<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: 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" >
2026.11.01 (305) 19:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630511011920009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.572" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.710" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" 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="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" 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="2.403" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="361.175" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.366" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.792" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="142.608" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.429" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.008" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="157.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.630" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="53">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
400.000 400.000 405.000 405.000 405.000 410.000 410.000 410.000 412.500 415.000 415.000 420.000 420.000 420.000 425.000 420.000 425.000 430.000 430.000 430.000 432.500 435.000 435.000 445.000 445.000 445.000 455.000 455.000 455.000 460.000 465.000 465.000 465.000 470.000 475.000 480.000 485.000 485.000 490.000 495.000 500.000 510.000 515.000 520.000 526.264 533.162 540.794 549.286 558.790 569.499 581.658 595.582 611.687
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 66 0 63 0 72 0 69 0 0 66 69 66 66 0 69 63 66 0 63 54 0 63 60 60 60 60 60 57 60 60 60 57 57 60 60 60 57 57 54 54 54 51 51 51 51 51 51 51 42 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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375
</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 95.0 100.0 105.0 110.0 115.0 116.07 120.0 122.141 125.0 128.211 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 361.175 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.613 2.081 2.325 2.403 2.318 2.277 2.277 2.277 2.336 2.403 2.465 2.636 2.807 2.981 3.162 3.351 3.55 3.758 3.977 4.205 4.441 4.684 4.932 5.183 5.436 5.688 5.939 6.188 6.434 6.676 6.916 7.152 7.384 7.614 7.84 8.063 8.283 8.5 8.714 8.926 9.135 9.341 9.545 9.745 9.942 10.135 10.323 10.506 10.682 10.85 11.007 11.152 11.279 11.387 11.47 11.525 11.549 11.55 11.547 11.535 11.513 11.483 11.444 11.397 11.343 11.281 11.213 11.138 11.058 10.972 10.881 10.785 10.685 10.581 10.473 10.361 10.247 10.13 10.01 9.889 9.765 9.639 9.513 9.384 9.255 9.125 8.995 8.864 8.732 8.601 8.47 8.338 8.207 8.077 7.947 7.817 7.688 7.561 7.434 7.308 7.183 7.059 6.936 6.815 6.694 6.575 6.458 6.342 6.227 6.114 6.002 5.891 5.782 5.675 5.569 5.465 5.362 5.261 5.161 5.063 4.966 4.871 4.777 4.685 4.595 4.506 4.418 4.332 4.248 4.164 4.083 4.003 3.924 3.846 3.77 3.696 3.622 3.55 3.48 3.41 3.342 3.276 3.21 3.146 3.083 3.021 2.96 2.901 2.842 2.785 2.729 2.674 2.619 2.566 2.515 2.464 2.414 2.365 2.317 2.27 2.223 2.178 2.134 2.09 2.048 2.006 1.965 1.925 1.886 1.847 1.81 1.773 1.736 1.701 1.666 1.632 1.599 1.566 1.534 1.502 1.472 1.441 1.412 1.383 1.355 1.327

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.403" PeakHeight="110.0" Num="3" Error="0.0">
-29.604 11.855 -2.591
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.403" EndFrequency="11.55" PeakHeight="361.175" Num="5" zHalfNm="257.366" Error="2.954">
-218.591 -24.888 16.5 -8.455 2.47
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.211" Depth="0.126"/>
<TopsideChapman PeakHeight="361.175" PeakDensity="1655117.9" PeakScaleHeight="75.008" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
