<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 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="1 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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" >
2026.03.09 (068) 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">
FF202606803091340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="10.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.719" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.738" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="3.300" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="3.460" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="210.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="210.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="110.387" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="99.558" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="9.313" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.326" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.331" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="316.809" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="224.665" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.535" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="115.271" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="37.504" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.060" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="157.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.190" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.000 216.000 222.000 228.000 234.000 240.000 250.000 255.000 260.000 265.000 270.000 275.000 280.000 285.000 287.500 290.000 292.500 295.000 297.500 300.000 300.000 300.000 305.000 305.000 305.000 305.000 305.000 305.000 307.500 310.000 310.000 310.000 311.000 312.000 313.000 314.000 315.000 315.000 316.667 318.333 320.000 325.000 325.000 325.000 325.000 325.000 326.667 328.333 330.000 331.667 333.333 335.000 336.667 338.333 340.000 340.000 343.333 346.667 350.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 362.500 365.000 370.000 370.000 372.500 375.000 380.000 380.000 380.000 385.000 390.000 390.000 390.000 395.000 400.000 400.000 405.000 405.000 410.000 415.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 440.000 445.000 445.000 450.000 450.000 455.000 460.000 460.000 460.000 465.000 465.000 470.000 475.000 480.000 487.216 496.446 508.671 525.630
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 0 45 54 0 51 51 0 0 0 0 0 0 51 0 48 0 0 0 57 0 57 48 0 0 54 54 48 0 54 51 51 0 48 0 0 54 51 0 0 54 54 0 57 60 57 0 60 0 0 0 0 0 0 66 63 0 0 63 69 69 66 69 60 63 60 0 63 57 60 0 63 54 63 69 69 60 63 60 0 54 54 57 60 63 54 45 57 60 66 63 63 60 54 54 51 51 63 60 54 63 63 63 60 57 57 57 54 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.953125 1.171875 -1.953125 0.390625 0.390625 2.734375 -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 -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 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 -2.734375 2.734375 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="4">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.3 3.35 3.4 3.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
110.387 111.707 113.369 115.644
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 48 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 -0.390625 -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" >
90.0 95.0 99.558 100.0 101.371 103.183 104.996 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 316.809 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 3.015 3.46 3.452 3.332 3.332 3.46 3.46 3.611 3.752 3.889 4.023 4.157 4.292 4.429 4.568 4.711 4.856 5.005 5.158 5.314 5.474 5.638 5.805 5.975 6.149 6.324 6.502 6.681 6.861 7.043 7.225 7.407 7.589 7.772 7.954 8.136 8.318 8.5 8.681 8.861 9.041 9.22 9.397 9.571 9.738 9.896 10.034 10.14 10.196 10.2 10.198 10.185 10.162 10.129 10.086 10.035 9.975 9.908 9.833 9.752 9.665 9.572 9.473 9.37 9.263 9.151 9.036 8.918 8.798 8.675 8.55 8.423 8.294 8.165 8.035 7.903 7.772 7.64 7.508 7.377 7.245 7.114 6.984 6.855 6.726 6.598 6.472 6.346 6.222 6.099 5.978 5.858 5.739 5.622 5.507 5.394 5.281 5.171 5.063 4.956 4.851 4.747 4.645 4.546 4.447 4.351 4.256 4.164 4.072 3.983 3.895 3.809 3.725 3.642 3.561 3.481 3.404 3.327 3.253 3.179 3.108 3.038 2.969 2.902 2.836 2.771 2.708 2.647 2.586 2.527 2.47 2.413 2.358 2.304 2.251 2.199 2.149 2.099 2.051 2.004 1.958 1.912 1.868 1.825 1.783 1.742 1.701 1.662 1.624 1.586 1.549 1.513 1.478 1.444 1.41 1.378 1.346 1.314 1.284 1.254 1.225 1.196 1.169 1.141 1.115 1.089 1.064 1.039 1.015 0.991 0.968 0.945 0.923 0.902 0.881 0.86 0.84 0.821 0.801 0.783 0.764 0.747 0.729 0.712 0.696 0.679 0.663

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.46" PeakHeight="99.558" Num="3" Error="3.21">
-14.225 6.158 -1.491
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.46" EndFrequency="10.2" PeakHeight="316.809" Num="5" zHalfNm="224.665" Error="5.353">
-167.931 -56.142 14.865 -4.633 2.028
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.438" Depth="0.128"/>
<TopsideChapman PeakHeight="316.809" PeakDensity="1290818.9" PeakScaleHeight="66.06" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
