<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-14 -073 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 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" >
2026.03.14 (073) 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">
FF202607303142210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.507" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.311" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.550" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="428.481" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="359.654" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.683" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="100.865" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="23.597" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="51.681" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="101.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.910" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="145">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.1 2.15 2.2 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 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 330.000 330.000 332.500 335.000 337.500 340.000 337.500 335.000 335.000 335.000 335.000 335.000 336.364 337.727 339.091 340.455 341.818 343.182 344.545 345.909 347.273 348.636 350.000 345.000 350.000 350.833 351.667 352.500 353.333 354.167 355.000 356.667 358.333 360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 360.000 365.000 370.000 367.500 365.000 370.000 370.000 370.000 370.000 370.000 370.000 372.000 374.000 376.000 378.000 380.000 381.250 382.500 383.750 385.000 380.000 382.500 385.000 385.000 385.000 385.000 385.000 385.000 390.000 391.667 393.333 395.000 395.000 396.667 398.333 400.000 400.000 401.316 402.632 403.947 405.263 406.579 407.895 409.211 410.526 411.842 413.158 414.474 415.789 417.105 418.421 419.737 421.053 422.368 423.684 425.000 425.000 430.000 431.250 432.500 433.750 435.000 435.000 440.000 440.000 440.000 445.000 445.000 445.000 450.000 455.000 455.000 460.000 460.000 460.000 465.000 465.000 470.000 475.000 475.000 480.000 485.000 485.000 490.000 490.000 495.000 500.000 505.000 510.000 520.000 523.810 528.038 532.759 538.064 544.068 550.919 558.810 567.996 578.827 591.787
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 57 0 0 0 63 0 69 0 0 69 78 0 0 0 0 0 0 0 69 0 0 69 0 69 0 0 0 0 0 72 51 0 57 60 57 0 60 0 0 72 63 0 63 0 0 57 0 69 63 0 0 0 0 63 0 0 0 0 51 0 0 0 57 0 0 75 78 0 81 0 0 75 0 0 69 72 0 0 63 72 0 0 0 0 0 0 0 60 0 0 0 66 0 0 0 0 51 0 66 69 63 0 0 0 63 60 63 69 72 69 66 69 0 63 60 60 69 57 72 72 72 63 60 63 63 54 66 72 69 63 66 72 69 60 57 60 63 63 60 63 60 57 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 -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 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 -0.390625 -0.390625 -0.390625 -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 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 -2.734375 1.171875 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.015 145.0 150.0 155.0 160.0 165.0 170.0 172.031 175.0 180.0 185.0 190.0 195.0 200.0 203.046 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 428.481 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 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 0.264 0.289 0.314 0.339 0.354 0.382 0.451 0.521 0.595 0.674 0.759 0.851 0.951 1.06 1.179 1.308 1.449 1.602 1.767 1.945 2.137 2.341 2.559 2.789 3.032 3.287 3.553 3.829 4.115 4.41 4.712 5.02 5.333 5.649 5.966 6.283 6.598 6.908 7.211 7.505 7.787 8.053 8.302 8.529 8.732 8.908 9.054 9.168 9.247 9.291 9.3 9.299 9.286 9.257 9.213 9.156 9.087 9.006 8.915 8.814 8.705 8.588 8.464 8.335 8.2 8.061 7.918 7.772 7.624 7.473 7.321 7.168 7.015 6.861 6.708 6.555 6.403 6.252 6.102 5.954 5.807 5.662 5.519 5.379 5.24 5.104 4.97 4.839 4.71 4.584 4.461 4.34 4.221 4.105 3.992 3.882 3.774 3.668 3.565 3.465 3.367 3.272 3.179 3.088 3.0 2.914 2.83 2.749 2.669 2.592 2.517 2.444 2.373 2.304 2.237 2.172 2.109 2.047 1.987 1.929 1.872 1.817 1.764 1.712 1.662 1.613 1.565 1.519 1.474 1.431 1.389 1.348 1.308 1.269 1.231 1.195 1.16 1.125 1.092 1.06 1.028 0.998 0.968 0.939 0.911 0.884 0.858 0.833 0.808 0.784 0.761 0.738 0.716 0.695 0.674 0.654 0.635 0.616 0.598 0.58 0.563 0.546 0.53 0.514 0.499 0.484

</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="9.3" PeakHeight="428.481" Num="5" zHalfNm="359.654" Error="4.031">
-219.351 -10.431 3.906 -0.611 1.052
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="93.046" Depth="0.154"/>
<TopsideChapman PeakHeight="428.481" PeakDensity="1073076.9" PeakScaleHeight="51.681" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
