<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 22:30:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, Unidentified traces above foF2</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) 22:30:00</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">
FF202606903102230009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.293" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.457" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" 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="1.400" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="600.000" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="494.528" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="413.373" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.426" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="120.290" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="21.137" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="60.853" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="127.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.590" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="99">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
425.000 425.000 425.000 425.000 425.000 430.000 430.000 430.000 430.000 430.000 430.000 430.000 430.000 430.000 435.000 435.000 436.250 437.500 438.750 440.000 435.000 440.000 440.000 442.000 444.000 446.000 448.000 450.000 455.000 460.000 457.500 455.000 460.000 460.000 460.000 460.000 462.500 465.000 465.000 465.000 465.000 467.500 470.000 475.000 475.000 475.000 475.000 475.000 480.000 485.000 490.000 490.000 490.000 495.000 495.000 495.000 500.000 505.000 505.000 505.000 507.500 510.000 510.000 512.500 515.000 515.000 516.000 517.000 518.000 519.000 520.000 525.000 527.500 530.000 530.000 535.000 537.500 540.000 545.000 545.000 565.000 567.500 570.000 572.500 575.000 578.750 582.500 586.250 590.000 595.000 600.000 600.000 608.255 617.449 627.752 639.376 652.593 667.755 685.325
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 0 0 57 54 0 0 51 0 0 57 54 54 51 51 0 0 0 51 51 60 57 0 0 57 0 57 51 57 0 54 54 0 0 60 0 60 57 51 57 0 51 0 0 0 54 54 0 0 0 60 69 63 72 69 66 54 63 66 0 60 69 0 57 66 0 0 0 0 60 63 0 63 66 66 0 63 60 66 51 0 0 0 54 0 0 0 57 0 51 57 51 51 54 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -0.390625 -0.390625 0.390625 -0.390625 -1.171875 -1.171875 1.171875 -1.171875 -1.171875 -1.171875 0.390625 0.390625 0.390625 -1.171875 1.171875 -1.171875 -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 -1.171875 0.390625 0.390625 -0.390625 1.171875 0.390625 1.953125 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 -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 -1.171875 2.734375 1.171875 -0.390625 1.953125 1.953125 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 2.734375 1.953125 -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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.324 145.0 150.0 155.0 160.0 165.0 170.0 174.647 175.0 180.0 185.0 190.0 195.0 200.0 205.0 206.971 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 494.528 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.342 0.327 0.304 0.273 0.227 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.202 0.226 0.249 0.273 0.297 0.321 0.345 0.354 0.382 0.432 0.485 0.544 0.606 0.673 0.744 0.819 0.899 0.982 1.07 1.161 1.257 1.356 1.46 1.567 1.679 1.795 1.914 2.038 2.165 2.297 2.433 2.573 2.717 2.865 3.018 3.174 3.335 3.5 3.669 3.842 4.018 4.199 4.384 4.572 4.763 4.957 5.155 5.354 5.556 5.758 5.961 6.164 6.366 6.565 6.76 6.949 7.132 7.304 7.465 7.611 7.74 7.85 7.937 8.001 8.039 8.05 8.05 8.044 8.028 8.002 7.967 7.925 7.874 7.816 7.752 7.681 7.604 7.523 7.437 7.346 7.252 7.155 7.054 6.951 6.846 6.739 6.63 6.519 6.408 6.296 6.184 6.071 5.958 5.845 5.733 5.62 5.509 5.398 5.288 5.179 5.07 4.963 4.858 4.753 4.65 4.548 4.448 4.349 4.251 4.156 4.061 3.969 3.878 3.788 3.701 3.614 3.53 3.447 3.366 3.286 3.208 3.131 3.057 2.983 2.912 2.841 2.773 2.705 2.64 2.575 2.513 2.451 2.391 2.333 2.275 2.219 2.165 2.111 2.059 2.008 1.958 1.91 1.862 1.816 1.771 1.727 1.684 1.642 1.601 1.561 1.522 1.484 1.446 1.41 1.375 1.34 1.307 1.274 1.242 1.211 1.18 1.15 1.122 1.093 1.066 1.039 1.013 0.987

</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="8.05" PeakHeight="494.528" Num="5" zHalfNm="413.373" Error="2.377">
-270.334 -32.032 18.678 -4.2 0.331
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="96.971" Depth="0.154"/>
<TopsideChapman PeakHeight="494.528" PeakDensity="804001.25" PeakScaleHeight="60.853" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
