<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-13 -072 22:10:00.000"
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" >
2026.03.13 (072) 22:10:00</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">
FF202607203132210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.658" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.041" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="360.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="360.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="496.368" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="420.249" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="376.829" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.683" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="65.882" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="20.119" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="32.855" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="74.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="164">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 362.500 365.000 365.000 365.000 365.000 365.000 365.000 365.667 366.333 367.000 367.667 368.333 369.000 369.667 370.333 371.000 371.667 372.333 373.000 373.667 374.333 375.000 375.667 376.333 377.000 377.667 378.333 379.000 379.667 380.333 381.000 381.667 382.333 383.000 383.667 384.333 385.000 385.000 385.000 386.000 387.000 388.000 389.000 390.000 390.000 385.000 385.000 388.333 391.667 395.000 390.000 390.000 390.000 391.667 393.333 395.000 395.000 396.667 398.333 400.000 400.000 401.250 402.500 403.750 405.000 405.000 405.000 405.000 405.000 405.000 405.000 405.000 405.000 407.500 410.000 410.000 412.500 415.000 410.000 410.000 410.000 415.000 415.000 415.000 415.000 415.000 420.000 420.000 420.000 421.250 422.500 423.750 425.000 425.000 425.000 427.500 430.000 430.000 430.000 430.000 430.000 432.500 435.000 435.000 435.000 435.000 435.000 440.000 440.000 440.000 440.000 442.500 445.000 445.000 445.000 445.000 445.000 445.000 450.000 450.000 450.000 450.000 455.000 455.000 455.000 455.000 457.500 460.000 460.000 460.000 460.000 465.000 465.000 470.000 470.000 470.000 475.000 475.000 477.500 480.000 480.000 481.667 483.333 485.000 485.000 490.000 490.000 490.000 490.000 490.000 492.944 496.368 500.401 505.222 511.084 518.369
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 66 0 0 0 63 60 0 69 0 0 0 0 69 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 66 66 0 0 0 0 60 0 63 0 0 0 54 0 63 0 0 0 66 69 0 0 63 66 0 51 0 57 0 0 0 63 0 0 66 69 0 63 66 0 51 69 0 66 66 45 66 69 66 60 63 63 0 0 0 60 63 66 0 57 0 63 63 69 51 60 60 66 63 69 54 57 63 63 0 54 57 60 66 63 66 63 63 66 66 60 60 63 66 54 63 72 75 72 72 66 57 0 69 66 69 0 63 66 0 0 63 69 57 0 63 66 60 57 60 0 48 0 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 -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 -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 -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 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -2.734375 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="164">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.985 145.0 150.0 155.0 160.0 165.0 170.0 171.969 175.0 180.0 185.0 190.0 195.0 200.0 202.954 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 420.249 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.325 0.3 0.264 0.213 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.215 0.24 0.265 0.29 0.314 0.339 0.354 0.391 0.477 0.563 0.651 0.741 0.834 0.931 1.033 1.14 1.252 1.37 1.494 1.624 1.762 1.906 2.059 2.22 2.39 2.569 2.758 2.958 3.17 3.393 3.629 3.879 4.143 4.423 4.719 5.031 5.362 5.711 6.079 6.467 6.874 7.3 7.742 8.196 8.657 9.112 9.547 9.939 10.257 10.47 10.55 10.55 10.529 10.465 10.362 10.225 10.059 9.867 9.655 9.424 9.18 8.925 8.662 8.393 8.12 7.846 7.572 7.3 7.031 6.765 6.504 6.249 5.999 5.756 5.52 5.29 5.068 4.853 4.646 4.445 4.252 4.067 3.888 3.716 3.551 3.393 3.241 3.096 2.956 2.823 2.695 2.573 2.456 2.344 2.237 2.135 2.037 1.944 1.854 1.769 1.688 1.61 1.536 1.465 1.398 1.333 1.271 1.213 1.157 1.103 1.052 1.003 0.957 0.913 0.87 0.83 0.792 0.755 0.72 0.686 0.655 0.624 0.595 0.568 0.541 0.516 0.492 0.469 0.448 0.427 0.407 0.388 0.37 0.353 0.337 0.321 0.306 0.292 0.278 0.265 0.253 0.241 0.23 0.219 0.209

</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="10.55" PeakHeight="420.249" Num="5" zHalfNm="376.829" Error="3.184">
-183.758 -53.218 20.153 -0.213 -0.259
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="92.954" Depth="0.154"/>
<TopsideChapman PeakHeight="420.249" PeakDensity="1380924.4" PeakScaleHeight="32.855" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
