<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-26 -299 19:50:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2o cusp not found, 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" >
2026.10.26 (299) 19:50:00</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">
FF202629910261950009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.649" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.946" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" 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="88" Val="10.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.756" 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="2.091" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="356.393" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="274.419" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.474" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="112.544" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.265" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.349" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="138.980" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.230" 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" >
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 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 291.250 292.500 293.750 295.000 295.000 300.000 300.000 300.000 302.500 305.000 306.875 308.750 310.625 312.500 314.375 316.250 318.125 320.000 321.250 322.500 323.750 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 337.500 340.000 341.667 343.333 345.000 345.000 347.500 350.000 350.000 355.000 356.250 357.500 358.750 360.000 360.000 365.000 365.000 367.500 370.000 372.500 375.000 377.500 380.000 380.000 381.809 383.617 385.426 387.234 389.043 390.851 392.660 394.468 396.277 398.085 399.894 401.702 403.511 405.319 407.128 408.936 410.745 412.553 414.362 416.170 417.979 419.787 421.596 423.404 425.213 427.021 428.830 430.638 432.447 434.255 436.064 437.872 439.681 441.489 443.298 445.106 446.915 448.723 450.532 452.340 454.149 455.957 457.766 459.574 461.383 463.191 465.000 470.000 472.500 475.000 480.000 485.000 487.583 490.756 494.751 499.931 506.918 516.855 532.111 558.520
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 78 0 0 0 0 0 69 0 69 0 78 0 0 0 0 0 0 0 66 0 0 0 69 75 78 75 75 75 72 72 66 72 0 0 75 72 0 66 72 69 0 0 0 72 75 72 72 0 0 0 0 0 63 69 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
</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 -1.171875 -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 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 1.953125 -0.390625 -1.171875 0.390625 0.390625 -0.390625 -0.390625 -1.171875 1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -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 -0.390625 -0.390625 -0.390625 2.734375 -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" >
89.736 90.0 95.0 100.0 105.0 110.0 115.0 117.711 120.0 125.0 125.421 130.0 133.132 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 356.393 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.402 1.811 2.023 2.091 2.037 1.96 1.96 1.96 1.96 2.038 2.091 2.165 2.348 2.521 2.691 2.859 3.029 3.2 3.373 3.549 3.727 3.909 4.092 4.278 4.467 4.657 4.85 5.044 5.24 5.437 5.636 5.836 6.038 6.241 6.445 6.65 6.857 7.065 7.274 7.485 7.697 7.91 8.125 8.341 8.558 8.777 8.996 9.215 9.432 9.647 9.856 10.054 10.234 10.386 10.496 10.547 10.55 10.546 10.529 10.498 10.455 10.401 10.335 10.259 10.174 10.081 9.979 9.87 9.755 9.634 9.508 9.377 9.242 9.103 8.961 8.817 8.67 8.522 8.372 8.222 8.07 7.919 7.767 7.615 7.464 7.314 7.164 7.016 6.868 6.722 6.577 6.434 6.293 6.154 6.016 5.88 5.747 5.615 5.486 5.358 5.233 5.11 4.99 4.871 4.755 4.641 4.53 4.42 4.313 4.208 4.105 4.005 3.906 3.81 3.716 3.624 3.533 3.445 3.359 3.275 3.193 3.113 3.035 2.958 2.884 2.811 2.74 2.67 2.602 2.536 2.472 2.409 2.347 2.287 2.229 2.172 2.116 2.062 2.009 1.958 1.908 1.859 1.811 1.764 1.719 1.675 1.632 1.59 1.549 1.509 1.47 1.432 1.395 1.359 1.324 1.29 1.256 1.224 1.192 1.161 1.131 1.102 1.073 1.046 1.019 0.992 0.966 0.941 0.917 0.893 0.87 0.848 0.826 0.804 0.783 0.763 0.743 0.724 0.705 0.687 0.669 0.652 0.635 0.618 0.602 0.587

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.091" PeakHeight="110.0" Num="3" Error="0.0">
-29.202 11.299 -2.361
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.091" EndFrequency="10.55" PeakHeight="356.393" Num="5" zHalfNm="274.419" Error="1.487">
-191.599 -50.194 22.536 -5.49 1.486
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="23.132" Depth="0.131"/>
<TopsideChapman PeakHeight="356.393" PeakDensity="1380924.4" PeakScaleHeight="59.349" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
