<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 16:00:00.000"
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="15.0">
<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" >
2026.10.15 (288) 16:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202628810151600009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.701" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.854" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="440.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="440.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="480.973" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.338" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.337" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="299.826" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="195.329" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.325" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="129.601" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="32.090" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.883" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="165.940" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.330" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="22">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
440.000 442.500 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 475.000 475.000 477.743 480.973 484.834 489.529 495.364 502.809
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 60 69 69 75 69 72 69 69 66 69 63 69 63 66 69 69 66 66 63 57 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 -1.171875 -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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.763 113.525 115.0 115.288 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 299.826 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.246 2.889 3.229 3.338 3.215 3.215 3.318 3.338 3.525 3.705 3.88 4.058 4.244 4.44 4.645 4.86 5.08 5.302 5.521 5.733 5.937 6.132 6.317 6.494 6.663 6.825 6.981 7.132 7.278 7.421 7.559 7.695 7.829 7.96 8.09 8.219 8.347 8.474 8.601 8.727 8.851 8.971 9.082 9.167 9.2 9.2 9.195 9.182 9.161 9.132 9.095 9.052 9.002 8.946 8.885 8.818 8.746 8.669 8.589 8.504 8.416 8.324 8.23 8.133 8.033 7.932 7.828 7.723 7.617 7.509 7.4 7.291 7.181 7.071 6.96 6.849 6.738 6.628 6.517 6.407 6.298 6.189 6.081 5.973 5.867 5.761 5.656 5.552 5.45 5.348 5.248 5.149 5.051 4.954 4.859 4.764 4.672 4.58 4.49 4.401 4.314 4.228 4.143 4.06 3.978 3.898 3.819 3.741 3.664 3.589 3.516 3.443 3.372 3.302 3.234 3.166 3.1 3.036 2.972 2.91 2.849 2.789 2.73 2.673 2.616 2.561 2.506 2.453 2.401 2.35 2.3 2.251 2.203 2.156 2.11 2.065 2.021 1.977 1.935 1.894 1.853 1.813 1.774 1.736 1.699 1.662 1.626 1.591 1.557 1.523 1.49 1.458 1.427 1.396 1.366 1.336 1.307 1.279 1.251 1.224 1.198 1.172 1.146 1.121 1.097 1.073 1.05 1.027 1.005 0.983 0.962 0.941 0.92 0.9 0.881 0.862 0.843 0.825 0.807 0.789 0.772 0.755 0.739 0.723 0.707 0.692

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.338" PeakHeight="110.0" Num="3" Error="0.0">
-30.463 13.096 -3.141
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.338" EndFrequency="9.2" PeakHeight="299.826" Num="5" zHalfNm="195.329" Error="6.66">
-161.251 -39.739 25.558 -13.002 3.896
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.288" Depth="0.123"/>
<TopsideChapman PeakHeight="299.826" PeakDensity="1050124.1" PeakScaleHeight="70.883" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
