<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 19:00:00.000"
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: 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" >
2026.03.03 (062) 19:00:00</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">
FF202606203031900009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.462" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.393" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.775" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="394.528" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="293.356" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.610" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="138.353" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="65.719" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.291" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.350" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="180">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7 12.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 230.000 232.000 234.000 236.000 238.000 240.000 245.000 245.000 250.000 250.000 250.000 260.000 260.000 265.000 267.500 270.000 270.000 272.500 275.000 275.000 277.500 280.000 280.000 280.000 280.000 285.000 286.667 288.333 290.000 291.667 293.333 295.000 300.000 300.000 300.000 305.000 306.667 308.333 310.000 310.000 310.000 310.000 313.333 316.667 320.000 320.000 323.333 326.667 330.000 330.000 332.500 335.000 335.000 335.000 335.000 335.000 340.000 342.500 345.000 345.000 345.000 347.500 350.000 350.000 350.000 355.000 355.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 372.500 375.000 375.000 375.000 377.500 380.000 380.000 382.500 385.000 390.000 390.000 392.500 395.000 395.000 397.500 400.000 400.000 405.000 405.000 407.500 410.000 410.000 410.000 415.000 420.000 420.000 420.000 420.000 421.667 423.333 425.000 425.000 425.000 430.000 430.000 430.000 430.000 430.000 435.000 435.000 435.000 440.000 440.000 440.000 440.000 440.000 440.000 440.000 445.000 445.000 445.000 445.000 445.000 450.000 455.000 455.000 455.000 455.000 455.000 460.000 462.500 465.000 465.000 468.333 471.667 475.000 475.000 476.250 477.500 478.750 480.000 480.000 485.000 490.000 490.000 490.000 490.000 495.000 500.000 505.000 505.000 510.000 512.500 515.000 517.500 520.000 525.000 530.000 535.000 538.654 542.689 547.165 552.160 557.771 564.117 571.355 579.685 589.375 600.789 614.430 631.022 651.638
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 48 48 0 0 0 0 54 57 54 54 48 0 48 54 48 0 45 54 0 54 57 48 54 60 60 57 63 0 0 48 0 0 66 60 66 66 63 0 0 0 66 60 60 0 0 60 63 0 0 48 57 0 51 57 63 0 63 60 0 54 0 63 54 60 63 66 57 63 48 0 60 63 57 60 66 57 63 48 60 63 66 60 66 66 63 69 60 63 0 63 63 54 63 63 60 66 54 63 66 66 63 51 60 66 66 0 0 69 69 63 66 69 66 63 60 66 63 63 60 0 60 63 60 57 54 60 60 60 0 48 57 51 0 57 60 57 57 0 54 57 0 0 42 48 0 0 0 57 57 57 45 51 54 54 0 54 48 54 54 0 54 0 51 51 54 54 54 54 42 54 51 51 51 0 45 45 0 45 42
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</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" >
89.586 90.0 95.0 100.0 105.0 110.0 114.246 115.0 118.493 120.0 122.739 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 394.528 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.865 2.402 2.685 2.775 2.653 2.653 2.653 2.696 2.775 2.829 2.954 3.084 3.219 3.359 3.504 3.655 3.81 3.969 4.133 4.301 4.473 4.648 4.827 5.008 5.193 5.38 5.57 5.762 5.956 6.152 6.351 6.551 6.753 6.957 7.163 7.37 7.579 7.79 8.003 8.217 8.432 8.649 8.868 9.088 9.31 9.532 9.756 9.98 10.205 10.431 10.656 10.88 11.102 11.322 11.537 11.745 11.945 12.133 12.306 12.457 12.582 12.676 12.733 12.75 12.75 12.743 12.726 12.698 12.661 12.614 12.559 12.495 12.423 12.344 12.258 12.166 12.068 11.964 11.855 11.741 11.623 11.501 11.375 11.246 11.114 10.979 10.842 10.703 10.562 10.42 10.277 10.132 9.987 9.841 9.695 9.548 9.402 9.255 9.109 8.964 8.818 8.674 8.53 8.387 8.246 8.105 7.965 7.827 7.69 7.554 7.42 7.287 7.155 7.026 6.897 6.771 6.646 6.523 6.401 6.281 6.163 6.046 5.931 5.818 5.707 5.597 5.49 5.383 5.279 5.176 5.075 4.976 4.879 4.783 4.688 4.596 4.505 4.415 4.328 4.241 4.157 4.074 3.992 3.912 3.833 3.756 3.681 3.606 3.534 3.462 3.392 3.323 3.256 3.19 3.125 3.061 2.999 2.938 2.878 2.819 2.761 2.705 2.649 2.595 2.542 2.49 2.439 2.389 2.339 2.291 2.244 2.198 2.153 2.108 2.065 2.022 1.981 1.94 1.9 1.861 1.822 1.785 1.748 1.712 1.676 1.641

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.775" PeakHeight="110.0" Num="3" Error="0.0">
-29.994 12.411 -2.831
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.775" EndFrequency="12.75" PeakHeight="394.528" Num="5" zHalfNm="293.356" Error="3.053">
-230.151 -54.731 17.355 -4.673 0.411
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.739" Depth="0.122"/>
<TopsideChapman PeakHeight="394.528" PeakDensity="2016904.5" PeakScaleHeight="74.291" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
