<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 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 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" >
2026.03.08 (067) 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">
FF202606703082120009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.324" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.871" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" 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="10.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="580.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.901" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="435.587" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="337.094" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.274" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="142.473" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.446" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.243" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="145.020" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.840" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="156">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 300.000 301.667 303.333 305.000 300.000 300.000 300.000 300.000 300.000 300.000 305.000 307.500 310.000 310.000 310.000 310.000 310.000 311.000 312.000 313.000 314.000 315.000 316.667 318.333 320.000 321.667 323.333 325.000 325.000 326.250 327.500 328.750 330.000 331.250 332.500 333.750 335.000 337.500 340.000 340.000 340.000 341.250 342.500 343.750 345.000 345.000 345.000 345.000 346.667 348.333 350.000 350.000 355.000 356.250 357.500 358.750 360.000 365.000 366.111 367.222 368.333 369.444 370.556 371.667 372.778 373.889 375.000 375.000 380.000 381.667 383.333 385.000 385.000 390.000 390.000 395.000 395.000 400.000 400.000 400.000 405.000 405.000 405.000 410.000 410.000 410.000 415.000 417.500 420.000 422.500 425.000 425.000 427.500 430.000 430.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 457.500 460.000 465.000 465.000 470.000 470.000 475.000 480.000 480.000 480.000 485.000 490.000 490.000 495.000 500.000 500.000 505.000 505.000 510.000 515.000 515.000 520.000 520.000 525.000 530.000 535.000 535.000 540.000 545.000 550.000 552.500 555.000 560.000 565.000 570.000 575.000 575.000 580.000 580.000 585.000 590.000 595.000 600.000 605.000 610.000 630.000 638.336 647.377 657.217 667.967
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 0 0 0 63 63 63 66 57 54 66 0 63 63 0 63 60 0 0 0 0 60 0 0 0 0 0 63 66 0 0 0 0 0 0 0 66 0 54 60 63 0 0 0 63 0 69 69 0 0 66 66 63 0 0 0 66 51 0 0 54 0 0 0 57 0 66 69 69 0 0 69 72 66 72 63 69 60 66 69 60 66 69 63 66 69 63 0 63 0 63 69 63 69 69 66 69 63 69 63 66 60 69 63 66 60 69 60 66 63 69 66 54 66 69 69 60 66 63 51 63 57 63 60 54 63 60 63 63 60 57 60 0 0 60 0 60 63 63 60 57 54 51 45 0 0 0 0 0 0 42 0 45 45 45
</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 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -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 -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 -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 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 1.953125 1.171875 -1.953125 -1.953125 -2.734375
</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" >
90.392 95.0 100.0 105.0 110.0 115.0 120.0 125.0 129.871 130.0 135.0 140.0 145.0 149.741 150.0 155.0 160.0 165.0 169.612 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 435.587 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.6 0.781 0.872 0.901 0.886 0.84 0.758 0.629 0.629 0.629 0.629 0.629 0.629 0.633 0.701 0.769 0.838 0.901 0.913 1.029 1.128 1.223 1.32 1.421 1.529 1.646 1.774 1.916 2.074 2.251 2.449 2.667 2.904 3.157 3.42 3.688 3.956 4.222 4.483 4.739 4.99 5.236 5.476 5.712 5.944 6.172 6.396 6.617 6.836 7.052 7.266 7.478 7.688 7.896 8.102 8.307 8.509 8.71 8.908 9.103 9.295 9.483 9.666 9.843 10.011 10.169 10.313 10.44 10.546 10.627 10.679 10.7 10.7 10.696 10.682 10.659 10.627 10.586 10.538 10.481 10.418 10.348 10.272 10.189 10.102 10.01 9.913 9.811 9.706 9.598 9.486 9.372 9.255 9.136 9.015 8.892 8.768 8.642 8.516 8.389 8.261 8.133 8.005 7.877 7.749 7.621 7.493 7.366 7.24 7.115 6.99 6.866 6.744 6.622 6.502 6.382 6.264 6.148 6.032 5.918 5.806 5.695 5.585 5.477 5.371 5.266 5.163 5.061 4.961 4.862 4.765 4.669 4.576 4.483 4.393 4.303 4.216 4.13 4.045 3.962 3.881 3.801 3.722 3.645 3.569 3.495 3.422 3.351 3.281 3.212 3.145 3.079 3.014 2.95 2.888 2.827 2.767 2.709 2.651 2.595 2.54 2.486 2.433 2.381 2.331 2.281 2.232 2.185 2.138 2.092 2.048 2.004 1.961 1.919 1.878 1.837 1.798 1.759 1.722 1.685 1.648 1.613 1.578 1.544 1.511 1.478

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.901" PeakHeight="110.0" Num="3" Error="0.0">
-26.022 7.502 -1.088
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.901" EndFrequency="10.7" PeakHeight="435.587" Num="5" zHalfNm="337.094" Error="6.516">
-258.94 -17.435 19.049 -15.685 7.036
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="59.612" Depth="0.272"/>
<TopsideChapman PeakHeight="435.587" PeakDensity="1420471.5" PeakScaleHeight="71.243" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
