<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 13:30:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.03.10 (069) 13:30:00</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">
FF202606903101330009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.835" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.750" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.250" 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="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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="460.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.307" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.322" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="318.705" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="246.196" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.465" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="90.706" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.215" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="51.393" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="133.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="137">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 11.0 11.05 11.1 11.15 11.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.000 215.000 220.000 225.000 230.000 235.000 240.000 240.000 245.000 250.000 255.000 260.000 265.000 265.000 265.000 270.000 270.000 273.500 277.000 280.500 284.000 287.500 291.000 294.500 298.000 301.500 305.000 305.000 305.000 306.250 307.500 308.750 310.000 310.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 322.500 325.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 375.000 377.500 380.000 380.000 380.000 382.500 385.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 395.000 395.000 400.000 402.500 405.000 405.000 405.000 410.000 410.000 410.000 415.000 415.000 415.000 415.000 420.000 420.000 420.000 425.000 430.000 430.000 435.000 435.000 435.000 437.500 440.000 440.000 440.000 440.000 445.000 445.000 450.000 455.000 455.000 460.000 460.000 460.000 460.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 0 45 0 0 0 48 54 0 0 0 0 45 48 48 48 51 0 0 0 0 0 0 0 0 0 0 54 54 0 54 0 51 54 51 57 54 54 51 48 0 60 45 0 66 60 60 63 63 69 72 72 66 69 72 72 66 69 66 63 69 63 69 69 69 66 66 60 57 63 66 63 48 66 63 69 69 63 60 57 54 60 54 60 66 57 0 51 54 66 54 63 63 63 60 63 51 60 60 51 60 63 0 54 60 60 54 0 54 54 57 57 51 57 0 54 0 45 51 42 45 51 0 45 48 51 48 51 45 0 45 48 45 48 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 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 2.734375 -0.390625 0.390625 2.734375 0.390625 -0.390625 0.390625 -0.390625 -1.953125 -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 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 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 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 0.390625 -0.390625 0.390625 -0.390625 1.171875 -0.390625 -2.734375 -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" >
89.496 90.0 95.0 100.0 105.0 110.0 111.894 113.787 115.0 115.681 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 318.705 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.225 2.862 3.199 3.307 3.184 3.184 3.263 3.307 3.438 3.583 3.725 3.866 4.008 4.152 4.298 4.448 4.601 4.759 4.921 5.088 5.26 5.437 5.618 5.805 5.996 6.191 6.39 6.593 6.799 7.008 7.219 7.433 7.649 7.867 8.087 8.309 8.533 8.76 8.988 9.22 9.455 9.694 9.937 10.185 10.438 10.693 10.94 11.141 11.2 11.199 11.184 11.15 11.097 11.029 10.945 10.847 10.736 10.614 10.482 10.34 10.191 10.034 9.87 9.702 9.529 9.352 9.172 8.989 8.805 8.62 8.434 8.248 8.062 7.877 7.693 7.51 7.329 7.15 6.972 6.797 6.625 6.455 6.288 6.123 5.962 5.803 5.648 5.495 5.346 5.2 5.057 4.918 4.781 4.648 4.518 4.391 4.267 4.146 4.028 3.913 3.801 3.692 3.586 3.483 3.382 3.284 3.189 3.096 3.006 2.918 2.833 2.75 2.67 2.591 2.515 2.441 2.369 2.3 2.232 2.166 2.102 2.04 1.979 1.921 1.864 1.809 1.755 1.703 1.652 1.603 1.556 1.509 1.464 1.421 1.378 1.337 1.298 1.259 1.221 1.185 1.15 1.115 1.082 1.05 1.018 0.988 0.958 0.93 0.902 0.875 0.849 0.824 0.799 0.775 0.752 0.729 0.708 0.686 0.666 0.646 0.627 0.608 0.59 0.572 0.555 0.538 0.522 0.507 0.492 0.477 0.463 0.449 0.435 0.422 0.41 0.397 0.385 0.374 0.363 0.352 0.341 0.331 0.321 0.312 0.302 0.293

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.307" PeakHeight="110.0" Num="3" Error="0.0">
-30.44 13.062 -3.126
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.307" EndFrequency="11.2" PeakHeight="318.705" Num="5" zHalfNm="246.196" Error="5.556">
-148.696 -68.796 17.935 -5.508 2.041
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.681" Depth="0.123"/>
<TopsideChapman PeakHeight="318.705" PeakDensity="1556327.5" PeakScaleHeight="51.393" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
