<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-03 -062 22:00:00.000"
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: 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" >
2026.03.03 (062) 22:00:00</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">
FF202606203032200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.370" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.568" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="370.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="370.000" 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="0.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="592.203" 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="0.374" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="466.308" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="394.687" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.810" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="106.331" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="23.877" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="53.698" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="113.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.540" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="132">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
375.000 370.000 372.000 374.000 376.000 378.000 380.000 381.250 382.500 383.750 385.000 380.000 382.000 384.000 386.000 388.000 390.000 385.000 385.000 385.000 385.000 388.000 391.000 394.000 397.000 400.000 395.000 400.000 400.833 401.667 402.500 403.333 404.167 405.000 405.625 406.250 406.875 407.500 408.125 408.750 409.375 410.000 410.000 410.000 410.000 415.000 415.000 420.000 420.000 422.500 425.000 425.000 426.667 428.333 430.000 430.000 430.000 430.000 435.000 435.000 436.667 438.333 440.000 440.000 441.250 442.500 443.750 445.000 445.000 446.667 448.333 450.000 451.667 453.333 455.000 455.000 457.500 460.000 462.500 465.000 465.000 465.000 467.500 470.000 470.000 475.000 475.000 475.000 480.000 480.000 485.000 485.000 485.000 490.000 491.250 492.500 493.750 495.000 500.000 500.000 502.500 505.000 505.000 510.000 510.000 512.500 515.000 520.000 520.000 525.000 530.000 530.000 535.000 535.000 540.000 540.000 545.000 550.000 550.000 555.000 560.000 560.000 565.000 569.251 573.994 579.319 585.339 592.203 600.099 609.279 620.084 632.989
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 63 0 0 0 0 69 0 0 0 0 63 0 0 0 0 63 69 69 72 66 0 0 0 0 48 48 0 0 0 0 0 0 60 0 0 0 0 0 0 0 0 0 0 0 60 0 54 54 0 51 54 0 0 54 0 0 0 48 0 0 0 54 60 0 48 0 57 60 0 60 0 0 0 57 57 0 0 0 54 57 57 0 63 69 57 66 66 60 60 54 57 66 57 0 0 0 63 60 66 0 57 57 51 54 0 48 54 60 57 51 60 57 66 63 66 63 63 63 63 60 60 63 63 63 60 54 48 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 -1.171875 -1.171875 -1.171875 -0.390625 1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 1.953125 -1.171875 -1.171875 -2.734375 0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 0.390625 1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 0.390625 2.734375 -0.390625 -1.953125
</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" >
93.1 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.707 140.0 145.0 150.0 155.0 160.0 165.0 169.413 170.0 175.0 180.0 185.0 190.0 195.0 199.12 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 466.308 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.247 0.324 0.362 0.374 0.37 0.359 0.338 0.308 0.263 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.203 0.233 0.262 0.291 0.321 0.35 0.374 0.386 0.453 0.518 0.584 0.652 0.723 0.798 0.877 0.961 1.049 1.142 1.241 1.344 1.454 1.569 1.69 1.817 1.951 2.091 2.237 2.389 2.548 2.713 2.885 3.064 3.249 3.44 3.638 3.842 4.052 4.269 4.491 4.72 4.954 5.193 5.437 5.685 5.938 6.193 6.451 6.71 6.968 7.225 7.478 7.725 7.963 8.189 8.4 8.59 8.757 8.894 8.999 9.068 9.099 9.1 9.096 9.078 9.045 9.0 8.943 8.875 8.797 8.709 8.613 8.51 8.399 8.283 8.161 8.034 7.904 7.77 7.633 7.493 7.352 7.21 7.066 6.921 6.777 6.632 6.488 6.344 6.201 6.059 5.919 5.78 5.642 5.506 5.372 5.24 5.11 4.982 4.857 4.733 4.612 4.493 4.376 4.262 4.15 4.04 3.933 3.828 3.726 3.626 3.528 3.433 3.339 3.248 3.16 3.073 2.989 2.906 2.826 2.748 2.672 2.598 2.525 2.455 2.386 2.32 2.255 2.191 2.13 2.07 2.012 1.955 1.9 1.846 1.794 1.743 1.694 1.646 1.599 1.554 1.51 1.467 1.425 1.385 1.345 1.307 1.27 1.234 1.199 1.164 1.131 1.099 1.068 1.037 1.008 0.979 0.951 0.924 0.897 0.872 0.847 0.822 0.799 0.776 0.754 0.732 0.711 0.691 0.671

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.374" PeakHeight="110.0" Num="3" Error="0.0">
-19.461 2.736 -0.175
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.374" EndFrequency="9.1" PeakHeight="466.308" Num="5" zHalfNm="394.687" Error="3.711">
-246.631 -35.503 16.545 -2.773 1.174
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="89.12" Depth="0.174"/>
<TopsideChapman PeakHeight="466.308" PeakDensity="1027419.4" PeakScaleHeight="53.698" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
