<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-11 -070 22:10:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, 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" >
2026.03.11 (070) 22:10:00</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">
FF202607003112210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.382" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.078" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="415.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="415.000" 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="0.800" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="586.371" 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="3.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="477.264" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="410.026" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.683" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="101.316" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="21.500" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="50.320" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="113.000" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
415.000 417.500 420.000 422.500 425.000 427.500 430.000 430.000 430.000 430.000 430.000 430.000 430.000 435.000 435.000 435.000 435.000 435.000 435.000 435.000 435.000 435.000 435.000 440.000 440.000 440.000 440.000 440.000 440.000 445.000 450.000 452.500 455.000 455.000 455.000 455.000 455.000 455.000 450.000 450.000 452.500 455.000 455.000 455.000 460.000 470.000 460.000 465.000 470.000 470.000 470.000 470.000 470.000 470.000 475.000 475.000 475.000 475.000 475.000 480.000 480.000 485.000 485.000 490.000 490.000 490.000 490.000 490.000 490.000 490.000 492.500 495.000 495.000 500.000 500.000 510.000 505.000 505.000 508.000 511.000 514.000 517.000 520.000 522.500 525.000 530.000 530.000 533.000 536.000 539.000 542.000 545.000 545.000 547.500 550.000 555.000 555.000 560.000 560.000 565.000 570.000 575.000 575.000 575.000 575.000 580.180 586.371 593.901 603.258 615.196 630.956
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 0 0 69 60 69 48 0 0 66 69 63 57 63 63 69 0 69 72 69 69 72 72 0 0 0 60 63 0 66 0 57 66 69 66 60 66 75 72 66 72 75 75 66 63 69 60 54 69 69 69 75 75 75 69 72 75 69 63 72 63 66 60 60 57 69 75 78 69 66 75 66 60 63 54 57 60 0 0 0 0 63 0 66 57 63 63 63 66 57 60 57 63 63 63 63 57 60 63 60 57 63 51 63 57 60 51 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -1.953125 -2.734375 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -1.953125 -2.734375 -1.953125 -0.390625 1.171875 2.734375 -1.953125 -1.953125 -0.390625 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 1.171875 -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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.923 145.0 150.0 155.0 160.0 165.0 170.0 171.847 175.0 180.0 185.0 190.0 195.0 200.0 202.77 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 477.264 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.324 0.299 0.264 0.212 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.216 0.241 0.266 0.29 0.315 0.34 0.354 0.377 0.432 0.494 0.563 0.637 0.716 0.8 0.888 0.98 1.076 1.175 1.278 1.385 1.495 1.608 1.725 1.845 1.97 2.097 2.229 2.364 2.503 2.647 2.794 2.945 3.101 3.261 3.426 3.595 3.769 3.948 4.132 4.321 4.515 4.715 4.919 5.129 5.344 5.565 5.791 6.021 6.257 6.496 6.739 6.984 7.23 7.475 7.716 7.949 8.17 8.373 8.55 8.693 8.794 8.844 8.85 8.847 8.83 8.798 8.751 8.691 8.618 8.535 8.441 8.339 8.229 8.111 7.987 7.857 7.723 7.585 7.443 7.299 7.152 7.004 6.855 6.705 6.555 6.405 6.255 6.106 5.959 5.812 5.667 5.524 5.382 5.243 5.106 4.971 4.838 4.708 4.58 4.454 4.332 4.212 4.094 3.979 3.867 3.757 3.65 3.546 3.444 3.344 3.248 3.153 3.061 2.972 2.885 2.8 2.718 2.637 2.559 2.483 2.41 2.338 2.268 2.201 2.135 2.071 2.009 1.949 1.89 1.833 1.778 1.724 1.672 1.622 1.573 1.525 1.479 1.434 1.391 1.349 1.308 1.268 1.23 1.192 1.156 1.121 1.087 1.054 1.022 0.991 0.961 0.931 0.903 0.875 0.849 0.823 0.798 0.774 0.75 0.727 0.705 0.683 0.663 0.642 0.623 0.604 0.585 0.567

</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="8.85" PeakHeight="477.264" Num="5" zHalfNm="410.026" Error="2.371">
-247.522 -49.59 29.025 -6.648 0.241
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="92.77" Depth="0.154"/>
<TopsideChapman PeakHeight="477.264" PeakDensity="971743.2" PeakScaleHeight="50.32" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
