<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 05:10:00.000"
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="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" >
2026.03.10 (069) 05:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606903100510009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.199" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.833" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="8.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="340.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="299.977" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="247.191" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.059" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="75.338" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="15.374" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="39.761" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="66.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="136">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 229.167 228.333 227.500 226.667 225.833 225.000 225.000 225.938 226.875 227.813 228.750 229.688 230.625 231.563 232.500 233.438 234.375 235.313 236.250 237.188 238.125 239.063 240.000 240.000 241.000 242.000 243.000 244.000 245.000 240.000 240.000 240.000 240.000 245.000 243.750 242.500 241.250 240.000 245.000 250.000 248.333 246.667 245.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 255.000 252.500 250.000 250.000 250.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 257.500 260.000 260.000 260.000 260.000 260.000 262.500 265.000 265.000 265.000 266.667 268.333 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 277.500 280.000 280.000 280.000 280.000 280.000 285.000 285.000 285.833 286.667 287.500 288.333 289.167 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 300.000 300.000 305.000 305.000 310.000 310.000 315.000 315.000 315.000 315.000 320.000 320.000 325.000 330.000 330.000 335.000 335.000 340.000 340.000 350.000 352.776 356.153 360.350 365.705 372.776 382.545 396.918 420.157 464.121
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 72 0 0 0 0 0 78 63 0 0 72 0 0 0 0 0 0 0 0 0 0 0 0 60 72 0 0 0 0 60 78 78 0 78 60 0 0 0 63 60 54 0 0 69 66 0 0 72 72 0 72 75 60 0 75 0 69 69 0 66 57 69 69 63 60 0 66 66 69 0 66 0 0 0 72 0 0 69 72 0 57 60 0 66 66 0 54 63 69 69 72 60 69 45 0 57 0 0 69 72 75 66 72 72 63 69 75 78 75 78 66 69 57 66 72 69 72 72 72 66 75 69 75 72 69 69 69 66 66 69 69 69 63 63 57
</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 2.734375 -1.171875 -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 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 -2.734375 -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 -1.953125 -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 -1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="155">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 136.833 140.0 145.0 150.0 155.0 160.0 163.667 165.0 170.0 175.0 180.0 185.0 190.0 190.5 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 299.977 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.35 0.337 0.314 0.279 0.226 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.208 0.236 0.265 0.294 0.322 0.351 0.354 0.454 0.619 0.872 1.256 1.807 2.502 3.262 4.012 4.711 5.348 5.921 6.431 6.882 7.277 7.619 7.912 8.156 8.354 8.506 8.614 8.679 8.7 8.7 8.687 8.649 8.588 8.508 8.409 8.293 8.164 8.022 7.87 7.709 7.541 7.366 7.188 7.005 6.82 6.634 6.448 6.261 6.075 5.891 5.708 5.528 5.351 5.177 5.006 4.839 4.675 4.515 4.36 4.208 4.06 3.917 3.777 3.642 3.511 3.384 3.26 3.141 3.026 2.914 2.807 2.703 2.602 2.505 2.411 2.321 2.234 2.15 2.069 1.991 1.915 1.843 1.773 1.706 1.641 1.578 1.518 1.46 1.405 1.351 1.299 1.25 1.202 1.156 1.112 1.069 1.028 0.989 0.951 0.914 0.879 0.845 0.813 0.782 0.752 0.723 0.695 0.668 0.643 0.618 0.594 0.571 0.549 0.528 0.508 0.488 0.469 0.451 0.434 0.417 0.401 0.386 0.371 0.357 0.343 0.33 0.317 0.305 0.293 0.282 0.271 0.26 0.25 0.241 0.231 0.223 0.214 0.206

</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="8.7" PeakHeight="299.977" Num="5" zHalfNm="247.191" Error="0.852">
-132.453 33.475 -11.949 1.71 -0.26
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="299.977" PeakDensity="939081.9" PeakScaleHeight="39.761" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
