<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 13:10:00.000"
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: 100%</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) 13:10:00</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">
FF202606903101310009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.633" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="31.205" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" 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="3.259" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.299" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="348.602" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.515" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.348" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="123.004" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="51.916" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="67.903" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="154.100" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.330" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="149">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 215.000 220.000 225.000 235.000 230.000 236.667 243.333 250.000 255.000 262.500 270.000 271.471 272.941 274.412 275.882 277.353 278.824 280.294 281.765 283.235 284.706 286.176 287.647 289.118 290.588 292.059 293.529 295.000 300.000 300.000 300.000 301.000 302.000 303.000 304.000 305.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 327.500 330.000 330.000 330.000 330.000 330.000 330.000 332.500 335.000 337.500 340.000 342.500 345.000 345.000 346.250 347.500 348.750 350.000 350.000 355.000 355.000 360.000 360.000 360.000 360.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 382.500 385.000 390.000 390.000 390.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 415.000 425.000 425.000 425.000 425.000 430.000 430.000 435.000 437.500 440.000 440.000 440.000 440.000 440.000 445.000 450.000 450.000 455.000 455.000 460.000 465.000 465.000 470.000 470.000 475.000 480.000 480.000 485.000 489.356 494.264 499.836 506.218 513.599 522.234 532.472 544.805 559.950 578.992
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 51 54 51 48 57 0 0 54 51 0 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 0 48 54 51 48 0 48 0 0 48 51 0 57 54 57 0 60 57 57 57 57 57 57 60 63 63 60 0 60 60 57 60 60 51 0 66 0 0 0 57 66 48 0 0 57 57 57 60 51 0 63 63 57 60 45 54 63 66 66 63 66 54 60 63 60 66 57 63 66 63 63 66 60 63 54 60 60 63 60 63 57 60 48 54 60 48 51 0 57 51 54 48 0 45 48 0 0 48 0 51 48 48 51 51 45 51 48 51 51 48 51 51 51 48 48 0 0 45 48 45 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 2.734375 -0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 2.734375 0.390625 1.171875 0.390625 -0.390625 -1.953125 -2.734375 -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 -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 -2.734375 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 -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
</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" >
89.504 90.0 95.0 100.0 105.0 110.0 112.091 114.183 115.0 116.274 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 348.602 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.192 2.821 3.153 3.259 3.137 3.137 3.185 3.259 3.372 3.52 3.666 3.811 3.957 4.106 4.257 4.411 4.569 4.732 4.899 5.071 5.247 5.429 5.615 5.806 6.002 6.201 6.405 6.613 6.823 7.037 7.253 7.471 7.69 7.911 8.133 8.356 8.58 8.803 9.027 9.251 9.474 9.697 9.919 10.139 10.357 10.572 10.783 10.987 11.183 11.366 11.531 11.67 11.775 11.837 11.85 11.85 11.84 11.819 11.786 11.743 11.69 11.627 11.555 11.476 11.388 11.294 11.193 11.085 10.972 10.855 10.732 10.605 10.475 10.341 10.204 10.065 9.923 9.78 9.635 9.488 9.341 9.193 9.044 8.895 8.746 8.597 8.449 8.301 8.153 8.007 7.861 7.716 7.573 7.431 7.29 7.15 7.012 6.876 6.741 6.608 6.477 6.347 6.219 6.093 5.969 5.847 5.727 5.608 5.492 5.377 5.265 5.154 5.045 4.938 4.834 4.731 4.629 4.53 4.433 4.337 4.244 4.152 4.062 3.973 3.887 3.802 3.719 3.637 3.557 3.479 3.402 3.327 3.254 3.182 3.111 3.042 2.975 2.909 2.844 2.781 2.719 2.658 2.599 2.54 2.484 2.428 2.374 2.32 2.268 2.217 2.168 2.119 2.071 2.025 1.979 1.935 1.891 1.848 1.807 1.766 1.726 1.687 1.649 1.612 1.575 1.54 1.505 1.471 1.438 1.405 1.373 1.342 1.312 1.282 1.253 1.225 1.197 1.17 1.143 1.117 1.092 1.067 1.043 1.019 0.996 0.974

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.259" PeakHeight="110.0" Num="3" Error="0.0">
-30.403 13.008 -3.101
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.259" EndFrequency="11.85" PeakHeight="348.602" Num="5" zHalfNm="255.515" Error="3.655">
-191.364 -51.477 12.97 -4.161 1.704
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.274" Depth="0.122"/>
<TopsideChapman PeakHeight="348.602" PeakDensity="1742214.6" PeakScaleHeight="67.903" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
