<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-04 -063 22:00:00.000"
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="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: 80% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o 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" >
2026.03.04 (063) 22:00:00</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">
FF202606303042200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.381" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.214" 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="10.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="385.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="385.000" 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="9.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.372" 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="469.727" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="396.096" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.810" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="109.469" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="28.170" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="55.234" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="116.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.570" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="131">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
385.000 386.667 388.333 390.000 390.000 390.000 390.000 391.667 393.333 395.000 390.000 391.250 392.500 393.750 395.000 396.250 397.500 398.750 400.000 401.250 402.500 403.750 405.000 406.250 407.500 408.750 410.000 411.250 412.500 413.750 415.000 416.250 417.500 418.750 420.000 420.000 420.000 415.000 417.500 420.000 422.500 425.000 420.000 421.667 423.333 425.000 426.667 428.333 430.000 431.667 433.333 435.000 435.000 435.000 440.000 440.000 440.000 442.500 445.000 445.000 447.000 449.000 451.000 453.000 455.000 455.000 455.000 456.667 458.333 460.000 461.667 463.333 465.000 465.000 466.250 467.500 468.750 470.000 470.000 475.000 475.833 476.667 477.500 478.333 479.167 480.000 480.000 490.000 490.000 490.000 490.000 495.000 495.000 495.000 495.000 500.000 502.500 505.000 507.500 510.000 510.000 512.500 515.000 515.000 515.000 515.000 517.500 520.000 522.500 525.000 527.500 530.000 535.000 536.667 538.333 540.000 540.000 547.500 555.000 560.000 560.000 565.000 570.494 576.550 583.259 590.732 599.109 608.564 619.318 631.661 645.970
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 51 54 0 63 0 0 51 63 0 0 57 0 0 0 0 0 48 0 0 63 0 0 0 0 63 0 0 60 0 0 0 57 0 63 0 0 0 0 72 0 0 81 0 0 0 81 0 0 75 72 72 69 0 72 0 69 69 0 0 0 0 60 0 69 0 0 63 0 0 63 66 0 0 0 69 69 63 0 0 57 0 0 66 66 54 60 66 66 63 66 66 66 66 0 0 0 60 66 0 60 63 0 63 0 60 0 60 0 0 57 0 0 0 0 0 54 51 54 51 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -1.953125 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -2.734375 -2.734375 1.953125 -0.390625 0.390625 1.171875 -1.171875 1.953125 1.953125 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.136 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.742 140.0 145.0 150.0 155.0 160.0 165.0 169.485 170.0 175.0 180.0 185.0 190.0 195.0 199.227 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 469.727 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.246 0.322 0.36 0.372 0.368 0.357 0.337 0.306 0.262 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.203 0.232 0.261 0.29 0.319 0.348 0.372 0.381 0.44 0.505 0.575 0.65 0.73 0.815 0.906 1.002 1.104 1.211 1.323 1.442 1.565 1.695 1.83 1.971 2.117 2.27 2.428 2.592 2.762 2.939 3.121 3.309 3.504 3.705 3.912 4.125 4.344 4.569 4.801 5.038 5.28 5.528 5.782 6.04 6.302 6.567 6.835 7.105 7.375 7.644 7.91 8.171 8.424 8.666 8.893 9.103 9.29 9.45 9.58 9.675 9.732 9.75 9.75 9.741 9.718 9.681 9.632 9.57 9.497 9.414 9.322 9.222 9.113 8.998 8.877 8.75 8.619 8.483 8.344 8.201 8.057 7.91 7.762 7.612 7.462 7.311 7.161 7.01 6.86 6.711 6.563 6.416 6.27 6.126 5.983 5.842 5.704 5.567 5.432 5.299 5.169 5.041 4.915 4.792 4.671 4.552 4.436 4.322 4.21 4.101 3.994 3.89 3.788 3.688 3.591 3.496 3.403 3.312 3.224 3.138 3.053 2.971 2.891 2.813 2.737 2.663 2.591 2.52 2.452 2.385 2.32 2.256 2.195 2.135 2.076 2.019 1.964 1.91 1.857 1.806 1.756 1.708 1.661 1.615 1.57 1.527 1.485 1.444 1.404 1.365 1.327 1.29 1.254 1.22 1.186 1.153 1.121 1.09 1.06 1.03 1.001 0.974 0.947 0.92 0.895 0.87 0.846 0.822 0.799

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.372" PeakHeight="110.0" Num="3" Error="0.0">
-19.399 2.706 -0.171
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.372" EndFrequency="9.75" PeakHeight="469.727" Num="5" zHalfNm="396.096" Error="1.997">
-253.607 -31.878 18.446 -3.911 0.45
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="89.227" Depth="0.172"/>
<TopsideChapman PeakHeight="469.727" PeakDensity="1179435.5" PeakScaleHeight="55.234" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
