<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-06 -065 21:20:00.000"
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: 70% PACIFIC flags: F2 cusps do not match</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) 21:20:00</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">
FF202606503062120009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.382" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.300" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="9.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.914" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="420.490" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="325.490" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.274" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="136.950" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="38.161" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="69.029" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="138.870" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="152">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 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 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" >
295.000 290.000 290.000 290.000 290.000 295.000 290.000 291.250 292.500 293.750 295.000 296.250 297.500 298.750 300.000 302.500 305.000 305.000 305.000 306.000 307.000 308.000 309.000 310.000 310.000 311.176 312.353 313.529 314.706 315.882 317.059 318.235 319.412 320.588 321.765 322.941 324.118 325.294 326.471 327.647 328.824 330.000 330.000 330.000 330.000 330.000 331.250 332.500 333.750 335.000 340.000 340.000 340.000 340.000 340.000 340.000 350.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 360.000 361.000 362.000 363.000 364.000 365.000 365.000 365.000 370.000 370.000 370.000 372.500 375.000 377.500 380.000 380.000 382.500 385.000 385.000 390.000 395.000 395.000 395.000 400.000 400.000 405.000 405.000 405.000 410.000 410.000 412.500 415.000 417.500 420.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 445.000 450.000 455.000 457.500 460.000 465.000 465.000 470.000 472.500 475.000 480.000 480.000 480.000 485.000 490.000 490.000 495.000 500.000 500.000 505.000 510.000 515.000 520.000 520.000 525.000 530.000 535.000 540.000 545.000 550.000 555.833 561.667 567.500 573.333 579.167 585.000 590.000 595.000 605.000 613.847 623.602 634.412 646.460
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 51 0 57 63 60 0 0 0 60 0 0 0 60 0 57 0 66 0 63 0 0 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 51 57 0 63 0 0 63 0 69 69 0 0 54 57 0 0 69 69 72 69 63 0 0 0 0 69 72 0 72 69 66 57 0 0 69 69 51 69 69 54 60 69 72 66 72 63 69 69 63 69 0 69 0 66 69 66 69 66 72 66 72 63 69 63 69 69 72 66 0 66 57 66 57 51 63 57 66 69 69 66 69 69 66 69 69 66 66 60 66 66 66 63 63 63 63 0 60 0 0 0 60 57 57 57 57 0 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -2.734375 1.953125 -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 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.374 95.0 100.0 105.0 110.0 115.0 120.0 125.0 129.351 130.0 135.0 140.0 145.0 148.702 150.0 155.0 160.0 165.0 168.053 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 420.49 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.608 0.792 0.885 0.914 0.899 0.852 0.768 0.654 0.654 0.654 0.654 0.654 0.654 0.671 0.739 0.806 0.873 0.914 0.962 1.068 1.167 1.264 1.366 1.473 1.589 1.715 1.855 2.009 2.181 2.373 2.584 2.814 3.061 3.318 3.582 3.848 4.113 4.375 4.632 4.885 5.133 5.377 5.616 5.851 6.082 6.31 6.534 6.756 6.975 7.191 7.405 7.617 7.826 8.033 8.237 8.438 8.635 8.828 9.017 9.199 9.374 9.539 9.693 9.833 9.955 10.056 10.133 10.181 10.2 10.2 10.196 10.182 10.158 10.125 10.084 10.034 9.978 9.913 9.843 9.766 9.683 9.595 9.502 9.405 9.304 9.198 9.09 8.979 8.864 8.748 8.629 8.509 8.387 8.264 8.14 8.015 7.889 7.763 7.637 7.511 7.385 7.259 7.134 7.009 6.885 6.762 6.639 6.518 6.397 6.278 6.16 6.043 5.927 5.813 5.7 5.589 5.479 5.371 5.264 5.158 5.055 4.952 4.852 4.753 4.655 4.56 4.465 4.373 4.282 4.192 4.105 4.018 3.934 3.851 3.769 3.689 3.61 3.533 3.458 3.384 3.311 3.24 3.17 3.102 3.035 2.969 2.905 2.842 2.78 2.719 2.66 2.602 2.545 2.489 2.435 2.381 2.329 2.278 2.228 2.179 2.131 2.084 2.038 1.993 1.949 1.906 1.864 1.823 1.783 1.743 1.704 1.667 1.63 1.594 1.558 1.524 1.49 1.457 1.424 1.393 1.362 1.331 1.302 1.273 1.245 1.217

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.914" PeakHeight="110.0" Num="3" Error="0.0">
-26.092 7.573 -1.107
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.914" EndFrequency="10.2" PeakHeight="420.49" Num="5" zHalfNm="325.49" Error="6.432">
-246.256 -14.078 14.977 -12.858 5.778
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="58.053" Depth="0.26"/>
<TopsideChapman PeakHeight="420.49" PeakDensity="1290818.9" PeakScaleHeight="69.029" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
