<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-15 -074 03:10:00.000"
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 11 0 0 0 0 0 0 0 0 1 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" >
2026.03.15 (074) 03:10:00</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">
FF202607403150310009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.411" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.017" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="195.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="195.000" 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="8.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="295.000" 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="2.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="271.628" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="211.809" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.667" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="84.277" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="17.626" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="45.256" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="60.910" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="8.020" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="132">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.25 2.3 2.35 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
195.000 196.250 197.500 198.750 200.000 197.500 195.000 195.000 200.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 203.750 202.500 201.250 200.000 200.000 200.000 200.000 202.500 205.000 205.000 205.000 205.000 205.000 205.000 205.000 205.000 210.000 210.000 210.000 210.000 215.000 211.667 208.333 205.000 205.000 205.000 205.000 210.000 210.000 210.000 210.000 210.000 211.250 212.500 213.750 215.000 210.000 212.500 215.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 230.000 230.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 230.000 230.000 230.000 235.000 235.000 235.000 235.625 236.250 236.875 237.500 238.125 238.750 239.375 240.000 240.000 245.000 245.000 245.000 245.000 245.000 247.500 250.000 255.000 255.000 260.000 260.000 260.000 260.000 260.000 265.000 265.000 270.000 270.000 270.000 275.000 280.000 280.000 280.000 285.000 290.000 295.000 295.000 295.000 305.000 310.000 310.000 314.715 320.200 326.661 334.382 343.774 355.443 370.333 389.991 417.142 457.080
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 63 0 0 63 66 69 0 0 0 0 60 69 0 0 0 60 0 0 0 72 69 72 75 57 72 0 0 0 0 0 66 72 69 69 0 0 0 0 0 75 75 0 66 78 75 69 72 72 0 0 0 0 60 0 66 66 0 0 66 0 69 69 66 69 60 66 69 0 0 0 0 0 63 0 0 0 66 63 60 63 0 0 0 0 57 63 57 54 54 60 60 60 0 57 0 66 60 66 57 0 63 72 72 72 75 69 72 72 69 60 60 60 0 66 69 75 72 75 78 69 69 72 75 72 63 66 69 66 69 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 0.390625 0.390625 1.171875 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 1.171875 -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 -1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="165">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 129.833 130.0 135.0 140.0 145.0 149.667 150.0 155.0 160.0 165.0 169.5 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 271.628 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.348 0.33 0.298 0.248 0.248 0.248 0.248 0.248 0.248 0.25 0.277 0.303 0.33 0.354 0.361 0.447 0.593 0.874 1.548 3.066 4.408 5.323 6.011 6.559 7.009 7.385 7.701 7.967 8.19 8.374 8.522 8.637 8.721 8.774 8.798 8.8 8.795 8.772 8.73 8.671 8.596 8.507 8.406 8.293 8.171 8.04 7.901 7.755 7.605 7.449 7.291 7.129 6.965 6.8 6.635 6.469 6.303 6.138 5.974 5.812 5.651 5.493 5.336 5.183 5.031 4.883 4.738 4.595 4.456 4.32 4.187 4.057 3.931 3.807 3.687 3.57 3.457 3.346 3.239 3.134 3.033 2.934 2.839 2.746 2.656 2.569 2.484 2.403 2.323 2.246 2.172 2.1 2.03 1.962 1.897 1.834 1.772 1.713 1.656 1.6 1.547 1.495 1.444 1.396 1.349 1.304 1.26 1.217 1.176 1.137 1.098 1.061 1.025 0.991 0.957 0.925 0.894 0.863 0.834 0.806 0.779 0.752 0.727 0.702 0.678 0.656 0.633 0.612 0.591 0.571 0.552 0.533 0.515 0.498 0.481 0.464 0.449 0.433 0.419 0.405 0.391 0.378 0.365 0.352 0.34 0.329 0.318 0.307 0.297 0.286 0.277 0.267 0.258 0.25 0.241 0.233 0.225 0.217 0.21 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="8.8" PeakHeight="271.628" Num="5" zHalfNm="211.809" Error="1.549">
-136.626 54.759 -23.589 4.43 -1.102
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="59.5" Depth="0.106"/>
<TopsideChapman PeakHeight="271.628" PeakDensity="960794.06" PeakScaleHeight="45.256" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
