<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-16 -047 17:00:00.000"
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="18.0">
<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="1 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 80% PACIFIC flags: 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" >
2026.02.16 (047) 17:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.14" 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">
FF202604702161700009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="29" >
<URSI ID="00" Val="10.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.591" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.463" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="3.350" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="3.410" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="110.486" Name="h`E" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="501.815" 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="3.266" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.302" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="351.601" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.951" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.111" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="116.764" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="42.070" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="67.787" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.890" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.070" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 275.000 280.000 285.000 290.000 295.000 300.000 305.000 310.000 315.000 320.000 320.000 325.000 330.000 340.000 340.000 345.000 350.000 350.000 352.500 355.000 355.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 382.000 384.000 386.000 388.000 390.000 390.000 392.500 395.000 395.000 395.000 397.500 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 415.000 420.000 420.000 425.000 425.000 430.000 430.000 435.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 475.000 477.500 480.000 485.000 485.000 490.000 492.470 495.225 498.318 501.815 505.799 510.382 515.708 521.975 529.455 538.539 549.806 564.148
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 0 0 51 51 51 48 51 54 57 51 57 54 54 60 60 60 60 0 60 57 60 60 60 60 63 63 63 66 66 63 63 63 63 66 66 66 66 66 63 63 60 60 63 63 63 60 63 63 0 0 0 0 57 63 51 57 63 66 57 66 69 60 66 57 63 54 60 66 60 63 57 63 57 63 57 63 63 66 63 66 63 63 66 63 66 60 60 57 60 54 60 54 60 48 57 48 54 48 57 54 48 51 51 48 45 42 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 -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 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 0.390625 0.390625 -2.734375 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="2">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.35 3.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
110.486 114.243
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 54
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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" >
89.481 90.0 95.0 100.0 105.0 110.0 112.064 114.127 115.0 116.191 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 351.601 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.294 2.951 3.299 3.41 3.282 3.282 3.336 3.41 3.536 3.684 3.822 3.953 4.082 4.208 4.333 4.458 4.583 4.71 4.837 4.966 5.096 5.229 5.364 5.501 5.64 5.782 5.927 6.075 6.225 6.378 6.534 6.693 6.855 7.02 7.188 7.358 7.532 7.708 7.887 8.069 8.253 8.439 8.628 8.819 9.011 9.205 9.399 9.592 9.784 9.97 10.148 10.31 10.448 10.548 10.597 10.6 10.597 10.585 10.561 10.528 10.486 10.434 10.375 10.308 10.234 10.152 10.065 9.972 9.874 9.771 9.663 9.552 9.437 9.319 9.198 9.074 8.948 8.821 8.691 8.561 8.429 8.297 8.164 8.031 7.897 7.764 7.63 7.497 7.365 7.233 7.102 6.972 6.843 6.715 6.588 6.462 6.338 6.215 6.093 5.973 5.855 5.738 5.622 5.509 5.397 5.286 5.178 5.071 4.965 4.862 4.76 4.66 4.562 4.465 4.37 4.277 4.186 4.096 4.008 3.922 3.837 3.754 3.672 3.592 3.514 3.437 3.362 3.288 3.216 3.145 3.076 3.008 2.941 2.876 2.812 2.75 2.689 2.629 2.57 2.513 2.457 2.402 2.348 2.296 2.244 2.194 2.145 2.097 2.05 2.003 1.958 1.914 1.871 1.829 1.788 1.747 1.708 1.669 1.632 1.595 1.559 1.524 1.489 1.455 1.423 1.39 1.359 1.328 1.298 1.269 1.24 1.212 1.184 1.157 1.131 1.105 1.08 1.056 1.032 1.008 0.985 0.963 0.941 0.92 0.899 0.878

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.41" PeakHeight="110.0" Num="3" Error="0.0">
-30.514 13.172 -3.177
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.41" EndFrequency="10.6" PeakHeight="351.601" Num="5" zHalfNm="258.951" Error="4.591">
-182.953 -67.462 14.5 -0.785 1.29
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.191" Depth="0.128"/>
<TopsideChapman PeakHeight="351.601" PeakDensity="1394044.6" PeakScaleHeight="67.787" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
