<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 19:50:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.03.14 (073) 19:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607303141950009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.152" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.058" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="675.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.364" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="430.804" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="281.363" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.699" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="197.362" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.836" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="100.613" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="245.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="143">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 230.000 232.500 235.000 235.000 235.000 235.000 235.000 235.000 237.500 240.000 245.000 247.500 250.000 250.000 245.000 246.667 248.333 250.000 255.000 255.000 255.000 260.000 261.000 262.000 263.000 264.000 265.000 270.000 275.000 277.500 280.000 280.000 280.000 280.000 282.500 285.000 285.000 290.000 295.000 295.000 300.000 300.000 300.000 302.500 305.000 305.000 310.000 315.000 315.000 315.000 320.000 325.000 330.000 330.000 335.000 335.000 335.000 345.000 345.000 350.000 350.000 355.000 360.000 360.000 360.000 365.000 370.000 375.000 375.000 385.000 385.000 390.000 390.000 400.000 400.000 405.000 410.000 415.000 420.000 425.000 430.000 435.000 440.000 445.000 450.000 455.000 460.000 465.000 470.000 475.000 480.000 485.000 490.000 495.000 500.000 505.000 510.000 515.000 520.000 525.000 530.000 530.000 535.000 540.000 540.000 545.000 545.000 547.500 550.000 555.000 565.000 570.000 570.000 570.000 580.000 585.000 585.000 590.000 595.000 600.000 605.000 610.000 615.000 620.000 625.000 630.000 635.000 640.714 646.429 652.143 657.857 663.571 669.286 675.000 675.000 690.000 690.000 700.000 708.722 718.377 729.124
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 57 0 54 60 60 0 57 54 0 60 57 0 0 0 57 0 0 51 63 0 60 66 0 0 51 0 60 0 57 0 54 60 63 66 0 66 63 63 54 63 54 63 66 0 69 66 69 63 69 66 69 66 60 69 66 69 63 57 66 63 66 66 63 69 66 66 69 69 66 63 69 69 69 66 66 69 69 69 69 69 69 66 63 66 63 66 66 66 66 66 66 66 66 69 66 66 66 66 63 60 57 63 60 57 66 63 63 0 54 63 60 51 0 60 60 57 63 63 63 63 60 57 57 57 57 60 60 0 0 0 0 51 0 54 51 45 48 48 45 45 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 -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 -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 -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 2.734375 -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" >
89.669 90.0 95.0 100.0 105.0 110.0 115.0 116.273 120.0 122.547 125.0 128.82 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 430.804 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.228 1.586 2.047 2.288 2.364 2.284 2.238 2.238 2.238 2.287 2.364 2.394 2.516 2.638 2.763 2.895 3.036 3.187 3.353 3.534 3.731 3.942 4.163 4.387 4.608 4.821 5.025 5.218 5.401 5.575 5.741 5.898 6.05 6.195 6.335 6.471 6.603 6.731 6.857 6.979 7.099 7.216 7.332 7.445 7.558 7.668 7.778 7.887 7.994 8.101 8.207 8.313 8.418 8.522 8.627 8.731 8.836 8.94 9.045 9.15 9.255 9.361 9.467 9.573 9.678 9.784 9.887 9.988 10.082 10.163 10.223 10.249 10.25 10.248 10.242 10.231 10.215 10.195 10.171 10.143 10.111 10.075 10.036 9.993 9.947 9.898 9.846 9.791 9.734 9.674 9.611 9.547 9.48 9.411 9.341 9.268 9.195 9.119 9.042 8.964 8.885 8.804 8.723 8.641 8.558 8.474 8.389 8.304 8.219 8.133 8.047 7.96 7.874 7.787 7.7 7.613 7.526 7.439 7.352 7.266 7.179 7.093 7.007 6.922 6.837 6.752 6.668 6.584 6.5 6.417 6.335 6.253 6.172 6.091 6.012 5.932 5.853 5.775 5.698 5.621 5.545 5.47 5.395 5.322 5.248 5.176 5.104 5.034 4.963 4.894 4.825 4.757 4.69 4.624 4.558 4.494 4.429 4.366 4.304 4.242 4.181 4.12 4.061 4.002 3.944 3.887 3.83 3.774 3.719 3.664 3.611 3.558 3.505 3.454 3.403 3.352 3.303 3.254 3.206 3.158 3.111 3.065 3.019 2.974 2.93 2.886 2.843

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.364" PeakHeight="110.0" Num="3" Error="0.0">
-29.558 11.791 -2.564
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.364" EndFrequency="10.25" PeakHeight="430.804" Num="5" zHalfNm="281.363" Error="6.802">
-278.128 -53.814 52.394 -30.013 7.577
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.82" Depth="0.126"/>
<TopsideChapman PeakHeight="430.804" PeakDensity="1303505.0" PeakScaleHeight="100.613" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
