<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-15 -046 08:40:00.000"
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: 100%</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" >
2026.02.15 (046) 08:40:00</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">
FF202604602150840009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="5.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.924" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.667" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="375.000" 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="0.608" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="1.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="1.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="340.513" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.656" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.662" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="109.254" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.817" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.166" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="93.820" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.780" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="78">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.85 1.9 1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 256.250 257.500 258.750 260.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 265.000 266.000 267.000 268.000 269.000 270.000 271.000 272.000 273.000 274.000 275.000 280.000 280.000 281.000 282.000 283.000 284.000 285.000 286.000 287.000 288.000 289.000 290.000 295.000 295.000 295.000 295.000 295.000 300.000 300.000 302.500 305.000 305.000 305.000 310.000 310.000 310.000 315.000 315.000 320.000 320.000 325.000 325.000 330.000 330.000 335.000 335.000 340.000 345.000 350.000 355.000 360.000 360.000 365.000 370.000 375.000 385.000 390.000 400.000 412.500 425.000 435.000 456.580 486.485 530.679 602.621
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 0 63 60 0 69 69 0 0 72 69 0 0 0 0 0 0 0 0 0 63 54 57 0 0 0 0 0 0 0 51 0 66 54 0 0 63 63 54 54 0 54 57 57 57 57 57 63 69 66 66 63 69 69 72 66 63 0 0 60 54 51 57 0 54 54 60 63 72 0 63 69 72 51 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 -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 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
</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" >
91.073 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 136.411 140.0 145.0 150.0 155.0 160.0 162.821 165.0 170.0 175.0 180.0 185.0 189.232 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 340.513 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.403 0.527 0.589 0.608 0.599 0.573 0.527 0.454 0.335 0.285 0.285 0.285 0.285 0.285 0.285 0.285 0.312 0.373 0.434 0.495 0.556 0.608 0.619 0.706 0.82 0.963 1.13 1.316 1.519 1.741 1.984 2.252 2.544 2.859 3.186 3.512 3.821 4.103 4.355 4.577 4.77 4.939 5.085 5.211 5.32 5.413 5.491 5.555 5.607 5.647 5.676 5.693 5.7 5.7 5.697 5.686 5.668 5.644 5.613 5.576 5.534 5.487 5.436 5.38 5.32 5.257 5.191 5.122 5.05 4.976 4.901 4.824 4.745 4.665 4.585 4.504 4.422 4.34 4.258 4.175 4.093 4.012 3.93 3.849 3.769 3.689 3.61 3.532 3.455 3.378 3.303 3.229 3.156 3.083 3.012 2.943 2.874 2.807 2.74 2.675 2.612 2.549 2.488 2.428 2.369 2.311 2.254 2.199 2.145 2.092 2.04 1.99 1.94 1.892 1.844 1.798 1.753 1.709 1.666 1.624 1.583 1.543 1.504 1.465 1.428 1.392 1.356 1.322 1.288 1.255 1.223 1.191 1.161 1.131 1.102 1.074 1.046 1.019 0.993 0.967 0.942 0.918 0.894 0.871 0.849 0.827 0.805 0.784 0.764 0.744 0.725 0.706 0.688 0.67 0.653 0.636 0.619 0.603 0.588 0.572 0.557 0.543 0.529 0.515 0.502 0.489 0.476 0.464 0.452 0.44 0.428 0.417 0.406 0.396 0.386 0.376 0.366 0.356 0.347 0.338 0.329 0.321 0.312 0.304 0.296 0.288

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.608" PeakHeight="110.0" Num="3" Error="0.0">
-23.761 5.432 -0.598
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.608" EndFrequency="5.7" PeakHeight="340.513" Num="5" zHalfNm="263.656" Error="2.2">
-176.258 39.138 -18.622 6.587 -2.126
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="79.232" Depth="0.323"/>
<TopsideChapman PeakHeight="340.513" PeakDensity="403101.75" PeakScaleHeight="59.166" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
