<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-02 -061 15:30:00.000"
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: 90% PACIFIC flags: 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" >
2026.03.02 (061) 15:30:00</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">
FF202606103021530009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.488" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.359" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="205.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="205.000" 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="10.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" 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="3.401" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.365" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="379.357" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.733" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.451" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="145.550" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.159" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.065" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="184.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.330" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="144">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
205.000 210.000 213.000 216.000 219.000 222.000 225.000 235.000 243.333 251.667 260.000 268.333 276.667 285.000 290.000 295.000 300.000 305.000 310.000 315.000 315.000 325.000 320.000 330.000 330.000 330.000 332.500 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 347.000 349.000 351.000 353.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 377.857 380.714 383.571 386.429 389.286 392.143 395.000 395.000 397.500 400.000 400.000 400.000 405.000 405.000 405.000 410.000 410.000 415.000 417.500 420.000 420.000 422.500 425.000 425.000 425.000 430.000 430.000 435.000 435.000 437.500 440.000 445.000 445.000 445.000 445.000 450.000 450.000 455.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 470.000 475.000 480.000 480.000 480.000 482.500 485.000 485.000 485.000 495.000 500.000 505.000 505.000 510.000 510.000 515.000 520.000 527.222 534.444 541.667 548.889 556.111 563.333 570.556 577.778 585.000 594.963 605.782 617.575 630.477 644.653
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 45 0 0 0 0 45 51 0 0 0 0 0 48 45 0 0 0 0 54 48 51 48 48 0 54 0 54 54 54 54 57 57 60 57 0 0 51 54 0 54 51 48 0 0 60 0 63 0 63 63 63 63 63 63 60 63 66 63 66 66 63 60 66 63 63 51 0 0 0 0 0 0 54 60 0 54 60 63 60 66 66 63 66 57 0 51 60 48 60 63 63 63 63 60 60 54 60 51 54 60 57 57 60 57 60 66 63 69 57 57 54 54 60 51 45 0 57 0 51 51 0 51 48 45 48 42 45 45 48 0 0 45 0 0 0 0 0 42 42 0 0 42 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 2.734375 -0.390625 1.171875 2.734375 -0.390625 -0.390625 -1.953125 -2.734375 2.734375 2.734375 -0.390625 0.390625 -0.390625 2.734375 0.390625 -1.953125 -0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 0.390625 -1.953125 -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 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 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -2.734375 0.390625 -2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 2.734375 -0.390625 -0.390625 0.390625 1.953125 0.390625 -0.390625 0.390625 0.390625 0.390625 -2.734375 -1.953125 0.390625 2.734375 -1.171875 -2.734375 -2.734375 -0.390625 -0.390625 0.390625
</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" >
89.481 90.0 95.0 100.0 105.0 110.0 111.507 113.014 114.521 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 379.357 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.288 2.943 3.29 3.401 3.278 3.278 3.401 3.415 3.561 3.702 3.841 3.979 4.117 4.256 4.395 4.536 4.679 4.824 4.972 5.121 5.273 5.428 5.585 5.744 5.906 6.071 6.238 6.407 6.579 6.753 6.929 7.106 7.285 7.466 7.649 7.833 8.018 8.204 8.391 8.579 8.768 8.957 9.147 9.337 9.527 9.716 9.905 10.093 10.279 10.462 10.643 10.819 10.99 11.153 11.305 11.444 11.566 11.667 11.742 11.787 11.8 11.8 11.794 11.781 11.759 11.729 11.692 11.649 11.598 11.541 11.478 11.41 11.336 11.258 11.174 11.087 10.995 10.9 10.801 10.698 10.593 10.485 10.375 10.263 10.148 10.032 9.914 9.795 9.675 9.553 9.431 9.308 9.184 9.061 8.936 8.812 8.688 8.564 8.44 8.316 8.193 8.07 7.948 7.827 7.706 7.586 7.467 7.349 7.231 7.115 7.0 6.886 6.773 6.661 6.551 6.441 6.333 6.226 6.121 6.016 5.914 5.812 5.712 5.613 5.515 5.419 5.324 5.23 5.138 5.047 4.957 4.869 4.782 4.697 4.612 4.529 4.448 4.367 4.288 4.211 4.134 4.059 3.985 3.912 3.84 3.77 3.701 3.633 3.566 3.5 3.435 3.372 3.309 3.248 3.188 3.128 3.07 3.013 2.957 2.902 2.848 2.794 2.742 2.691 2.64 2.591 2.542 2.495 2.448 2.402 2.357 2.312 2.269 2.226 2.184 2.143 2.102 2.063 2.024 1.986 1.948 1.911 1.875 1.84 1.805 1.771

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.401" PeakHeight="110.0" Num="3" Error="0.0">
-30.508 13.162 -3.173
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.401" EndFrequency="11.8" PeakHeight="379.357" Num="5" zHalfNm="268.733" Error="6.927">
-222.075 -55.607 14.608 -2.993 1.231
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.521" Depth="0.123"/>
<TopsideChapman PeakHeight="379.357" PeakDensity="1727543.4" PeakScaleHeight="81.065" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
