<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 18:10:00.000"
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 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) 18:10:00</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">
FF202630711031810009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.834" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="35.992" 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="13.000" 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="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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="12.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="427.473" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.884" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="319.496" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="231.558" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.868" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="120.091" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.290" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="64.035" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="137.310" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="76">
<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 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 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 350.000 352.500 355.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 356.667 358.333 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 370.000 372.500 375.000 375.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 417.652 420.582 423.837 427.473 431.562 436.195 441.486 447.589 454.703 463.104 473.176 485.472 500.821 520.519 546.722 583.288
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 54 0 0 0 0 72 0 0 60 69 69 0 0 0 66 69 0 66 66 69 72 69 72 0 0 72 66 0 69 0 69 60 0 60 69 54 60 69 63 63 54 69 69 60 60 63 57 66 69 66 69 60 63 60 66 63 66 60 63 57 54 63 66 60 57 57 0 54 0 63 60 0 0 45 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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.171875
</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" >
89.566 90.0 95.0 100.0 105.0 110.0 113.743 115.0 117.486 120.0 121.229 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 319.496 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.938 2.497 2.79 2.884 2.762 2.762 2.762 2.844 2.884 3.04 3.261 3.498 3.749 4.013 4.287 4.57 4.858 5.151 5.445 5.74 6.034 6.327 6.619 6.91 7.198 7.485 7.77 8.054 8.335 8.615 8.894 9.171 9.446 9.719 9.991 10.259 10.525 10.787 11.044 11.295 11.538 11.77 11.987 12.186 12.361 12.506 12.615 12.681 12.7 12.7 12.691 12.668 12.631 12.581 12.52 12.447 12.364 12.271 12.168 12.058 11.94 11.814 11.683 11.545 11.403 11.255 11.104 10.949 10.791 10.63 10.466 10.301 10.135 9.967 9.799 9.63 9.46 9.291 9.122 8.953 8.786 8.619 8.453 8.288 8.125 7.963 7.803 7.645 7.488 7.334 7.181 7.03 6.882 6.736 6.591 6.449 6.31 6.172 6.037 5.905 5.774 5.646 5.52 5.397 5.276 5.157 5.04 4.926 4.814 4.704 4.597 4.491 4.388 4.287 4.188 4.091 3.996 3.904 3.813 3.724 3.637 3.552 3.469 3.387 3.308 3.23 3.154 3.08 3.007 2.936 2.867 2.799 2.733 2.668 2.604 2.543 2.482 2.423 2.366 2.309 2.254 2.201 2.148 2.097 2.047 1.998 1.95 1.904 1.858 1.814 1.77 1.728 1.686 1.646 1.607 1.568 1.53 1.494 1.458 1.423 1.389 1.355 1.323 1.291 1.26 1.23 1.2 1.172 1.143 1.116 1.089 1.063 1.037 1.012 0.988 0.964 0.941 0.918 0.896 0.875 0.854 0.833 0.813 0.794 0.774 0.756

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.884" PeakHeight="110.0" Num="3" Error="0.0">
-30.096 12.557 -2.895
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.884" EndFrequency="12.7" PeakHeight="319.496" Num="5" zHalfNm="231.558" Error="2.403">
-183.496 -24.363 13.951 -4.961 0.602
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.229" Depth="0.122"/>
<TopsideChapman PeakHeight="319.496" PeakDensity="2001116.6" PeakScaleHeight="64.035" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
