<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 10:00:00.000"
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="1 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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) 10:00:00</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">
FF202606203031000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="8.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.953" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.359" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="1.550" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="2.160" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="103.268" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="103.308" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="13.123" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="375.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.093" 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="313.900" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.631" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.079" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="121.956" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="24.232" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="67.569" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="112.940" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.720" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="109">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.85 2.9 2.95 3.0 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 245.000 243.750 242.500 241.250 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 245.000 250.000 250.000 247.500 245.000 245.000 250.000 250.000 250.000 255.000 255.000 255.000 255.000 260.000 260.000 260.000 261.667 263.333 265.000 265.000 265.000 266.500 268.000 269.500 271.000 272.500 274.000 275.500 277.000 278.500 280.000 280.000 280.000 280.000 280.000 285.000 287.500 290.000 291.250 292.500 293.750 295.000 290.000 295.000 296.250 297.500 298.750 300.000 305.000 306.667 308.333 310.000 310.000 310.000 310.000 310.000 315.000 317.500 320.000 320.000 320.000 325.000 325.000 325.000 330.000 330.000 330.000 335.000 335.000 340.000 345.000 345.000 350.000 350.000 355.000 360.000 360.000 360.000 365.000 370.000 375.000 375.000 378.896 383.328 388.417 394.320 401.249 409.496 419.478 431.807 447.421 467.833 495.657 535.827 598.902
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 54 0 0 0 63 0 63 0 66 69 66 63 63 0 60 0 63 54 60 63 60 63 0 63 72 66 0 69 0 0 0 63 69 0 0 0 0 0 0 0 0 0 63 66 69 0 72 69 51 57 0 0 51 54 0 0 0 0 0 66 57 0 0 48 0 63 69 69 66 54 63 69 72 66 72 72 69 72 75 78 69 69 63 69 63 72 72 63 66 57 66 66 66 69 69 72 72 72 69 69 69 69 69 63 54 0 51
</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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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 -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 1.171875 1.171875 1.171875 1.171875 1.171875
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2.0 2.05 2.1 2.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
103.268 103.962 104.709 105.517 106.393 107.350 108.402 109.568 110.876 112.365 114.095 116.167 118.767
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 0 0 0 0 0 0 0 0 51 0 60
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 2.734375 -0.390625 0.390625 1.171875 1.953125 -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" >
90.0 95.0 100.0 103.308 105.0 110.0 111.008 115.0 118.709 120.0 125.0 126.409 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 313.9 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 1.678 2.089 2.16 2.154 2.059 2.025 2.025 2.025 2.048 2.135 2.16 2.238 2.351 2.469 2.593 2.722 2.857 2.998 3.146 3.301 3.465 3.637 3.818 4.01 4.213 4.429 4.657 4.899 5.152 5.417 5.689 5.964 6.236 6.499 6.748 6.978 7.187 7.376 7.542 7.689 7.816 7.925 8.016 8.092 8.152 8.197 8.228 8.246 8.25 8.25 8.244 8.229 8.207 8.177 8.14 8.096 8.046 7.991 7.929 7.863 7.793 7.718 7.639 7.556 7.47 7.382 7.29 7.197 7.101 7.003 6.904 6.804 6.702 6.6 6.497 6.393 6.289 6.185 6.08 5.976 5.872 5.769 5.666 5.563 5.461 5.36 5.26 5.16 5.062 4.965 4.868 4.773 4.679 4.586 4.494 4.404 4.314 4.227 4.14 4.055 3.971 3.888 3.807 3.727 3.649 3.572 3.496 3.421 3.348 3.277 3.206 3.137 3.069 3.003 2.937 2.873 2.811 2.749 2.689 2.63 2.572 2.515 2.46 2.406 2.352 2.3 2.249 2.199 2.15 2.102 2.055 2.009 1.964 1.92 1.877 1.835 1.794 1.754 1.714 1.676 1.638 1.601 1.565 1.53 1.495 1.461 1.428 1.396 1.364 1.334 1.303 1.274 1.245 1.217 1.189 1.162 1.136 1.11 1.085 1.06 1.036 1.012 0.989 0.967 0.945 0.923 0.902 0.882 0.862 0.842 0.823 0.804 0.786 0.768 0.751 0.733 0.717 0.7 0.684 0.669 0.654 0.639 0.624 0.61 0.596 0.582 0.569

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.16" PeakHeight="103.308" Num="3" Error="3.902">
-19.224 7.5 -1.584
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.16" EndFrequency="8.25" PeakHeight="313.9" Num="5" zHalfNm="227.631" Error="4.057">
-180.528 2.516 -13.386 4.647 -0.74
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="23.101" Depth="0.135"/>
<TopsideChapman PeakHeight="313.9" PeakDensity="844447.9" PeakScaleHeight="67.569" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
