<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-30 -089 17:30:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2 cusps do not match</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" >
2026.03.30 (089) 17:30:00</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">
FF202608903301730009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="12.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.533" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.395" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.500" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="516.163" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.157" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.250" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="374.366" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="283.199" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.257" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="118.984" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.987" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="66.175" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="167.320" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.030" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="139">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.85 11.9 11.95 12.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 285.000 287.500 290.000 295.000 295.000 295.000 300.000 300.000 302.500 305.000 310.000 310.000 315.000 315.000 320.000 320.000 325.000 325.000 330.000 332.500 335.000 335.000 337.000 339.000 341.000 343.000 345.000 350.000 350.000 350.000 355.000 355.000 355.000 360.000 362.500 365.000 366.250 367.500 368.750 370.000 370.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 395.000 400.000 400.000 400.000 401.667 403.333 405.000 405.000 407.273 409.545 411.818 414.091 416.364 418.636 420.909 423.182 425.455 427.727 430.000 430.000 432.500 435.000 437.500 440.000 440.000 440.000 445.000 445.000 445.000 445.000 445.000 450.000 450.000 450.000 450.000 455.000 456.000 457.000 458.000 459.000 460.000 460.000 460.000 460.000 465.000 466.667 468.333 470.000 471.667 473.333 475.000 475.000 477.000 479.000 481.000 483.000 485.000 485.000 485.000 485.000 490.000 493.333 496.667 500.000 500.000 500.000 500.000 502.500 505.000 510.000 512.939 516.163 519.718 523.655 528.042 532.958 538.507 544.819 552.062 560.459 570.311 582.030
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 51 0 51 48 0 51 51 48 0 51 57 63 63 60 51 57 51 57 57 0 54 57 0 0 45 0 0 51 57 60 60 60 54 51 51 57 0 0 0 54 57 60 63 66 66 69 66 66 66 63 66 69 63 66 66 63 66 66 63 0 0 60 0 0 0 0 0 57 0 0 0 0 0 51 54 0 60 0 48 51 57 54 57 60 57 54 51 0 57 51 54 0 48 0 0 51 54 0 54 54 0 0 0 0 0 45 45 0 0 0 0 45 54 57 57 57 0 0 51 54 51 54 0 0 51 0 54 51 51 48 54 51 51 48 0 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 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 -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 2.734375 -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 -1.171875 -0.390625 2.734375 -1.953125 2.734375
</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" >
89.52 90.0 95.0 100.0 105.0 110.0 112.529 115.0 115.059 117.588 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 374.366 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.123 2.732 3.054 3.157 3.035 3.035 3.035 3.157 3.234 3.388 3.537 3.683 3.828 3.971 4.115 4.258 4.403 4.547 4.694 4.841 4.989 5.14 5.291 5.445 5.6 5.757 5.916 6.076 6.239 6.404 6.571 6.739 6.91 7.084 7.259 7.437 7.617 7.799 7.984 8.172 8.362 8.555 8.751 8.949 9.151 9.355 9.563 9.773 9.987 10.204 10.423 10.644 10.867 11.088 11.306 11.515 11.706 11.864 11.969 12.0 12.0 11.992 11.971 11.938 11.894 11.839 11.774 11.699 11.616 11.525 11.426 11.32 11.207 11.089 10.966 10.837 10.704 10.568 10.428 10.285 10.139 9.991 9.841 9.69 9.537 9.384 9.23 9.075 8.92 8.765 8.611 8.457 8.303 8.151 7.999 7.848 7.699 7.551 7.404 7.259 7.116 6.974 6.833 6.695 6.559 6.424 6.291 6.161 6.032 5.905 5.78 5.658 5.537 5.418 5.302 5.188 5.075 4.965 4.856 4.75 4.646 4.544 4.443 4.345 4.249 4.154 4.061 3.971 3.882 3.795 3.709 3.626 3.544 3.464 3.386 3.309 3.234 3.16 3.089 3.018 2.949 2.882 2.816 2.752 2.689 2.627 2.567 2.508 2.451 2.394 2.339 2.285 2.233 2.181 2.131 2.082 2.034 1.987 1.941 1.896 1.852 1.809 1.767 1.726 1.686 1.647 1.609 1.572 1.535 1.5 1.465 1.431 1.398 1.365 1.334 1.303 1.272 1.243 1.214 1.186 1.158 1.131 1.105 1.079 1.054 1.03

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.157" PeakHeight="110.0" Num="3" Error="0.0">
-30.323 12.891 -3.048
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.157" EndFrequency="12.0" PeakHeight="374.366" Num="5" zHalfNm="283.199" Error="1.624">
-200.466 -76.466 22.288 -2.941 0.807
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.588" Depth="0.122"/>
<TopsideChapman PeakHeight="374.366" PeakDensity="1786600.5" PeakScaleHeight="66.175" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
