<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-27 -086 09:10:00.000"
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" >
2026.03.27 (086) 09:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.18" 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">
FF202608603270910009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.299" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.590" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="315.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.313" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="278.127" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="224.451" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.530" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="77.007" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="11.518" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="42.740" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="66.100" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.480" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="91">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 250.000 251.250 252.500 253.750 255.000 250.000 250.000 250.000 248.333 246.667 245.000 245.000 245.000 245.000 245.000 245.000 245.000 250.000 250.000 250.000 245.000 247.500 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 251.154 252.308 253.462 254.615 255.769 256.923 258.077 259.231 260.385 261.538 262.692 263.846 265.000 265.000 265.000 267.500 270.000 270.000 270.000 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 280.000 280.000 280.000 280.000 285.000 285.000 285.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 305.000 305.000 310.000 310.000 315.000 315.000 325.000 325.000 330.614 337.590 346.492 358.244 374.478 398.360 436.962 509.953
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 66 0 57 0 54 69 66 66 0 0 66 69 63 63 63 63 63 72 0 72 60 0 69 69 66 0 0 60 63 0 66 66 63 0 0 0 0 0 0 0 0 0 0 0 0 60 66 66 51 54 0 63 0 66 51 57 63 66 69 72 63 0 72 72 66 69 69 63 69 69 66 69 69 69 63 69 66 69 69 66 66 66 69 69 69 69 69 57 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 -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 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 1.171875 1.171875 1.171875 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="154">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.03 95.0 100.0 105.0 110.0 115.0 120.0 122.761 125.0 130.0 135.0 135.522 140.0 145.0 148.283 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 278.127 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.876 1.137 1.271 1.313 1.29 1.218 1.156 1.156 1.156 1.156 1.156 1.211 1.273 1.313 1.389 1.581 1.753 1.92 2.087 2.258 2.437 2.627 2.831 3.054 3.3 3.577 3.893 4.254 4.664 5.105 5.538 5.923 6.242 6.497 6.698 6.855 6.973 7.059 7.116 7.145 7.15 7.149 7.133 7.099 7.05 6.987 6.911 6.823 6.725 6.619 6.504 6.383 6.256 6.125 5.99 5.852 5.712 5.57 5.428 5.285 5.143 5.0 4.859 4.72 4.582 4.445 4.311 4.18 4.05 3.924 3.799 3.678 3.56 3.444 3.332 3.222 3.115 3.011 2.91 2.812 2.717 2.625 2.535 2.448 2.364 2.283 2.204 2.127 2.053 1.982 1.913 1.846 1.781 1.719 1.658 1.6 1.543 1.489 1.436 1.385 1.336 1.289 1.243 1.199 1.156 1.115 1.076 1.037 1.0 0.965 0.93 0.897 0.865 0.834 0.804 0.776 0.748 0.721 0.695 0.67 0.646 0.623 0.601 0.58 0.559 0.539 0.519 0.501 0.483 0.466 0.449 0.433 0.417 0.402 0.388 0.374 0.361 0.348 0.335 0.323 0.312 0.3 0.29 0.279 0.269 0.26 0.25 0.241 0.233 0.224 0.216 0.208 0.201

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.313" PeakHeight="110.0" Num="3" Error="0.0">
-27.633 9.285 -1.622
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.313" EndFrequency="7.15" PeakHeight="278.127" Num="5" zHalfNm="224.451" Error="3.071">
-128.331 3.84 -12.12 7.809 -1.042
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="38.283" Depth="0.157"/>
<TopsideChapman PeakHeight="278.127" PeakDensity="634274.2" PeakScaleHeight="42.74" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
