<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.03.09 (068) 22:10:00</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">
FF202606803092210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.542" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.695" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="10.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="515.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" 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="437.806" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="374.235" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.683" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="94.590" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="28.164" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="47.666" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="99.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.590" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="147">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 356.429 357.857 359.286 360.714 362.143 363.571 365.000 360.000 360.000 360.000 360.833 361.667 362.500 363.333 364.167 365.000 366.667 368.333 370.000 375.000 375.000 375.000 375.000 375.000 375.000 375.000 377.500 380.000 375.000 375.000 375.000 380.000 385.000 385.000 385.000 380.000 380.000 380.000 385.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 390.000 392.500 395.000 395.000 395.000 395.000 400.000 400.000 400.000 400.000 400.000 400.000 402.000 404.000 406.000 408.000 410.000 410.000 410.000 410.000 410.000 415.000 415.000 416.667 418.333 420.000 420.000 420.556 421.111 421.667 422.222 422.778 423.333 423.889 424.444 425.000 430.000 430.000 430.000 435.000 435.000 435.000 440.000 440.714 441.429 442.143 442.857 443.571 444.286 445.000 445.000 450.000 450.000 450.000 455.000 455.000 457.500 460.000 460.000 460.000 460.000 465.000 465.000 465.000 470.000 470.000 470.000 475.000 480.000 480.000 480.000 485.000 485.000 485.000 487.500 490.000 491.667 493.333 495.000 496.667 498.333 500.000 501.667 503.333 505.000 506.667 508.333 510.000 511.667 513.333 515.000 520.000 527.480 535.634 544.557 554.364 565.192 577.209 590.623
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 0 0 0 0 0 0 57 69 66 63 0 0 0 0 0 0 0 0 66 54 0 60 0 0 66 0 0 57 63 0 57 0 54 0 57 0 0 51 63 57 0 60 63 0 0 60 75 0 69 78 60 81 66 0 75 0 0 75 0 0 72 0 66 66 0 51 78 66 69 0 54 60 63 0 48 72 0 0 0 0 0 69 63 63 69 63 66 66 51 0 0 51 54 0 0 72 78 75 78 78 69 66 0 60 66 69 72 66 66 72 72 72 72 75 63 66 69 57 54 54 54 54 0 0 0 0 0 0 0 0 51 0 0 0 48 0 48 48 48 0 0 0 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 2.734375 -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 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -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 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -2.734375 -1.953125 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.953125 1.953125 2.734375 -0.390625 2.734375 -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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.862 145.0 150.0 155.0 160.0 165.0 170.0 171.724 175.0 180.0 185.0 190.0 195.0 200.0 202.586 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 437.806 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 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 0.324 0.299 0.263 0.211 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.216 0.241 0.266 0.291 0.316 0.341 0.354 0.387 0.46 0.539 0.625 0.718 0.819 0.927 1.044 1.169 1.303 1.445 1.595 1.755 1.923 2.1 2.286 2.48 2.684 2.897 3.119 3.35 3.591 3.84 4.098 4.366 4.642 4.927 5.221 5.523 5.833 6.151 6.475 6.805 7.139 7.476 7.815 8.153 8.486 8.812 9.127 9.424 9.698 9.942 10.151 10.315 10.43 10.491 10.5 10.498 10.477 10.437 10.377 10.3 10.207 10.099 9.979 9.847 9.705 9.554 9.395 9.23 9.058 8.882 8.702 8.519 8.334 8.147 7.96 7.771 7.584 7.396 7.21 7.025 6.843 6.662 6.483 6.307 6.134 5.963 5.796 5.632 5.471 5.313 5.159 5.008 4.861 4.717 4.576 4.439 4.306 4.176 4.049 3.926 3.806 3.689 3.575 3.465 3.358 3.253 3.152 3.054 2.958 2.866 2.776 2.688 2.604 2.522 2.442 2.365 2.29 2.217 2.147 2.079 2.013 1.949 1.886 1.826 1.768 1.712 1.657 1.604 1.553 1.503 1.455 1.408 1.363 1.319 1.277 1.236 1.196 1.158 1.121 1.085 1.05 1.016 0.984 0.952 0.921 0.892 0.863 0.835 0.808 0.782 0.757 0.733 0.709 0.686 0.664 0.643 0.622 0.602 0.583 0.564 0.546 0.528 0.511 0.495 0.479 0.463 0.448 0.434

</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="10.5" PeakHeight="437.806" Num="5" zHalfNm="374.235" Error="2.098">
-221.902 -26.147 15.847 -3.668 0.65
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="92.586" Depth="0.154"/>
<TopsideChapman PeakHeight="437.806" PeakDensity="1367866.0" PeakScaleHeight="47.666" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
