<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 17:40:00.000"
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="14.0">
<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: 85% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.10.22 (295) 17:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629510221740009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.634" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="32.667" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="11.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" 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="3.041" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.194" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="359.969" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.288" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.045" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="126.409" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="58.437" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.030" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="158.930" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.300" 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" >
5.8 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 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 317.500 315.000 315.000 320.000 320.000 320.000 320.000 320.556 321.111 321.667 322.222 322.778 323.333 323.889 324.444 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 356.429 357.857 359.286 360.714 362.143 363.571 365.000 366.429 367.857 369.286 370.714 372.143 373.571 375.000 376.429 377.857 379.286 380.714 382.143 383.571 385.000 386.429 387.857 389.286 390.714 392.143 393.571 395.000 396.429 397.857 399.286 400.714 402.143 403.571 405.000 406.429 407.857 409.286 410.714 412.143 413.571 415.000 416.429 417.857 419.286 420.714 422.143 423.571 425.000 426.429 427.857 429.286 430.714 432.143 433.571 435.000 436.429 437.857 439.286 440.714 442.143 443.571 445.000 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 475.000 478.543 482.458 486.807 491.665 497.129 503.319 510.389 518.543 528.050 539.276 552.736 569.168 589.681 616.008
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 66 63 66 0 0 66 0 0 0 0 0 0 0 0 60 69 69 69 69 69 72 72 72 72 72 72 75 72 69 69 69 69 69 63 66 69 69 66 69 69 69 69 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 57 51 57 51 60 57 60 60 60 60 63 63 63 63 63 60 57 60 54 57 54 54 51 0 45
</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 -2.734375 0.390625 0.390625 -0.390625 1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 -1.171875 1.953125 -0.390625 2.734375 -1.171875 -1.953125 2.734375 -0.390625 -0.390625 -1.171875 -1.953125 2.734375 -0.390625 1.953125 0.390625 2.734375 0.390625 -2.734375 -0.390625 1.953125 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 1.171875 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875
</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" >
89.538 90.0 95.0 100.0 105.0 110.0 113.037 115.0 116.073 119.11 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 359.969 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.044 2.632 2.942 3.041 2.919 2.919 2.919 3.041 3.08 3.289 3.486 3.675 3.857 4.035 4.21 4.384 4.556 4.728 4.9 5.073 5.247 5.422 5.599 5.778 5.959 6.144 6.331 6.521 6.715 6.913 7.115 7.321 7.532 7.747 7.968 8.193 8.423 8.659 8.899 9.144 9.393 9.646 9.901 10.158 10.414 10.669 10.918 11.159 11.39 11.605 11.802 11.976 12.124 12.243 12.33 12.382 12.4 12.4 12.394 12.376 12.347 12.307 12.257 12.198 12.129 12.052 11.968 11.876 11.777 11.672 11.561 11.445 11.324 11.199 11.069 10.936 10.8 10.661 10.519 10.375 10.23 10.082 9.934 9.784 9.634 9.483 9.332 9.181 9.03 8.879 8.729 8.579 8.43 8.282 8.135 7.988 7.844 7.7 7.558 7.417 7.277 7.14 7.004 6.869 6.736 6.605 6.476 6.349 6.223 6.1 5.978 5.858 5.74 5.624 5.51 5.397 5.287 5.178 5.072 4.967 4.864 4.763 4.664 4.566 4.471 4.377 4.285 4.194 4.106 4.019 3.934 3.85 3.768 3.688 3.609 3.532 3.456 3.382 3.31 3.239 3.169 3.101 3.034 2.968 2.904 2.841 2.78 2.72 2.661 2.603 2.546 2.491 2.437 2.384 2.332 2.281 2.231 2.183 2.135 2.089 2.043 1.998 1.955 1.912 1.87 1.829 1.789 1.75 1.712 1.674 1.637 1.601 1.566 1.532 1.498 1.465 1.433 1.402 1.371 1.341 1.311 1.283 1.254 1.227 1.2 1.173

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.041" PeakHeight="110.0" Num="3" Error="0.0">
-30.229 12.752 -2.985
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.041" EndFrequency="12.4" PeakHeight="359.969" Num="5" zHalfNm="267.288" Error="2.644">
-208.151 -45.408 10.348 3.121 -0.769
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.11" Depth="0.122"/>
<TopsideChapman PeakHeight="359.969" PeakDensity="1907692.2" PeakScaleHeight="70.03" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
