<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-12 -071 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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.03.12 (071) 22:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.17" 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">
FF202607103122210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.411" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="19.048" 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="8.350" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="562.129" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<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="472.485" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="407.601" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.683" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="97.591" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="16.637" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="48.799" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="111.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="102">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
418.333 420.000 421.667 423.333 425.000 420.000 415.000 417.500 420.000 422.500 425.000 430.000 430.000 431.667 433.333 435.000 435.000 435.833 436.667 437.500 438.333 439.167 440.000 440.714 441.429 442.143 442.857 443.571 444.286 445.000 445.000 445.000 445.000 445.000 450.000 451.000 452.000 453.000 454.000 455.000 460.000 460.000 460.000 460.000 460.000 462.500 465.000 465.833 466.667 467.500 470.625 473.750 476.875 480.000 480.000 480.000 480.000 480.000 480.000 480.000 490.000 490.000 490.000 490.000 493.333 496.667 500.000 500.000 502.000 504.000 506.000 508.000 510.000 510.000 510.000 505.000 515.000 515.000 515.000 516.875 518.750 520.625 522.500 524.375 526.250 528.125 530.000 530.000 535.000 540.000 545.000 547.506 550.373 553.684 557.552 562.129 567.631 574.369 582.813 593.705 608.288 628.823
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 0 0 0 54 0 0 0 0 60 60 0 0 54 0 0 0 0 0 0 57 0 0 63 0 0 0 60 0 0 0 0 63 0 0 0 0 60 57 48 60 54 60 0 63 0 0 0 0 0 0 57 54 63 66 69 69 0 69 66 63 57 0 0 66 63 0 0 0 0 63 69 66 57 60 72 69 0 0 0 0 0 66 0 66 63 0 66 72 0 69 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 -0.390625 -1.171875 2.734375 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -0.390625 -1.953125 -1.953125 -1.953125 -0.390625 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -2.734375 -1.953125 -1.953125 -1.953125 -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 -1.171875 -2.734375 -2.734375 -2.734375 -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 -0.390625 -1.953125 2.734375
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.954 145.0 150.0 155.0 160.0 165.0 170.0 171.908 175.0 180.0 185.0 190.0 195.0 200.0 202.862 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 472.485 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.341 0.324 0.3 0.264 0.212 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.215 0.24 0.265 0.29 0.315 0.34 0.354 0.374 0.426 0.486 0.551 0.621 0.695 0.772 0.853 0.936 1.021 1.109 1.2 1.294 1.39 1.489 1.59 1.695 1.803 1.914 2.029 2.147 2.268 2.394 2.523 2.657 2.795 2.937 3.083 3.235 3.391 3.553 3.719 3.892 4.069 4.252 4.441 4.636 4.836 5.043 5.254 5.471 5.693 5.919 6.148 6.378 6.607 6.834 7.053 7.261 7.451 7.617 7.751 7.845 7.894 7.9 7.898 7.882 7.852 7.808 7.752 7.684 7.606 7.519 7.423 7.319 7.209 7.094 6.973 6.848 6.719 6.588 6.454 6.318 6.181 6.044 5.905 5.767 5.629 5.492 5.356 5.221 5.087 4.955 4.824 4.696 4.569 4.444 4.322 4.202 4.085 3.969 3.857 3.746 3.638 3.533 3.43 3.33 3.232 3.136 3.043 2.953 2.865 2.779 2.695 2.614 2.535 2.458 2.383 2.311 2.24 2.171 2.105 2.04 1.978 1.917 1.857 1.8 1.744 1.69 1.638 1.587 1.538 1.49 1.444 1.399 1.355 1.313 1.272 1.232 1.194 1.156 1.12 1.085 1.051 1.018 0.986 0.956 0.926 0.897 0.868 0.841 0.815 0.789 0.764 0.74 0.717 0.695 0.673 0.652 0.631 0.611 0.592 0.573 0.555 0.538 0.521 0.505 0.489 0.473 0.458 0.444

</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="7.9" PeakHeight="472.485" Num="5" zHalfNm="407.601" Error="2.287">
-239.259 -52.337 26.668 -3.959 -0.736
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="92.862" Depth="0.154"/>
<TopsideChapman PeakHeight="472.485" PeakDensity="774317.6" PeakScaleHeight="48.799" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
