<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-04 -063 02:20:00.000"
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: 60% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.03.04 (063) 02:20:00</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">
FF202606303040220009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.013" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="36.906" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="265.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="265.000" 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="0.350" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="355.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="341.199" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="290.668" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.202" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="72.597" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="29.265" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="37.947" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="64.210" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.110" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="181">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 265.000 270.000 268.333 266.667 265.000 267.500 270.000 275.000 275.000 275.455 275.909 276.364 276.818 277.273 277.727 278.182 278.636 279.091 279.545 280.000 280.000 280.000 282.500 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.000 285.625 286.250 286.875 287.500 288.125 288.750 289.375 290.000 288.333 286.667 285.000 287.500 290.000 290.000 288.000 286.000 284.000 282.000 280.000 280.000 282.500 285.000 285.000 286.667 288.333 290.000 290.000 290.000 290.000 290.000 290.000 292.500 295.000 293.333 291.667 290.000 300.000 290.000 290.000 290.000 290.000 290.000 291.250 292.500 293.750 295.000 292.500 290.000 290.000 290.000 295.000 295.000 300.000 297.500 295.000 295.000 300.000 300.000 305.000 315.000 305.000 305.000 305.000 310.000 310.000 310.000 310.000 310.000 315.000 312.500 310.000 310.000 320.000 320.000 320.000 320.000 320.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 321.667 323.333 325.000 326.667 328.333 330.000 331.667 333.333 335.000 336.667 338.333 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 335.000 340.000 345.000 345.000 345.000 342.500 340.000 340.000 350.000 347.500 345.000 345.000 350.000 350.000 352.500 355.000 355.000 355.000 355.000 355.000 360.000 362.500 365.000 368.125 371.250 374.375 377.500 380.625 383.750 386.875 390.000 390.000 395.000 410.000 412.500 415.000 425.000 433.750 442.500 451.250 460.000 478.218
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 57 63 0 63 54 0 60 66 63 0 0 63 63 0 0 0 48 0 57 60 0 60 0 60 0 54 54 0 0 0 0 57 63 60 0 54 57 57 57 51 57 57 60 57 66 60 57 60 0 60 54 0 72 66 60 66 69 0 57 60 54 0 60 66 66 54 54 0 0 66 60 78 63 78 75 78 0 60 0 75 0 78 75 75 78 72 81 66 81 75 75 81 75 60 78 72 81 75 0 75 75 81 69 63 69 78 66 69 69 72 69 78 75 72 78 81 69 0 69 0 75 72 0 69 72 69 69 66 0 0 63 57 69 66 0 0 72 69 69 57 66 63 60 57 63 57 54 0 54 51 60 54 0 57 57 57 57 63 57 0 63 66 60 60 0 63 0 0 57 63 57 54 45 57 48 0 0 0 42 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="167">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 146.167 150.0 155.0 160.0 165.0 170.0 175.0 180.0 182.333 185.0 190.0 195.0 200.0 205.0 210.0 215.0 218.5 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 341.199 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.352 0.345 0.333 0.315 0.291 0.258 0.213 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.211 0.233 0.254 0.275 0.297 0.318 0.339 0.354 0.381 0.485 0.619 0.797 1.043 1.393 1.893 2.574 3.412 4.333 5.266 6.171 7.029 7.829 8.568 9.243 9.852 10.394 10.868 11.274 11.61 11.876 12.071 12.195 12.248 12.25 12.238 12.189 12.104 11.987 11.842 11.672 11.48 11.27 11.043 10.803 10.552 10.293 10.027 9.756 9.483 9.208 8.932 8.657 8.385 8.114 7.848 7.585 7.327 7.075 6.827 6.586 6.35 6.121 5.897 5.68 5.47 5.266 5.068 4.876 4.691 4.512 4.339 4.172 4.011 3.855 3.705 3.561 3.421 3.287 3.158 3.034 2.914 2.799 2.688 2.581 2.479 2.38 2.286 2.194 2.107 2.023 1.942 1.864 1.79 1.718 1.649 1.583 1.52 1.459 1.4 1.344 1.29 1.238 1.188 1.141 1.095 1.051 1.008 0.968 0.929 0.891 0.856 0.821 0.788 0.756 0.726 0.697 0.668 0.642 0.616 0.591 0.567 0.544 0.522 0.501 0.481 0.462 0.443 0.425 0.408 0.392 0.376 0.361 0.346 0.332 0.319 0.306 0.294 0.282 0.27 0.259 0.249 0.239 0.229 0.22 0.211 0.203

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="12.25" PeakHeight="341.199" Num="5" zHalfNm="290.668" Error="1.753">
-138.073 25.117 -10.852 0.692 0.417
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="108.5" Depth="0.154"/>
<TopsideChapman PeakHeight="341.199" PeakDensity="1861817.6" PeakScaleHeight="37.947" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
