<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 18:20:00.000"
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" >
2026.11.03 (307) 18:20:00</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">
FF202630711031820009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="12.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.977" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="36.322" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="5.100" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="110.000" Name="h`Es" 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="11.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="411.243" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.830" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="291.779" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="219.820" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.883" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="4.300" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="94.790" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="40.237" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="49.264" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="118.890" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.230" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="67">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 11.6 11.65 11.7 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 350.000 350.000 355.000 350.000 350.000 352.500 355.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 365.000 363.333 361.667 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 372.500 375.000 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 396.014 397.145 398.415 399.852 401.490 403.376 405.570 408.155 411.243 415.000 419.668 425.624 433.487 444.347
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 60 0 63 57 0 0 69 0 0 0 0 0 66 69 0 54 0 0 69 72 72 66 63 66 72 66 0 0 69 63 57 63 69 0 57 66 69 66 63 66 63 60 57 57 63 63 66 60 57 63 60 69 63 60 57 57 60 60 66 63 60 51 54 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 -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 1.953125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="17">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
115.000 110.000 110.000 115.000 115.000 115.000 116.000 117.000 118.000 119.000 120.000 120.000 120.000 120.000 120.000 120.000 120.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 60 0 0 63 0 0 54 0 57 54 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
</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" >
89.575 90.0 95.0 100.0 105.0 110.0 113.994 115.0 117.988 120.0 121.982 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 291.779 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.902 2.45 2.738 2.83 2.708 2.708 2.708 2.769 2.83 2.969 3.212 3.473 3.758 4.066 4.395 4.737 5.084 5.428 5.765 6.091 6.407 6.712 7.007 7.294 7.573 7.845 8.113 8.376 8.636 8.893 9.149 9.403 9.658 9.913 10.17 10.428 10.69 10.956 11.226 11.499 11.771 12.021 12.185 12.2 12.195 12.168 12.119 12.05 11.962 11.857 11.736 11.601 11.454 11.295 11.126 10.949 10.764 10.573 10.376 10.175 9.97 9.763 9.553 9.342 9.131 8.92 8.709 8.499 8.29 8.083 7.878 7.676 7.476 7.279 7.085 6.894 6.706 6.522 6.341 6.164 5.991 5.822 5.656 5.494 5.335 5.181 5.03 4.883 4.74 4.6 4.464 4.332 4.203 4.077 3.955 3.836 3.721 3.609 3.5 3.394 3.291 3.191 3.094 2.999 2.908 2.819 2.732 2.649 2.567 2.488 2.412 2.338 2.266 2.196 2.128 2.062 1.999 1.937 1.877 1.819 1.762 1.708 1.655 1.603 1.554 1.505 1.459 1.413 1.37 1.327 1.286 1.246 1.207 1.169 1.133 1.098 1.064 1.03 0.998 0.967 0.937 0.908 0.88 0.852 0.826 0.8 0.775 0.751 0.727 0.705 0.683 0.662 0.641 0.621 0.602 0.583 0.565 0.547 0.53 0.513 0.497 0.482 0.467 0.452 0.438 0.424 0.411 0.398 0.386 0.374 0.362 0.351 0.34 0.329 0.319 0.309 0.299 0.29 0.281 0.272 0.264 0.256 0.248 0.24 0.232 0.225

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.83" PeakHeight="110.0" Num="3" Error="0.0">
-30.047 12.486 -2.864
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.83" EndFrequency="12.2" PeakHeight="291.779" Num="5" zHalfNm="219.82" Error="2.785">
-145.019 -42.462 27.074 -11.637 2.247
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.982" Depth="0.122"/>
<TopsideChapman PeakHeight="291.779" PeakDensity="1846650.1" PeakScaleHeight="49.264" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
