<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-30 -303 20:40:00.000"
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" >
2026.10.30 (303) 20:40:00</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">
FF202630310302040009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.481" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.066" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="480.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="480.000" 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="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.221" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="397.531" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="300.632" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.318" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="138.159" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="35.802" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.728" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="143.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.850" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="25">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
480.000 480.000 485.000 490.000 490.000 495.000 495.000 500.000 505.000 505.000 510.000 510.000 520.000 525.000 525.000 530.000 535.000 541.863 549.759 558.939 569.745 582.649 598.330 617.792 642.589
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 63 57 51 0 57 63 63 60 66 66 63 60 60 63 63 63 60 54 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -1.953125 2.734375 2.734375 2.734375 -2.734375 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.087 95.0 100.0 105.0 110.0 115.0 120.0 123.661 125.0 130.0 135.0 137.322 140.0 145.0 150.0 150.983 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 397.531 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.814 1.058 1.182 1.221 1.2 1.134 1.055 1.055 1.055 1.055 1.055 1.088 1.148 1.209 1.221 1.315 1.43 1.546 1.667 1.792 1.924 2.064 2.212 2.368 2.534 2.708 2.892 3.083 3.283 3.489 3.7 3.917 4.137 4.36 4.585 4.812 5.039 5.266 5.493 5.719 5.945 6.169 6.392 6.613 6.831 7.048 7.262 7.472 7.679 7.882 8.08 8.273 8.459 8.638 8.808 8.968 9.116 9.252 9.373 9.477 9.563 9.629 9.674 9.697 9.7 9.699 9.69 9.672 9.647 9.613 9.572 9.525 9.47 9.41 9.344 9.272 9.195 9.114 9.029 8.94 8.847 8.751 8.651 8.55 8.445 8.339 8.231 8.121 8.01 7.898 7.784 7.67 7.556 7.44 7.325 7.21 7.094 6.979 6.864 6.75 6.635 6.522 6.409 6.297 6.186 6.076 5.967 5.859 5.752 5.646 5.541 5.438 5.336 5.235 5.135 5.037 4.94 4.844 4.75 4.658 4.566 4.476 4.388 4.301 4.215 4.131 4.048 3.967 3.887 3.808 3.731 3.655 3.58 3.507 3.435 3.365 3.295 3.227 3.161 3.095 3.031 2.968 2.906 2.846 2.787 2.728 2.671 2.615 2.56 2.507 2.454 2.402 2.352 2.302 2.254 2.206 2.159 2.114 2.069 2.025 1.982 1.94 1.899 1.858 1.819 1.78 1.742 1.705 1.669 1.633 1.598 1.564 1.531 1.498 1.466 1.435 1.404 1.374 1.345 1.316 1.288 1.26 1.233 1.207 1.181 1.156

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.221" PeakHeight="110.0" Num="3" Error="0.0">
-27.352 8.95 -1.511
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.221" EndFrequency="9.7" PeakHeight="397.531" Num="5" zHalfNm="300.632" Error="3.199">
-238.908 -13.346 8.657 -4.92 1.969
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.983" Depth="0.166"/>
<TopsideChapman PeakHeight="397.531" PeakDensity="1167369.8" PeakScaleHeight="71.728" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
