<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-06 -065 17:00:00.000"
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: 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" >
2026.03.06 (065) 17:00:00</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">
FF202606503061700009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.420" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.504" 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="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="525.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.272" 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="4.305" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="394.734" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.730" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.090" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="175.012" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.972" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="97.010" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="204.880" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.590" 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" >
260.000 265.000 270.000 275.000 280.000 285.000 286.667 288.333 290.000 292.500 295.000 295.000 295.000 305.000 305.000 305.000 310.000 310.000 310.000 310.000 310.000 315.000 315.000 320.000 320.000 321.667 323.333 325.000 330.000 330.000 333.000 336.000 339.000 342.000 345.000 340.000 340.000 345.000 345.000 347.500 350.000 352.500 355.000 360.000 362.500 365.000 367.500 370.000 375.000 375.000 380.000 382.000 384.000 386.000 388.000 390.000 390.000 392.500 395.000 400.000 400.000 400.000 405.000 405.000 407.500 410.000 410.000 415.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 465.000 475.000 475.000 475.000 480.000 480.000 480.000 485.000 490.000 495.000 495.000 500.000 500.000 505.000 505.000 510.000 515.000 520.000 525.000 525.000 530.000 540.000 545.000 550.000 555.000 561.863 569.626 578.479 588.669 600.523 614.484 631.172 651.468 676.688 708.868 751.351
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 0 0 51 51 0 0 51 45 51 54 48 51 54 48 57 57 54 57 51 57 57 54 54 0 0 54 0 54 0 0 0 0 45 51 45 57 48 0 57 0 57 63 0 60 0 60 54 63 51 0 48 0 0 57 66 0 66 57 63 69 63 69 0 66 69 66 57 63 57 63 54 63 54 63 60 66 63 66 63 66 63 66 63 66 63 63 63 48 57 63 54 57 57 60 54 45 54 45 54 51 54 54 54 51 48 54 51 51 51 54 51 51 51 48 45 48 48 48 45 42 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 -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 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 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 1.171875 0.390625 -2.734375 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" >
89.502 90.0 95.0 100.0 105.0 110.0 112.038 114.077 115.0 116.115 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 394.734 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.201 2.832 3.165 3.272 3.15 3.15 3.205 3.272 3.377 3.511 3.645 3.78 3.914 4.05 4.188 4.327 4.467 4.61 4.754 4.9 5.048 5.198 5.349 5.503 5.658 5.815 5.973 6.133 6.295 6.457 6.621 6.785 6.951 7.117 7.284 7.451 7.618 7.785 7.953 8.12 8.286 8.452 8.617 8.78 8.942 9.102 9.26 9.416 9.568 9.716 9.86 10.0 10.133 10.26 10.38 10.491 10.593 10.684 10.763 10.829 10.882 10.92 10.943 10.95 10.95 10.947 10.938 10.924 10.905 10.881 10.853 10.82 10.782 10.74 10.695 10.645 10.592 10.535 10.475 10.413 10.347 10.278 10.207 10.133 10.057 9.979 9.899 9.817 9.733 9.648 9.561 9.473 9.384 9.293 9.202 9.109 9.016 8.922 8.828 8.733 8.638 8.542 8.446 8.35 8.253 8.157 8.061 7.964 7.868 7.772 7.676 7.581 7.486 7.391 7.297 7.203 7.11 7.017 6.925 6.833 6.742 6.651 6.562 6.473 6.384 6.297 6.21 6.124 6.038 5.954 5.87 5.787 5.705 5.624 5.544 5.464 5.386 5.308 5.231 5.155 5.08 5.005 4.932 4.859 4.788 4.717 4.647 4.578 4.509 4.442 4.376 4.31 4.245 4.181 4.118 4.056 3.994 3.934 3.874 3.815 3.757 3.7 3.643 3.587 3.532 3.478 3.424 3.372 3.32 3.269 3.218 3.168 3.119 3.071 3.023 2.976 2.93 2.884 2.84 2.795 2.752 2.709 2.666 2.625 2.584 2.543

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.272" PeakHeight="110.0" Num="3" Error="0.0">
-30.413 13.023 -3.108
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.272" EndFrequency="10.95" PeakHeight="394.734" Num="5" zHalfNm="263.73" Error="2.418">
-251.702 -35.39 9.624 -1.765 0.614
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.115" Depth="0.122"/>
<TopsideChapman PeakHeight="394.734" PeakDensity="1487624.1" PeakScaleHeight="97.01" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
