<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-27 -086 13:30:00.000"
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) 13:30:00</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">
FF202608603271330009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.565" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.400" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="11.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.000" 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="3.312" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.324" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="362.596" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="261.913" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.467" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="132.567" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.144" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="73.487" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="169.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="133">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 295.000 296.667 298.333 300.000 300.000 300.000 305.000 305.000 305.000 310.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 337.000 339.000 341.000 343.000 345.000 347.000 349.000 351.000 353.000 355.000 355.000 360.000 362.500 365.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 397.500 400.000 400.000 405.000 405.000 410.000 415.000 415.000 415.000 415.000 415.000 420.000 425.000 425.000 425.000 430.000 430.000 430.000 435.000 435.000 435.000 435.000 440.000 440.000 440.000 445.000 445.000 445.000 445.000 445.000 450.000 450.000 450.000 455.000 457.500 460.000 465.000 465.000 465.000 470.000 470.000 470.000 475.000 480.000 482.500 485.000 490.000 490.000 495.000 500.000 505.000 510.000 515.773 522.089 529.029 536.691 545.192 554.678 565.332 577.384 591.127 606.945
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 0 0 51 0 48 54 54 57 51 54 57 57 57 57 57 57 54 48 48 54 54 54 54 54 0 0 57 57 63 66 66 63 60 66 63 63 60 51 0 0 0 0 0 0 0 0 0 57 57 51 0 48 54 60 57 57 60 54 57 48 54 60 54 60 51 60 63 60 60 57 63 63 63 63 63 54 60 66 66 63 54 60 66 60 63 66 66 60 0 60 63 60 60 63 57 60 60 0 57 60 0 57 57 0 54 45 0 54 48 51 48 0 48 0 51 45 48 0 0 0 45 0 48 0 0 45 45 0 45 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 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 -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 -1.171875 -0.390625 -1.171875 -1.953125 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -1.953125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.495 90.0 95.0 100.0 105.0 110.0 111.872 113.745 115.0 115.617 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 362.596 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.228 2.866 3.204 3.312 3.189 3.189 3.271 3.312 3.468 3.631 3.786 3.936 4.084 4.232 4.38 4.53 4.681 4.835 4.992 5.151 5.313 5.479 5.648 5.82 5.995 6.174 6.355 6.54 6.727 6.917 7.11 7.304 7.5 7.699 7.898 8.099 8.302 8.505 8.709 8.913 9.118 9.324 9.529 9.734 9.939 10.142 10.344 10.544 10.741 10.932 11.117 11.292 11.454 11.597 11.714 11.799 11.844 11.85 11.849 11.839 11.818 11.788 11.749 11.702 11.646 11.583 11.512 11.435 11.351 11.261 11.166 11.066 10.961 10.852 10.738 10.622 10.502 10.379 10.253 10.125 9.995 9.864 9.731 9.596 9.461 9.324 9.187 9.05 8.912 8.775 8.637 8.5 8.363 8.226 8.09 7.955 7.821 7.687 7.555 7.424 7.293 7.164 7.037 6.91 6.785 6.662 6.54 6.419 6.3 6.183 6.067 5.952 5.84 5.728 5.619 5.511 5.405 5.3 5.197 5.096 4.997 4.899 4.802 4.708 4.614 4.523 4.433 4.345 4.258 4.173 4.089 4.007 3.926 3.847 3.769 3.693 3.618 3.544 3.472 3.402 3.332 3.264 3.197 3.132 3.068 3.005 2.943 2.882 2.823 2.765 2.708 2.652 2.597 2.544 2.491 2.439 2.389 2.339 2.291 2.243 2.197 2.151 2.106 2.063 2.02 1.978 1.936 1.896 1.857 1.818 1.78 1.743 1.706 1.671 1.636 1.602 1.568 1.535 1.503 1.472 1.441 1.411 1.381 1.352 1.324 1.296

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.312" PeakHeight="110.0" Num="3" Error="0.0">
-30.444 13.067 -3.128
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.312" EndFrequency="11.85" PeakHeight="362.596" Num="5" zHalfNm="261.913" Error="4.148">
-205.554 -55.535 15.565 -3.258 1.803
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.617" Depth="0.123"/>
<TopsideChapman PeakHeight="362.596" PeakDensity="1742214.6" PeakScaleHeight="73.487" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
