<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-07 -066 20:40:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Multiple candidates for F2o cusp, F2 cusps do not match</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" >
2026.03.07 (066) 20:40:00</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">
FF202606603072040009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.522" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.261" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="0.700" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="495.000" 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="1.744" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="389.341" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="287.643" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.580" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="143.413" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.191" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.228" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="151.330" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="172">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 250.000 250.000 250.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 260.000 262.500 265.000 265.556 266.111 266.667 267.222 267.778 268.333 268.889 269.444 270.000 272.000 274.000 276.000 278.000 280.000 280.000 285.000 285.000 285.000 285.000 290.000 290.000 290.000 290.000 290.000 290.000 292.500 295.000 297.500 300.000 300.000 302.500 305.000 307.500 310.000 307.500 305.000 305.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 320.000 322.500 325.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 335.000 340.000 340.000 340.000 345.000 345.000 345.000 350.000 351.429 352.857 354.286 355.714 357.143 358.571 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 391.667 393.333 395.000 395.000 395.000 400.000 400.000 405.000 405.000 405.000 405.000 405.000 405.000 415.000 415.000 420.000 420.000 425.000 425.000 425.000 425.000 427.500 430.000 430.000 432.500 435.000 435.000 445.000 445.000 445.000 445.000 450.000 450.000 455.000 455.000 455.000 455.000 460.000 470.000 475.000 475.000 480.000 485.000 490.000 490.000 495.000 490.000 492.500 495.000 500.000 505.303 510.973 517.051 523.581 530.617 538.219 546.459 555.421 565.203 575.923 587.724 600.778 615.295 631.536 649.827
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 60 60 60 54 60 0 72 69 69 69 69 66 0 0 0 60 57 0 66 0 0 60 0 69 0 0 0 51 0 0 0 0 66 66 0 0 0 63 63 0 72 72 69 66 0 0 0 69 0 0 0 0 51 0 66 63 72 63 66 66 72 72 69 69 0 63 66 72 69 69 75 78 72 75 75 66 63 66 54 60 66 54 0 0 0 0 66 0 60 66 60 60 63 57 63 66 63 60 57 60 63 57 63 60 48 51 0 0 51 63 63 60 57 57 60 60 57 60 0 54 54 54 60 45 45 57 63 0 60 63 0 66 63 48 0 60 60 57 54 54 54 0 0 0 51 45 48 51 51 51 57 57 48 48 48 48 48 0 0 0 0 51 0 45 42 0 45 42 48 45 42
</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 -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 1.953125 -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 -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 1.171875 1.953125 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 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 2.734375 -0.390625 -0.390625 2.734375 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -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 -1.953125 -1.953125 -1.171875 -0.390625 -0.390625 -0.390625 -2.734375 -1.171875 -0.390625 -0.390625 -1.171875 -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" >
89.841 90.0 95.0 100.0 105.0 110.0 115.0 119.687 120.0 125.0 129.375 130.0 135.0 139.062 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 389.341 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.214 1.167 1.511 1.688 1.744 1.708 1.606 1.606 1.606 1.606 1.615 1.686 1.744 1.768 1.896 2.026 2.161 2.303 2.453 2.613 2.784 2.966 3.162 3.369 3.59 3.821 4.062 4.311 4.565 4.824 5.084 5.345 5.605 5.864 6.12 6.375 6.626 6.875 7.121 7.365 7.605 7.844 8.079 8.312 8.542 8.77 8.994 9.216 9.434 9.649 9.86 10.066 10.266 10.46 10.646 10.822 10.987 11.138 11.273 11.388 11.481 11.549 11.589 11.6 11.6 11.594 11.577 11.552 11.517 11.475 11.424 11.365 11.3 11.228 11.149 11.065 10.975 10.88 10.78 10.677 10.569 10.457 10.343 10.225 10.105 9.982 9.857 9.731 9.602 9.473 9.342 9.21 9.078 8.945 8.812 8.679 8.545 8.412 8.279 8.146 8.014 7.883 7.752 7.622 7.493 7.365 7.238 7.112 6.987 6.863 6.741 6.62 6.501 6.383 6.266 6.151 6.037 5.925 5.814 5.705 5.598 5.492 5.387 5.285 5.183 5.084 4.986 4.889 4.794 4.701 4.609 4.519 4.43 4.343 4.257 4.173 4.09 4.009 3.929 3.851 3.774 3.699 3.624 3.552 3.48 3.41 3.341 3.274 3.208 3.143 3.079 3.017 2.955 2.895 2.836 2.778 2.722 2.666 2.612 2.558 2.506 2.455 2.404 2.355 2.307 2.259 2.213 2.167 2.123 2.079 2.036 1.994 1.953 1.913 1.874 1.835 1.797 1.76 1.724 1.688 1.653 1.619 1.585 1.553 1.521 1.489 1.458

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.744" PeakHeight="110.0" Num="3" Error="0.0">
-28.633 10.541 -2.067
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.744" EndFrequency="11.6" PeakHeight="389.341" Num="5" zHalfNm="287.643" Error="4.206">
-237.587 -20.13 13.559 -8.845 2.724
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="29.062" Depth="0.138"/>
<TopsideChapman PeakHeight="389.341" PeakDensity="1669478.9" PeakScaleHeight="74.228" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
