<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 19:10:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o 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" >
2026.10.29 (302) 19:10:00</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">
FF202630210291910009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.000" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.574" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.738" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.493" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="377.350" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="279.983" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.417" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="133.080" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="40.004" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="73.781" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="162.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="116">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.25 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 10.0
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 295.000 300.000 300.000 302.500 305.000 310.000 310.000 311.706 313.412 315.118 316.824 318.529 320.235 321.941 323.647 325.353 327.059 328.765 330.471 332.176 333.882 335.588 337.294 339.000 340.706 342.412 344.118 345.824 347.529 349.235 350.941 352.647 354.353 356.059 357.765 359.471 361.176 362.882 364.588 366.294 368.000 369.706 371.412 373.118 374.824 376.529 378.235 379.941 381.647 383.353 385.059 386.765 388.471 390.176 391.882 393.588 395.294 397.000 398.706 400.412 402.118 403.824 405.529 407.235 408.941 410.647 412.353 414.059 415.765 417.471 419.176 420.882 422.588 424.294 426.000 427.706 429.412 431.118 432.824 434.529 436.235 437.941 439.647 441.353 443.059 444.765 446.471 448.176 449.882 451.588 453.294 455.000 455.000 460.000 460.000 465.000 470.000 470.000 470.000 475.000 480.000 485.000 490.000 495.000 500.000 510.000 515.000 522.500 530.000 540.000 552.905 568.586 588.047 612.844 645.518
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 60 66 0 69 60 66 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 0 0 0 60 0 63 66 66 57 66 66 66 66 66 66 66 63 60 60 0 60 60 57 0 57 54 51
</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 1.171875 -0.390625 -1.953125 2.734375 1.953125 0.390625 2.734375 -0.390625 -0.390625 -1.171875 1.171875 -1.171875 -2.734375 1.171875 -1.953125 0.390625 1.171875 1.953125 -1.171875 -0.390625 -2.734375 1.953125 -2.734375 -0.390625 -2.734375 2.734375 -0.390625 -1.171875 2.734375 0.390625 2.734375 1.171875 -2.734375 0.390625 2.734375 2.734375 1.171875 0.390625 -0.390625 -1.171875 0.390625 0.390625 -0.390625 1.171875 -1.953125 -2.734375 -0.390625 -1.953125 0.390625 1.171875 1.953125 0.390625 -1.953125 0.390625 0.390625 1.171875 -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
</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" >
89.64 90.0 95.0 100.0 105.0 110.0 115.0 115.62 120.0 121.24 125.0 126.86 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 377.35 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.674 2.159 2.412 2.493 2.394 2.368 2.368 2.368 2.452 2.493 2.584 2.722 2.856 2.987 3.116 3.245 3.373 3.501 3.63 3.759 3.89 4.022 4.156 4.292 4.43 4.571 4.714 4.86 5.009 5.161 5.316 5.474 5.637 5.803 5.972 6.146 6.323 6.505 6.69 6.879 7.072 7.267 7.466 7.667 7.869 8.071 8.273 8.473 8.669 8.859 9.042 9.215 9.376 9.523 9.653 9.765 9.857 9.927 9.974 9.997 10.0 9.999 9.99 9.972 9.947 9.914 9.874 9.827 9.773 9.714 9.649 9.578 9.503 9.423 9.339 9.25 9.159 9.064 8.965 8.865 8.761 8.656 8.548 8.439 8.329 8.217 8.104 7.99 7.876 7.761 7.645 7.529 7.414 7.298 7.183 7.067 6.953 6.838 6.725 6.612 6.499 6.388 6.278 6.168 6.059 5.952 5.846 5.74 5.636 5.534 5.432 5.332 5.233 5.135 5.039 4.944 4.85 4.758 4.667 4.577 4.489 4.403 4.317 4.233 4.151 4.069 3.989 3.911 3.834 3.758 3.683 3.61 3.538 3.467 3.398 3.33 3.263 3.197 3.133 3.07 3.008 2.947 2.887 2.828 2.771 2.714 2.659 2.605 2.551 2.499 2.448 2.398 2.349 2.3 2.253 2.207 2.161 2.117 2.073 2.03 1.989 1.947 1.907 1.868 1.829 1.791 1.754 1.718 1.682 1.647 1.613 1.58 1.547 1.515 1.483 1.452 1.422 1.393 1.364 1.335 1.307 1.28 1.254 1.227 1.202 1.177

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.493" PeakHeight="110.0" Num="3" Error="0.0">
-29.708 12.0 -2.652
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.493" EndFrequency="10.0" PeakHeight="377.35" Num="5" zHalfNm="279.983" Error="1.909">
-216.33 -43.305 6.62 2.841 -0.316
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="16.86" Depth="0.125"/>
<TopsideChapman PeakHeight="377.35" PeakDensity="1240694.8" PeakScaleHeight="73.781" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
