<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 20:30:00.000"
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="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) 20:30:00</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">
FF202629510222030009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.808" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="34.960" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="12.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="456.201" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.442" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="346.502" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="287.311" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.373" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="85.950" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.829" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="42.570" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="104.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 332.500 335.000 335.000 337.500 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 361.667 363.333 365.000 366.667 368.333 370.000 370.000 370.784 371.569 372.353 373.137 373.922 374.706 375.490 376.275 377.059 377.843 378.627 379.412 380.196 380.980 381.765 382.549 383.333 384.118 384.902 385.686 386.471 387.255 388.039 388.824 389.608 390.392 391.176 391.961 392.745 393.529 394.314 395.098 395.882 396.667 397.451 398.235 399.020 399.804 400.588 401.373 402.157 402.941 403.725 404.510 405.294 406.078 406.863 407.647 408.431 409.216 410.000 412.500 415.000 417.500 420.000 420.000 420.000 423.333 426.667 430.000 430.000 430.000 435.000 435.000 437.500 440.000 440.000 440.000 440.000 445.000 445.000 446.222 447.626 449.255 451.167 453.444 456.201 459.608 463.926 469.576 477.286
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 0 78 81 66 72 75 75 78 69 0 0 78 78 81 81 84 81 78 75 81 84 84 81 78 81 81 0 48 0 0 0 69 69 0 0 0 0 0 48 0 0 0 45 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 66 0 63 0 0 0 63 0 63 0 48 57 63 63 51 57 0 54 0 66 63 63 66 63 66 60 63 63 63 63 66 63 60
</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 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 -1.171875 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="183">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.962 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.698 125.0 130.0 133.397 135.0 140.0 145.0 145.095 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 346.502 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.203 0.964 1.249 1.396 1.442 1.416 1.334 1.293 1.293 1.293 1.293 1.313 1.377 1.441 1.442 1.591 1.765 1.963 2.181 2.419 2.669 2.929 3.194 3.461 3.729 3.997 4.264 4.531 4.797 5.063 5.329 5.596 5.863 6.131 6.401 6.673 6.947 7.224 7.504 7.787 8.075 8.367 8.664 8.967 9.276 9.592 9.916 10.247 10.587 10.935 11.289 11.643 11.984 12.275 12.44 12.45 12.442 12.404 12.336 12.242 12.123 11.983 11.823 11.646 11.455 11.25 11.035 10.81 10.578 10.34 10.097 9.851 9.603 9.353 9.103 8.854 8.607 8.361 8.118 7.878 7.641 7.409 7.18 6.956 6.736 6.522 6.312 6.107 5.907 5.713 5.523 5.339 5.16 4.986 4.817 4.653 4.494 4.339 4.19 4.045 3.905 3.769 3.638 3.511 3.388 3.269 3.154 3.043 2.936 2.832 2.732 2.635 2.542 2.451 2.364 2.28 2.199 2.121 2.045 1.972 1.901 1.834 1.768 1.705 1.644 1.585 1.528 1.473 1.42 1.369 1.32 1.273 1.227 1.183 1.141 1.1 1.06 1.022 0.985 0.95 0.916 0.883 0.851 0.82 0.791 0.762 0.735 0.708 0.683 0.658 0.635 0.612 0.59 0.569 0.548 0.528 0.509 0.491 0.473 0.456 0.44 0.424 0.409 0.394 0.38 0.366 0.353 0.34 0.328 0.316 0.305 0.294 0.283 0.273 0.263 0.254 0.245 0.236 0.227 0.219 0.211 0.204

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.442" PeakHeight="110.0" Num="3" Error="0.0">
-27.985 9.712 -1.765
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.442" EndFrequency="12.45" PeakHeight="346.502" Num="5" zHalfNm="287.311" Error="1.282">
-171.044 -51.937 30.924 -10.483 1.133
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="35.095" Depth="0.149"/>
<TopsideChapman PeakHeight="346.502" PeakDensity="1923108.0" PeakScaleHeight="42.57" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
