<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 22:10:00.000"
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 33 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Moderate F-spread, F2o cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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" >
2026.10.24 (297) 22:10:00</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">
FF202629710242210009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.408" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="19.509" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="547.390" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="445.638" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="367.435" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.395" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="114.640" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="20.198" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="58.236" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="114.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.930" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="98">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 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 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 360.000 362.500 365.000 365.417 365.833 366.250 366.667 367.083 367.500 367.917 368.333 368.750 369.167 369.583 370.000 375.000 376.250 377.500 378.750 380.000 378.333 376.667 375.000 380.000 382.500 385.000 380.000 385.000 385.000 385.000 386.111 387.222 388.333 389.444 390.556 391.667 392.778 393.889 395.000 397.500 400.000 400.000 405.000 410.000 412.500 415.000 417.500 420.000 430.000 410.000 415.000 430.000 435.000 437.857 440.714 443.571 446.429 449.286 452.143 455.000 455.000 455.000 457.500 460.000 490.000 490.000 485.000 480.000 500.000 500.000 500.000 500.000 500.000 500.000 500.000 500.000 500.000 500.000 500.000 505.000 510.000 515.000 520.000 525.000 530.000 535.000 541.065 547.390 553.992 560.889 568.102 575.653 583.567 591.869 600.590 609.761 619.420
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 63 0 0 0 0 0 0 0 0 0 66 0 0 0 69 0 0 0 69 0 0 0 0 0 0 0 66 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 0 0 0 0 69 0 60 57 60 0 66 0 57 0 66 0 0 51 0 0 0 0 0 0 0 57 0 0 0 0 57 54 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 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 -0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 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 1.171875 -0.390625 -0.390625 -1.953125 -0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 0.390625 1.171875 -1.171875 1.171875 -0.390625 -0.390625 -1.953125 1.171875 0.390625 1.171875 -1.171875 -1.953125 -0.390625 -1.953125 -1.171875 -1.953125 -1.953125 0.390625 -0.390625 -0.390625 -1.953125 -1.953125 1.171875 -1.953125 0.390625 -1.953125 -1.171875 -2.734375 -1.171875 -0.390625 -1.953125 -1.953125 1.953125 -1.171875 -1.171875 1.953125 1.953125
</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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.477 145.0 150.0 155.0 160.0 165.0 170.0 174.954 175.0 180.0 185.0 190.0 195.0 200.0 205.0 207.431 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 445.638 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.342 0.327 0.305 0.273 0.229 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.224 0.248 0.271 0.295 0.319 0.342 0.354 0.392 0.459 0.525 0.593 0.666 0.744 0.831 0.925 1.03 1.145 1.271 1.409 1.559 1.72 1.892 2.075 2.266 2.465 2.67 2.881 3.097 3.318 3.541 3.767 3.996 4.226 4.457 4.689 4.922 5.154 5.386 5.616 5.844 6.07 6.291 6.508 6.719 6.922 7.115 7.298 7.467 7.622 7.758 7.874 7.969 8.039 8.083 8.1 8.1 8.096 8.08 8.054 8.019 7.974 7.92 7.859 7.791 7.715 7.634 7.547 7.455 7.359 7.258 7.154 7.047 6.938 6.826 6.712 6.597 6.48 6.362 6.244 6.126 6.007 5.888 5.77 5.652 5.535 5.418 5.302 5.188 5.074 4.962 4.851 4.742 4.634 4.528 4.423 4.32 4.218 4.119 4.021 3.925 3.83 3.738 3.647 3.558 3.47 3.385 3.301 3.219 3.139 3.061 2.984 2.909 2.836 2.764 2.694 2.626 2.559 2.494 2.43 2.368 2.307 2.248 2.19 2.133 2.078 2.025 1.972 1.921 1.871 1.823 1.775 1.729 1.684 1.64 1.597 1.556 1.515 1.476 1.437 1.399 1.363 1.327 1.292 1.258 1.225 1.193 1.162 1.131 1.101 1.072 1.044 1.017 0.99 0.964 0.939 0.914 0.89 0.866 0.843 0.821 0.8 0.778 0.758 0.738 0.718 0.699 0.681

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="8.1" PeakHeight="445.638" Num="5" zHalfNm="367.435" Error="5.641">
-237.295 -6.739 7.91 -4.828 2.745
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="97.431" Depth="0.154"/>
<TopsideChapman PeakHeight="445.638" PeakDensity="814019.9" PeakScaleHeight="58.236" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
