<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-07 -038 13:40:00.000"
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="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="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" >
2026.02.07 (038) 13:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" 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">
FF202603802071340009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="9.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.233" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.551" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="295.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="295.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" 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="3.294" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.316" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="410.673" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.418" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.183" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="196.398" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.775" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="108.057" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="247.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.360" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="89">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
295.000 300.000 305.000 310.000 315.000 320.000 325.000 330.000 335.000 340.000 340.000 345.000 350.000 355.000 355.000 355.000 358.333 361.667 365.000 368.333 371.667 375.000 378.333 381.667 385.000 385.000 390.000 392.500 395.000 400.000 400.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 425.000 425.000 435.000 435.000 440.000 445.000 445.000 455.000 460.000 460.000 465.000 470.000 480.000 485.000 490.000 495.000 505.000 510.000 515.000 530.000 535.000 540.000 550.000 550.000 555.000 555.000 565.000 570.000 575.000 575.000 580.000 585.000 590.000 590.000 595.000 595.000 605.000 605.000 610.000 620.000 625.000 630.000 635.000 645.000 655.000 665.000 677.621 692.303 709.596 730.264 755.401
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 0 45 48 51 0 0 54 51 54 54 54 51 0 48 0 51 0 0 0 0 0 0 48 54 51 0 54 45 54 51 45 54 51 57 57 57 60 60 57 57 60 57 54 57 57 57 60 60 60 57 57 57 54 54 54 51 60 60 48 60 60 60 60 57 57 57 57 54 51 57 54 51 48 48 51 51 51 48 51 51 51 48 51 48 0 0 42
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 -2.734375 -1.953125 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 -0.390625 0.390625 0.390625 1.953125 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
</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" >
89.498 90.0 95.0 100.0 105.0 110.0 111.946 113.892 115.0 115.838 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 410.673 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.216 2.851 3.187 3.294 3.172 3.172 3.241 3.294 3.401 3.522 3.639 3.754 3.869 3.985 4.103 4.223 4.345 4.47 4.598 4.728 4.861 4.995 5.131 5.267 5.404 5.54 5.675 5.81 5.942 6.073 6.202 6.329 6.453 6.575 6.696 6.814 6.93 7.044 7.157 7.267 7.376 7.484 7.59 7.695 7.798 7.901 8.002 8.103 8.203 8.301 8.399 8.497 8.593 8.689 8.784 8.878 8.972 9.064 9.154 9.242 9.327 9.408 9.482 9.548 9.6 9.635 9.65 9.65 9.649 9.643 9.634 9.621 9.605 9.585 9.561 9.535 9.505 9.473 9.437 9.399 9.358 9.315 9.269 9.221 9.171 9.119 9.065 9.009 8.951 8.892 8.831 8.768 8.704 8.639 8.573 8.505 8.437 8.367 8.297 8.225 8.153 8.081 8.008 7.934 7.859 7.785 7.71 7.634 7.559 7.483 7.407 7.331 7.254 7.178 7.102 7.026 6.95 6.874 6.798 6.722 6.647 6.572 6.497 6.422 6.348 6.274 6.201 6.127 6.055 5.982 5.911 5.839 5.768 5.698 5.628 5.559 5.49 5.422 5.354 5.287 5.22 5.154 5.089 5.024 4.96 4.896 4.833 4.771 4.709 4.648 4.587 4.527 4.468 4.409 4.351 4.293 4.236 4.18 4.124 4.069 4.015 3.961 3.908 3.855 3.804 3.752 3.701 3.651 3.602 3.553 3.504 3.457 3.409 3.363 3.317 3.271 3.226 3.182 3.138 3.095 3.052 3.01 2.968 2.927 2.887 2.846

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.294" PeakHeight="110.0" Num="3" Error="0.0">
-30.43 13.047 -3.119
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.294" EndFrequency="9.65" PeakHeight="410.673" Num="5" zHalfNm="255.418" Error="4.753">
-258.29 -58.227 31.685 -14.229 4.226
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.838" Depth="0.122"/>
<TopsideChapman PeakHeight="410.673" PeakDensity="1155366.0" PeakScaleHeight="108.057" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
