<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 20:00:00.000"
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="12.0">
<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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.19 (292) 20:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202629210192000009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.414" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.351" 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="10.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="295.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="295.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.801" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.970" 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="/" />
<URSI ID="92" Val="408.634" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="286.656" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.465" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="169.876" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.223" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="89.374" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="180.100" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.810" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="118">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 296.667 298.333 300.000 300.000 300.000 301.250 302.500 303.750 305.000 305.000 306.591 308.182 309.773 311.364 312.955 314.545 316.136 317.727 319.318 320.909 322.500 324.091 325.682 327.273 328.864 330.455 332.045 333.636 335.227 336.818 338.409 340.000 340.000 342.000 344.000 346.000 348.000 350.000 355.000 356.250 357.500 358.750 360.000 365.000 365.000 365.000 365.000 370.000 375.000 380.000 382.816 385.632 388.448 391.264 394.080 396.896 399.712 402.528 405.344 408.160 410.976 413.792 416.608 419.424 422.240 425.056 427.872 430.688 433.504 436.320 439.136 441.952 444.768 447.584 450.400 453.216 456.032 458.848 461.664 464.480 467.296 470.112 472.928 475.744 478.560 481.376 484.192 487.008 489.824 492.640 495.456 498.272 501.088 503.904 506.720 509.536 512.352 515.169 517.985 520.801 523.617 528.215 535.000 540.000 545.000 550.000 560.000 565.000 575.000 585.000 600.000 615.000 630.000 650.000 670.000 700.000 732.621
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 60 66 66 0 0 0 63 66 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 69 0 0 0 0 0 66 69 0 0 0 0 72 60 0 54 0 0 66 63 63 54 0 57 54 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 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 1.171875 1.171875 -0.390625 2.734375 -0.390625 0.390625 1.953125 0.390625 -0.390625 0.390625 -2.734375 -0.390625 2.734375 0.390625 1.953125 -2.734375 -2.734375 1.953125 -1.953125 2.734375 -1.171875 1.171875 -2.734375 1.953125 -2.734375 -0.390625 2.734375 -1.171875 1.171875 2.734375 0.390625 -1.171875 -1.953125 0.390625 -0.390625 0.390625 2.734375 -1.171875 -1.171875 -2.734375 -2.734375 0.390625 -2.734375 -2.734375 2.734375 -1.953125 -2.734375 -0.390625 2.734375 2.734375 -2.734375 1.953125 2.734375 -1.953125 2.734375 -0.390625 2.734375 2.734375 2.734375 1.171875 1.171875 -0.390625 -1.953125 2.734375 2.734375 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" >
89.768 90.0 95.0 100.0 105.0 110.0 115.0 118.375 120.0 125.0 126.749 130.0 135.0 135.124 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 408.634 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22 1.32 1.706 1.906 1.97 1.923 1.837 1.837 1.837 1.837 1.889 1.968 1.97 2.104 2.236 2.368 2.501 2.638 2.78 2.928 3.082 3.243 3.411 3.586 3.768 3.957 4.151 4.351 4.553 4.759 4.966 5.174 5.381 5.588 5.794 5.998 6.2 6.4 6.597 6.792 6.985 7.175 7.363 7.548 7.731 7.911 8.088 8.262 8.434 8.602 8.767 8.929 9.086 9.24 9.388 9.532 9.669 9.8 9.923 10.037 10.142 10.235 10.316 10.384 10.437 10.475 10.495 10.5 10.5 10.495 10.484 10.467 10.444 10.416 10.383 10.345 10.302 10.255 10.203 10.147 10.087 10.024 9.957 9.887 9.814 9.738 9.66 9.579 9.496 9.41 9.323 9.234 9.143 9.051 8.958 8.863 8.767 8.671 8.573 8.475 8.376 8.277 8.177 8.077 7.977 7.877 7.776 7.676 7.576 7.476 7.376 7.277 7.178 7.079 6.981 6.884 6.787 6.69 6.595 6.5 6.405 6.312 6.219 6.127 6.036 5.945 5.856 5.767 5.68 5.593 5.507 5.422 5.338 5.255 5.173 5.092 5.012 4.933 4.855 4.778 4.702 4.626 4.552 4.479 4.407 4.336 4.266 4.196 4.128 4.061 3.994 3.929 3.864 3.801 3.738 3.676 3.616 3.556 3.497 3.439 3.382 3.325 3.27 3.215 3.161 3.108 3.056 3.005 2.954 2.905 2.856 2.808 2.76 2.714 2.668 2.623 2.578 2.535 2.492 2.449 2.408 2.367 2.327 2.287 2.248 2.21 2.172

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.97" PeakHeight="110.0" Num="3" Error="0.0">
-29.022 11.054 -2.264
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.97" EndFrequency="10.5" PeakHeight="408.634" Num="5" zHalfNm="286.656" Error="3.517">
-264.777 -16.233 11.954 -7.164 2.71
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="25.124" Depth="0.133"/>
<TopsideChapman PeakHeight="408.634" PeakDensity="1367866.0" PeakScaleHeight="89.374" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
