<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 21:10:00.000"
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: 65% PACIFIC flags: Multiple candidates for F2x cusp, F2 cusps do not match</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" >
2026.03.09 (068) 21:10:00</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">
FF202606803092110009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.493" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.415" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="535.000" 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="1.110" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="403.593" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="321.375" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.369" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="119.155" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="44.518" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.086" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="127.760" 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="184">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7 11.75 11.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 280.000 280.000 280.000 280.000 280.000 285.000 285.000 285.000 287.500 290.000 290.000 287.500 285.000 285.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 290.000 295.000 295.000 295.000 295.000 295.000 296.364 297.727 299.091 300.455 301.818 303.182 304.545 305.909 307.273 308.636 310.000 310.000 310.000 312.500 315.000 315.000 315.000 315.000 316.667 318.333 320.000 320.000 320.000 320.000 320.000 322.500 325.000 330.000 330.000 330.000 330.000 330.000 331.667 333.333 335.000 340.000 341.000 342.000 343.000 344.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 352.500 355.000 357.500 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 370.000 370.000 372.500 375.000 375.000 377.500 380.000 382.500 385.000 385.000 385.000 385.000 390.000 392.500 395.000 395.000 400.000 400.000 400.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 415.000 416.667 418.333 420.000 422.500 425.000 425.000 430.000 430.000 430.000 432.500 435.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 450.000 450.000 455.000 455.000 456.667 458.333 460.000 460.000 462.500 465.000 465.000 470.000 470.000 472.500 475.000 475.000 480.000 485.000 485.000 487.500 490.000 490.000 492.500 495.000 500.000 500.000 502.500 505.000 510.000 511.667 513.333 515.000 520.000 520.000 522.500 525.000 530.000 530.000 531.667 533.333 535.000 540.387 546.281 552.758 559.907 567.840 576.692 586.635 597.881
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 57 0 0 0 60 54 60 63 63 0 0 0 0 66 66 72 0 72 75 75 72 72 75 63 57 72 0 66 63 66 0 0 0 0 0 0 0 0 0 0 0 48 54 60 63 66 51 69 0 0 66 66 0 0 60 0 66 57 0 0 0 69 0 0 69 57 0 66 0 0 63 66 0 0 69 66 69 0 0 0 57 63 69 69 60 66 69 69 63 69 0 63 69 0 66 0 60 66 69 69 66 0 60 66 54 63 66 69 69 69 72 66 69 57 63 66 0 0 66 57 66 69 60 63 63 57 63 66 66 63 66 60 63 54 57 63 54 60 0 0 60 63 0 60 63 60 60 54 57 60 57 48 51 0 51 54 48 54 48 51 0 51 45 0 0 48 42 48 0 48 45 45 0 0 42 42 42 45 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -1.171875 -2.734375 -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 -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 -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 -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 2.734375 -1.171875 -0.390625 -1.953125 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 -2.734375 -0.390625 -1.171875 1.953125 -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 -1.953125 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 1.953125 -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 2.734375 2.734375 0.390625 -2.734375 -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" >
90.168 95.0 100.0 105.0 110.0 115.0 120.0 125.0 125.028 130.0 135.0 140.0 140.055 145.0 150.0 155.0 155.083 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 403.593 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.74 0.962 1.075 1.11 1.091 1.033 0.929 0.928 0.928 0.928 0.928 0.928 0.988 1.048 1.109 1.11 1.222 1.329 1.436 1.545 1.661 1.784 1.917 2.062 2.221 2.395 2.587 2.797 3.025 3.27 3.528 3.796 4.07 4.348 4.626 4.902 5.177 5.448 5.717 5.982 6.245 6.505 6.762 7.018 7.272 7.524 7.775 8.026 8.275 8.524 8.773 9.022 9.271 9.519 9.767 10.014 10.26 10.503 10.742 10.973 11.193 11.395 11.569 11.703 11.782 11.8 11.799 11.787 11.759 11.716 11.66 11.592 11.511 11.42 11.318 11.208 11.089 10.962 10.829 10.689 10.543 10.393 10.239 10.081 9.92 9.756 9.59 9.422 9.253 9.084 8.913 8.743 8.573 8.403 8.233 8.065 7.897 7.731 7.567 7.404 7.243 7.083 6.926 6.771 6.618 6.467 6.319 6.172 6.029 5.888 5.749 5.613 5.479 5.348 5.22 5.094 4.97 4.849 4.731 4.615 4.501 4.39 4.281 4.175 4.071 3.97 3.87 3.773 3.679 3.586 3.496 3.407 3.321 3.237 3.155 3.075 2.996 2.92 2.845 2.773 2.702 2.633 2.565 2.499 2.435 2.373 2.312 2.252 2.194 2.138 2.082 2.029 1.976 1.925 1.875 1.827 1.78 1.734 1.689 1.645 1.602 1.561 1.52 1.481 1.442 1.405 1.369 1.333 1.298 1.265 1.232 1.2 1.169 1.138 1.109 1.08 1.052 1.024 0.998 0.972 0.946 0.922 0.898 0.874 0.852 0.829

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.11" PeakHeight="110.0" Num="3" Error="0.0">
-26.963 8.501 -1.37
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.11" EndFrequency="11.8" PeakHeight="403.593" Num="5" zHalfNm="321.375" Error="5.209">
-224.899 -37.641 23.743 -15.287 5.574
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="45.083" Depth="0.182"/>
<TopsideChapman PeakHeight="403.593" PeakDensity="1727543.4" PeakScaleHeight="59.086" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
