<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-10 -069 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" >
2026.03.10 (069) 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">
FF202606903102210009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.279" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.059" 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="9.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="395.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="395.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="620.550" 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="2.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="491.514" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="412.753" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.683" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="116.798" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="24.518" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.083" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="123.480" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.570" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="126">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
395.000 395.000 395.000 395.000 395.000 395.000 395.000 397.500 400.000 402.500 405.000 405.000 405.000 405.000 405.000 405.000 405.000 406.875 408.750 410.625 412.500 414.375 416.250 418.125 420.000 420.000 420.000 420.000 420.000 425.000 425.000 425.000 425.000 425.000 425.000 430.000 430.000 430.000 430.000 430.000 435.000 435.000 440.000 440.000 440.000 440.000 441.000 442.000 443.000 444.000 445.000 445.000 448.333 451.667 455.000 455.000 455.000 460.000 460.000 460.000 465.000 462.500 460.000 462.500 465.000 465.000 470.000 470.000 475.000 475.000 480.000 480.000 482.500 485.000 485.000 485.000 487.500 490.000 492.500 495.000 495.000 495.000 495.000 495.000 500.000 500.000 505.000 505.000 507.500 510.000 515.000 515.000 520.000 525.000 527.500 530.000 532.500 535.000 540.000 542.500 545.000 545.000 545.000 555.000 555.000 555.000 560.000 565.000 565.000 570.000 575.000 580.000 580.000 590.000 595.000 600.000 600.000 605.000 609.453 614.580 620.550 627.587 636.006 646.258 659.014 675.322
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 0 0 0 0 66 0 0 0 63 72 72 66 57 0 63 0 0 0 0 0 0 0 54 0 60 60 57 51 0 0 51 75 78 75 72 72 75 69 69 75 60 57 60 66 0 0 0 0 63 69 0 51 57 63 66 51 63 72 57 60 75 66 75 72 78 75 69 75 63 63 0 66 63 69 63 69 0 69 66 72 63 69 72 75 69 78 66 72 72 72 63 66 0 0 0 60 51 0 66 66 66 60 66 66 69 66 69 78 78 69 72 69 75 66 63 69 72 72 69 69 72 66 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 -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 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 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 -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 -1.171875 -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 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 1.953125 -0.390625 -1.171875 -1.171875 -1.171875 -2.734375 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -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 0.390625 1.171875
</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 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 140.893 145.0 150.0 155.0 160.0 165.0 170.0 171.785 175.0 180.0 185.0 190.0 195.0 200.0 202.678 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 491.514 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 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 0.263 0.212 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.216 0.241 0.266 0.291 0.316 0.341 0.354 0.381 0.438 0.495 0.554 0.616 0.68 0.748 0.819 0.894 0.973 1.056 1.143 1.235 1.332 1.433 1.539 1.65 1.767 1.888 2.015 2.147 2.284 2.426 2.574 2.727 2.886 3.05 3.22 3.394 3.574 3.76 3.95 4.146 4.346 4.551 4.761 4.975 5.193 5.414 5.639 5.866 6.096 6.326 6.557 6.787 7.015 7.239 7.457 7.669 7.87 8.059 8.233 8.389 8.524 8.634 8.718 8.774 8.799 8.8 8.797 8.783 8.757 8.721 8.676 8.621 8.557 8.486 8.407 8.322 8.231 8.134 8.033 7.927 7.817 7.703 7.587 7.468 7.347 7.224 7.1 6.974 6.848 6.721 6.594 6.467 6.34 6.214 6.088 5.962 5.838 5.714 5.592 5.471 5.351 5.233 5.117 5.001 4.888 4.776 4.666 4.558 4.452 4.347 4.245 4.144 4.045 3.948 3.853 3.76 3.669 3.579 3.492 3.406 3.322 3.24 3.16 3.081 3.004 2.929 2.856 2.784 2.714 2.646 2.579 2.514 2.45 2.388 2.327 2.268 2.211 2.154 2.099 2.045 1.993 1.942 1.892 1.844 1.796 1.75 1.705 1.661 1.618 1.577 1.536 1.496 1.458 1.42 1.383 1.348 1.313 1.279 1.246 1.213 1.182 1.151 1.121 1.092 1.064 1.036 1.009 0.983

</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="8.8" PeakHeight="491.514" Num="5" zHalfNm="412.753" Error="3.925">
-269.047 -35.001 17.073 -2.897 1.036
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="92.678" Depth="0.154"/>
<TopsideChapman PeakHeight="491.514" PeakDensity="960794.06" PeakScaleHeight="59.083" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
