<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 17:50:00.000"
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) 17:50:00</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">
FF202629510221750009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="12.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.661" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.390" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="11.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" 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="2.997" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.172" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="358.695" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="265.957" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.097" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="128.092" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.360" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.065" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="155.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.430" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="138">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 310.000 315.000 315.417 315.833 316.250 316.667 317.083 317.500 317.917 318.333 318.750 319.167 319.583 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 346.328 347.656 348.984 350.313 351.641 352.969 354.297 355.625 356.953 358.281 359.609 360.938 362.266 363.594 364.922 366.250 367.578 368.906 370.234 371.563 372.891 374.219 375.547 376.875 378.203 379.531 380.859 382.188 383.516 384.844 386.172 387.500 388.828 390.156 391.484 392.813 394.141 395.469 396.797 398.125 399.453 400.781 402.109 403.438 404.766 406.094 407.422 408.750 410.078 411.406 412.734 414.063 415.391 416.719 418.047 419.375 420.703 422.031 423.359 424.688 426.016 427.344 428.672 430.000 432.500 435.000 435.000 440.000 440.000 445.000 445.000 450.000 455.000 455.000 455.000 460.000 465.000 470.000 470.000 475.000 480.000 490.000 495.120 501.032 507.934 516.098 525.905 537.907 552.934 572.292 598.172 634.535
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 66 66 66 0 0 0 0 0 0 0 0 0 0 0 69 69 72 72 72 72 72 69 66 69 72 69 69 0 66 66 66 63 60 60 63 66 69 66 69 72 72 72 69 72 0 60 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 42 0 0 0 0 0 0 0 0 0 0 42 0 0 45 0 0 0 54 0 54 60 54 60 57 63 60 57 63 63 63 66 66 63 63 63 63 63 60 60 60 60 57 57 0 0 42
</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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -1.171875 0.390625 0.390625 0.390625 1.171875 0.390625 2.734375 0.390625 -1.953125 -1.171875 2.734375 0.390625 -1.171875 -2.734375 0.390625 1.171875 -0.390625 -1.953125 0.390625 -1.171875 -1.953125 1.171875 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 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="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.546 90.0 95.0 100.0 105.0 110.0 113.232 115.0 116.465 119.697 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 358.695 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.015 2.594 2.9 2.997 2.875 2.875 2.875 2.997 3.01 3.218 3.417 3.608 3.793 3.974 4.153 4.329 4.505 4.68 4.855 5.032 5.209 5.389 5.57 5.755 5.942 6.133 6.328 6.527 6.73 6.939 7.153 7.372 7.598 7.83 8.069 8.314 8.566 8.824 9.089 9.359 9.633 9.91 10.188 10.464 10.736 10.999 11.251 11.488 11.707 11.904 12.078 12.226 12.348 12.441 12.506 12.542 12.55 12.55 12.541 12.52 12.489 12.447 12.395 12.334 12.265 12.187 12.102 12.009 11.91 11.805 11.694 11.578 11.457 11.332 11.203 11.07 10.934 10.795 10.654 10.511 10.366 10.219 10.071 9.922 9.772 9.622 9.471 9.321 9.17 9.019 8.869 8.72 8.571 8.423 8.276 8.13 7.985 7.841 7.699 7.558 7.418 7.28 7.144 7.009 6.876 6.745 6.615 6.487 6.361 6.237 6.114 5.994 5.875 5.758 5.643 5.53 5.419 5.309 5.202 5.096 4.992 4.89 4.79 4.691 4.595 4.5 4.407 4.315 4.225 4.137 4.051 3.966 3.883 3.802 3.722 3.644 3.567 3.492 3.418 3.346 3.275 3.205 3.137 3.071 3.005 2.941 2.879 2.817 2.757 2.698 2.64 2.584 2.529 2.474 2.421 2.369 2.318 2.269 2.22 2.172 2.125 2.08 2.035 1.991 1.948 1.906 1.865 1.825 1.785 1.747 1.709 1.672 1.636 1.601 1.566 1.532 1.499 1.467 1.435 1.404 1.374 1.344 1.315 1.286 1.258 1.231

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.997" PeakHeight="110.0" Num="3" Error="0.0">
-30.193 12.699 -2.96
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.997" EndFrequency="12.55" PeakHeight="358.695" Num="5" zHalfNm="265.957" Error="2.724">
-211.087 -36.852 5.014 5.194 -1.267
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.697" Depth="0.122"/>
<TopsideChapman PeakHeight="358.695" PeakDensity="1954125.2" PeakScaleHeight="71.065" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
