<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-04 -063 10:00:00.000"
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="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" >
2026.03.04 (063) 10:00:00</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">
FF202606303041000009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.023" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.242" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" 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="7.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="345.000" 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="2.095" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="299.545" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.158" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.079" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="108.318" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="21.760" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.044" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="102.780" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.480" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="111">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 240.000 245.000 245.000 245.000 245.000 245.000 250.000 247.500 245.000 245.000 245.000 245.000 245.000 250.000 250.000 250.000 250.000 250.000 251.250 252.500 253.750 255.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 265.000 265.000 265.000 266.364 267.727 269.091 270.455 271.818 273.182 274.545 275.909 277.273 278.636 280.000 281.667 283.333 285.000 280.000 285.000 290.000 291.667 293.333 295.000 295.000 295.000 295.000 295.000 300.000 300.000 300.000 303.333 306.667 310.000 310.000 315.000 315.000 315.000 320.000 320.000 325.000 325.000 330.000 330.000 335.000 335.000 340.000 340.000 345.000 345.000 350.000 355.000 360.000 365.000 365.000 370.000 375.000 380.000 390.000 395.000 405.000 415.000 425.000 440.000 461.580 491.485 535.679
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 57 60 63 0 63 66 66 66 66 69 66 66 66 66 63 66 63 63 0 0 60 54 0 0 54 69 69 66 66 69 0 0 0 66 66 0 66 0 66 0 63 60 57 66 66 66 0 0 0 0 0 0 0 0 0 0 69 0 0 66 69 54 60 0 0 57 60 63 66 66 66 66 69 0 0 57 66 54 63 69 63 69 63 69 63 66 60 66 60 66 66 69 69 66 63 60 66 66 66 63 66 66 66 63 63 63 63 63 51
</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 0.390625 0.390625 1.171875 1.171875
</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" >
89.735 90.0 95.0 100.0 105.0 110.0 115.0 117.688 120.0 125.0 125.376 130.0 133.064 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 299.545 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.223 1.405 1.814 2.027 2.095 2.041 1.965 1.965 1.965 1.965 2.043 2.095 2.153 2.292 2.427 2.562 2.701 2.846 2.999 3.163 3.341 3.535 3.748 3.983 4.241 4.522 4.822 5.137 5.456 5.771 6.076 6.365 6.636 6.888 7.12 7.332 7.525 7.697 7.85 7.983 8.096 8.188 8.26 8.311 8.341 8.35 8.35 8.343 8.325 8.297 8.259 8.212 8.157 8.094 8.023 7.946 7.863 7.774 7.68 7.582 7.48 7.374 7.265 7.154 7.04 6.924 6.807 6.688 6.569 6.449 6.328 6.208 6.087 5.966 5.846 5.727 5.608 5.491 5.374 5.258 5.144 5.031 4.919 4.809 4.7 4.593 4.488 4.384 4.282 4.182 4.084 3.987 3.892 3.799 3.708 3.618 3.53 3.444 3.36 3.278 3.197 3.118 3.041 2.966 2.892 2.82 2.749 2.68 2.613 2.547 2.483 2.42 2.359 2.299 2.241 2.184 2.128 2.074 2.021 1.969 1.919 1.87 1.822 1.775 1.729 1.685 1.641 1.599 1.558 1.518 1.479 1.44 1.403 1.367 1.332 1.297 1.264 1.231 1.199 1.168 1.138 1.108 1.079 1.051 1.024 0.997 0.971 0.946 0.922 0.898 0.874 0.852 0.829 0.808 0.787 0.766 0.746 0.727 0.708 0.69 0.672 0.654 0.637 0.62 0.604 0.588 0.573 0.558 0.544 0.529 0.516 0.502 0.489 0.476 0.464 0.452 0.44 0.429 0.417 0.406 0.396 0.386 0.375 0.366 0.356 0.347 0.338

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.095" PeakHeight="110.0" Num="3" Error="0.0">
-29.208 11.307 -2.364
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.095" EndFrequency="8.35" PeakHeight="299.545" Num="5" zHalfNm="222.158" Error="2.813">
-159.001 -1.306 -8.111 0.44 1.497
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="23.064" Depth="0.13"/>
<TopsideChapman PeakHeight="299.545" PeakDensity="865043.44" PeakScaleHeight="59.044" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
