<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 14:40:00.000"
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) 14:40:00</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">
FF202606203031440009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.371" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.384" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="530.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="3.397" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.363" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="407.078" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.412" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.028" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="184.832" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="71.997" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="101.208" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="218.430" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.530" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="130">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 260.000 270.000 275.000 280.000 285.000 287.500 290.000 295.000 300.000 305.000 307.500 310.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 321.250 322.500 323.750 325.000 330.000 330.000 330.000 330.000 333.000 336.000 339.000 342.000 345.000 345.000 345.000 350.000 350.000 350.000 353.333 356.667 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 400.000 400.000 400.000 405.000 410.000 410.000 410.000 415.000 420.000 420.000 425.000 425.000 425.000 430.000 435.000 435.000 440.000 440.000 445.000 450.000 450.000 452.500 455.000 460.000 460.000 465.000 465.000 470.000 475.000 475.000 475.000 480.000 485.000 485.000 490.000 490.000 490.000 495.000 497.500 500.000 505.000 505.000 505.000 510.000 515.000 520.000 520.000 525.000 530.000 530.000 530.000 530.000 538.000 546.000 554.000 562.000 570.000 575.000 581.667 588.333 595.000 603.720 613.136 623.334 634.417 646.504 659.740 674.295 690.377 708.240 728.197 750.639
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 45 48 0 54 51 0 51 0 0 48 0 48 45 0 51 57 57 54 57 0 0 0 57 57 0 57 48 0 0 0 0 57 60 60 60 60 57 0 0 57 60 60 57 60 60 60 60 57 60 54 45 51 60 51 57 60 60 51 57 63 57 48 57 63 57 48 57 48 57 60 60 54 60 54 60 57 48 57 51 57 54 60 54 57 54 45 54 57 54 48 54 45 51 54 51 0 51 45 51 51 48 48 45 48 48 48 45 0 0 0 45 0 42 45 42 0 0 42 42 42 0 42 42 0 0 0 0 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 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 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 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 -1.171875 -0.390625 2.734375 0.390625 0.390625 1.953125 1.171875 0.390625 -0.390625 -1.953125 0.390625 0.390625 0.390625 -2.734375 0.390625 -1.953125 0.390625 -1.953125 -1.953125 2.734375
</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" >
89.482 90.0 95.0 100.0 105.0 110.0 111.522 113.043 114.565 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 407.078 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.285 2.94 3.286 3.397 3.274 3.274 3.397 3.409 3.549 3.685 3.82 3.956 4.093 4.231 4.372 4.515 4.661 4.809 4.961 5.115 5.272 5.432 5.594 5.757 5.923 6.089 6.257 6.425 6.593 6.762 6.93 7.098 7.266 7.432 7.598 7.763 7.927 8.089 8.25 8.411 8.569 8.727 8.883 9.038 9.191 9.343 9.493 9.642 9.789 9.935 10.078 10.218 10.357 10.492 10.624 10.751 10.874 10.991 11.101 11.203 11.296 11.376 11.444 11.496 11.531 11.548 11.55 11.549 11.543 11.532 11.516 11.495 11.469 11.439 11.404 11.365 11.323 11.276 11.226 11.172 11.115 11.054 10.991 10.925 10.856 10.784 10.71 10.634 10.556 10.476 10.394 10.31 10.224 10.137 10.049 9.96 9.869 9.777 9.684 9.591 9.497 9.402 9.306 9.21 9.114 9.017 8.92 8.823 8.725 8.628 8.53 8.433 8.336 8.239 8.142 8.045 7.949 7.853 7.757 7.662 7.567 7.473 7.379 7.286 7.194 7.102 7.01 6.919 6.829 6.74 6.651 6.564 6.476 6.39 6.304 6.22 6.135 6.052 5.97 5.888 5.807 5.727 5.648 5.57 5.492 5.416 5.34 5.265 5.191 5.117 5.045 4.974 4.903 4.833 4.764 4.696 4.628 4.562 4.496 4.431 4.367 4.304 4.241 4.18 4.119 4.059 3.999 3.941 3.883 3.826 3.77 3.715 3.66 3.606 3.553 3.5 3.448 3.397 3.347 3.297 3.248 3.2 3.152 3.105 3.059 3.013

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.397" PeakHeight="110.0" Num="3" Error="0.0">
-30.505 13.158 -3.171
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.397" EndFrequency="11.55" PeakHeight="407.078" Num="5" zHalfNm="267.412" Error="4.722">
-262.767 -42.717 17.733 -6.852 2.09
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.565" Depth="0.123"/>
<TopsideChapman PeakHeight="407.078" PeakDensity="1655117.9" PeakScaleHeight="101.208" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
