3.291 3.323 3.523 3.715 3.893 4.065 4.234 4.401 4.569 4.736 4.905 5.075 5.246 5.418 5.59 5.764 5.939 6.114 6.289 6.465 6.64 6.816 6.991 7.167 7.342 7.517 7.691 7.866 8.04 8.215 8.389 8.563 8.737 8.91 9.083 9.255 9.426 9.593 9.756 9.909 10.046 10.158 10.23 10.25 10.25 10.243 10.226 10.199 10.164 10.12 10.068 10.008 9.941 9.868 9.788 9.703 9.613 9.518 9.418 9.314 9.207 9.097 8.983 8.867 8.749 8.629 8.507 8.383 8.259 8.133 8.007 7.88 7.753 7.625 7.498 7.371 7.244 7.118 6.993 6.868 6.744 6.62 6.498 6.377 6.257 6.139 6.021 5.905 5.79 5.677 5.566 5.455 5.347 5.24 5.134 5.03 4.928 4.827 4.728 4.63 4.535 4.44 4.348 4.257 4.167 4.08 3.993 3.909 3.826 3.744 3.664 3.586 3.509 3.434 3.36 3.287 3.216 3.147 3.078 3.011 2.946 2.882 2.819 2.757 2.697 2.638 2.58 2.523 2.468 2.414 2.36 2.308 2.258 2.208 2.159 2.111 2.064 2.019 1.974 1.93 1.887 1.846 1.805 1.764 1.725 1.687 1.649 1.613 1.577 1.542 1.507 1.474 1.441 1.409 1.377 1.346 1.316 1.287 1.258 1.23 1.203 1.176 1.149 1.124 1.099 1.074 1.05 1.026 1.003 0.981 0.959 0.938 0.917 0.896 0.876 0.856 0.837 0.818 0.8 0.782

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.323" PeakHeight="110.0" Num="3" Error="0.0">
-30.452 13.08 -3.134
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.323" EndFrequency="10.25" PeakHeight="324.134" Num="5" zHalfNm="227.318" Error="2.873">
-175.472 -50.196 20.002 -4.62 1.628
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.476" Depth="0.123"/>
<TopsideChapman PeakHeight="324.134" PeakDensity="1303505.0" PeakScaleHeight="68.751" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
