<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 19:20:00.000"
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" >
2026.10.29 (302) 19:20:00</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">
FF202630210291920009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.572" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.458" 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="10.200" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" 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="2.406" 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="/" />
<URSI ID="92" Val="376.871" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="276.314" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.441" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="137.542" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="39.924" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.422" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="163.930" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.460" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="113">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 300.000 300.000 300.000 300.000 300.000 301.250 302.500 303.750 305.000 306.890 308.780 310.671 312.561 314.451 316.341 318.232 320.122 322.012 323.902 325.793 327.683 329.573 331.463 333.354 335.244 337.134 339.024 340.915 342.805 344.695 346.585 348.476 350.366 352.256 354.146 356.037 357.927 359.817 361.707 363.598 365.488 367.378 369.268 371.159 373.049 374.939 376.829 378.720 380.610 382.500 384.390 386.280 388.171 390.061 391.951 393.841 395.732 397.622 399.512 401.402 403.293 405.183 407.073 408.963 410.854 412.744 414.634 416.524 418.415 420.305 422.195 424.085 425.976 427.866 429.756 431.646 433.537 435.427 437.317 439.207 441.098 442.988 444.878 446.768 448.659 450.549 452.439 454.329 456.220 458.110 460.000 460.000 465.000 470.000 470.000 470.000 475.000 480.000 485.000 490.000 495.000 505.000 510.000 515.000 525.000 535.000 546.667 558.333 574.155 593.399 617.309 647.818
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 57 66 72 63 72 0 0 0 72 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 0 0 0 0 0 57 66 60 57 63 63 60 60 60 60 60 60 60 57 60 60 0 60 60 60 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 1.953125 -1.953125 1.953125 -0.390625 -0.390625 -0.390625 0.390625 0.390625 -2.734375 0.390625 -2.734375 -1.171875 -1.171875 2.734375 -1.171875 0.390625 0.390625 -0.390625 -0.390625 -1.953125 -2.734375 1.171875 -0.390625 0.390625 -1.171875 -0.390625 2.734375 -0.390625 1.171875 1.953125 0.390625 -1.171875 0.390625 2.734375 1.171875 -0.390625 -1.953125 0.390625 -0.390625 -1.953125 -1.953125 -0.390625 -0.390625 0.390625 -1.171875 -0.390625 0.390625 -0.390625 0.390625 0.390625 -0.390625 0.390625 -2.734375 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 2.734375 -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" >
89.66 90.0 95.0 100.0 105.0 110.0 115.0 116.058 120.0 122.115 125.0 128.173 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 376.871 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.615 2.083 2.328 2.406 2.321 2.28 2.28 2.28 2.34 2.406 2.46 2.602 2.741 2.878 3.014 3.15 3.285 3.422 3.559 3.697 3.837 3.979 4.122 4.268 4.416 4.566 4.718 4.874 5.031 5.192 5.355 5.521 5.691 5.862 6.037 6.215 6.395 6.578 6.763 6.951 7.14 7.331 7.523 7.716 7.908 8.1 8.29 8.477 8.66 8.837 9.007 9.168 9.318 9.455 9.577 9.683 9.769 9.834 9.878 9.898 9.9 9.898 9.889 9.872 9.847 9.815 9.776 9.731 9.679 9.622 9.56 9.492 9.42 9.343 9.262 9.178 9.09 8.998 8.904 8.807 8.708 8.606 8.503 8.398 8.291 8.184 8.075 7.965 7.854 7.743 7.631 7.52 7.407 7.295 7.183 7.072 6.96 6.849 6.739 6.629 6.52 6.411 6.303 6.196 6.09 5.985 5.882 5.779 5.677 5.576 5.477 5.378 5.281 5.185 5.091 4.997 4.905 4.814 4.725 4.636 4.549 4.464 4.38 4.296 4.215 4.134 4.055 3.977 3.901 3.826 3.752 3.679 3.607 3.537 3.468 3.4 3.334 3.268 3.204 3.141 3.079 3.018 2.958 2.899 2.842 2.785 2.73 2.675 2.622 2.57 2.518 2.468 2.418 2.37 2.322 2.276 2.23 2.185 2.141 2.098 2.056 2.014 1.973 1.934 1.894 1.856 1.819 1.782 1.746 1.71 1.676 1.642 1.608 1.576 1.544 1.512 1.481 1.451 1.422 1.393 1.364 1.337 1.309 1.283 1.257 1.231

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.406" PeakHeight="110.0" Num="3" Error="0.0">
-29.607 11.86 -2.593
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.406" EndFrequency="9.9" PeakHeight="376.871" Num="5" zHalfNm="276.314" Error="1.978">
-219.582 -38.973 9.009 0.865 -0.017
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.173" Depth="0.126"/>
<TopsideChapman PeakHeight="376.871" PeakDensity="1216005.0" PeakScaleHeight="75.422" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
