<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 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: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.10.30 (303) 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">
FF202630310301740009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.539" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.268" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="265.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="265.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.030" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.189" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="372.145" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.337" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.047" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="138.001" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.061" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="78.245" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="174.470" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
265.000 265.000 275.000 281.250 287.500 293.750 300.000 301.928 303.855 305.783 307.711 309.639 311.566 313.494 315.422 317.349 319.277 321.205 323.133 325.060 326.988 328.916 330.843 332.771 334.699 336.627 338.554 340.482 342.410 344.337 346.265 348.193 350.120 352.048 353.976 355.904 357.831 359.759 361.687 363.614 365.542 367.470 369.398 371.325 373.253 375.181 377.108 379.036 380.964 382.892 384.819 386.747 388.675 390.602 392.530 394.458 396.386 398.313 400.241 402.169 404.096 406.024 407.952 409.880 411.807 413.735 415.663 417.590 419.518 421.446 423.373 425.301 427.229 429.157 431.084 433.012 434.940 436.867 438.795 440.723 442.651 444.578 446.506 448.434 450.361 452.289 454.217 456.145 458.072 460.000 460.000 465.000 470.000 475.000 475.000 480.000 480.000 480.000 485.000 495.000 495.000 500.000 505.000 510.000 515.000 525.000 530.000 540.000 550.000 560.000 575.000 592.542 614.435 642.528
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 60 54 0 63 0 57 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 0 0 0 0 0 0 0 0 0 45 0 0 54 0 0 63 0 0 0 57 63 57 60 57 57 51 63 60 57 57 57 57 57 60 54 54 54 48 51 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 -1.171875 0.390625 -0.390625 -1.953125 -0.390625 1.171875 -0.390625 0.390625 -2.734375 -1.953125 1.171875 -1.953125 2.734375 2.734375 1.171875 -1.171875 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 -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 0.390625 -0.390625 0.390625 -0.390625 -0.390625 2.734375 -1.953125 0.390625 2.734375 -1.171875 -1.171875 -1.953125 -2.734375 -1.953125 0.390625 1.171875 2.734375 -2.734375 -1.171875 -0.390625 2.734375 2.734375 -1.953125 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 -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" >
89.541 90.0 95.0 100.0 105.0 110.0 113.084 115.0 116.167 119.251 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 372.145 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.037 2.623 2.931 3.03 2.908 2.908 2.908 3.03 3.049 3.172 3.291 3.407 3.522 3.637 3.751 3.866 3.982 4.1 4.219 4.34 4.463 4.588 4.715 4.845 4.977 5.113 5.25 5.391 5.535 5.682 5.831 5.984 6.139 6.297 6.458 6.622 6.788 6.956 7.127 7.299 7.473 7.648 7.825 8.001 8.178 8.353 8.527 8.699 8.867 9.03 9.187 9.336 9.474 9.6 9.711 9.803 9.875 9.924 9.948 9.95 9.949 9.94 9.925 9.902 9.872 9.836 9.794 9.746 9.693 9.634 9.57 9.502 9.43 9.354 9.274 9.19 9.104 9.015 8.922 8.828 8.731 8.633 8.532 8.43 8.327 8.222 8.117 8.011 7.903 7.796 7.688 7.579 7.471 7.362 7.254 7.145 7.037 6.93 6.822 6.716 6.609 6.504 6.399 6.295 6.192 6.089 5.988 5.887 5.788 5.69 5.592 5.496 5.401 5.307 5.214 5.122 5.031 4.942 4.854 4.767 4.681 4.596 4.513 4.431 4.35 4.27 4.192 4.115 4.039 3.964 3.89 3.818 3.747 3.676 3.607 3.54 3.473 3.407 3.343 3.28 3.217 3.156 3.096 3.037 2.979 2.922 2.866 2.811 2.758 2.705 2.653 2.601 2.551 2.502 2.454 2.406 2.36 2.314 2.269 2.225 2.182 2.14 2.098 2.057 2.017 1.978 1.939 1.901 1.864 1.828 1.792 1.757 1.723 1.689 1.656 1.624 1.592 1.561 1.53 1.5 1.471 1.442 1.414 1.386 1.359 1.332

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.03" PeakHeight="110.0" Num="3" Error="0.0">
-30.22 12.739 -2.978
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.03" EndFrequency="9.95" PeakHeight="372.145" Num="5" zHalfNm="267.337" Error="2.784">
-210.377 -51.053 7.697 0.092 0.747
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.251" Depth="0.122"/>
<TopsideChapman PeakHeight="372.145" PeakDensity="1228318.9" PeakScaleHeight="78.245" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
