<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-05 -064 19:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.03.05 (064) 19:40:00</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">
FF202606403051940009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="13.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.694" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="37.317" 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="14.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="12.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" 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="2.479" 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="367.264" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="287.851" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.692" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="112.375" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="63.095" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="60.913" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="126.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.610" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="211">
<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 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 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7 12.75 12.8 12.85 12.9 12.95 13.0 13.05 13.1 13.15 13.2 13.25 13.3 13.35 13.4 13.45 13.5 13.55 13.6 13.65 13.7 13.75 13.8 13.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 235.000 235.000 235.000 240.000 240.000 240.833 241.667 242.500 243.333 244.167 245.000 245.000 246.250 247.500 248.750 250.000 255.000 255.000 255.000 260.000 260.000 261.667 263.333 265.000 266.667 268.333 270.000 270.000 270.000 275.000 280.000 280.000 280.000 280.000 280.000 280.000 283.333 286.667 290.000 290.000 290.000 290.000 291.667 293.333 295.000 295.000 300.000 301.111 302.222 303.333 304.444 305.556 306.667 307.778 308.889 310.000 310.000 310.000 310.000 311.111 312.222 313.333 314.444 315.556 316.667 317.778 318.889 320.000 320.000 322.500 325.000 325.000 325.000 327.000 329.000 331.000 333.000 335.000 335.000 335.000 335.000 340.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 345.000 346.667 348.333 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 370.000 367.500 365.000 370.000 367.500 365.000 367.500 370.000 370.000 370.000 370.000 370.000 370.000 372.500 375.000 375.000 375.000 375.000 375.000 375.000 377.500 380.000 380.000 380.000 380.000 380.000 380.000 380.000 380.000 381.250 382.500 383.750 385.000 385.000 385.000 385.000 385.000 385.000 385.000 386.667 388.333 390.000 395.000 392.500 390.000 395.000 395.000 395.000 397.500 400.000 400.000 400.000 400.000 405.000 405.000 407.000 409.000 411.000 413.000 415.000 415.000 415.000 410.000 410.000 420.000 420.000 422.500 425.000 425.000 430.000 432.500 435.000 435.000 435.000 435.000 440.000 445.000 445.000 445.000 450.000 455.000 460.000 460.000 465.000 468.598 472.572 476.986 481.917 487.461 493.740 500.910 509.176 518.811 530.183 543.810 560.437 581.177 607.771
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 0 51 54 60 0 0 0 57 0 54 63 0 60 0 60 72 72 69 75 75 0 0 0 0 0 60 0 60 0 0 0 0 63 63 63 0 0 60 63 0 0 0 0 0 69 0 0 0 0 0 0 0 0 0 0 60 0 63 0 0 0 60 0 45 0 0 66 51 0 66 66 54 0 0 0 0 69 69 69 66 0 54 57 63 66 69 72 75 75 72 0 0 69 72 72 69 0 51 69 69 69 66 69 69 72 69 69 66 0 63 72 57 0 69 63 0 69 0 69 66 66 69 0 66 0 63 0 63 63 63 63 0 57 0 60 60 0 57 60 57 0 0 0 57 57 60 60 60 60 54 0 0 57 45 0 54 57 0 57 0 51 54 0 60 54 57 0 0 0 0 45 54 57 60 0 57 60 0 57 60 57 0 54 57 57 54 0 57 0 51 54 57 57 54 0 57 57 57 57 57 57 54 57 54 54 45 45 45 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.644 90.0 95.0 100.0 105.0 110.0 115.0 115.687 120.0 121.374 125.0 127.061 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 367.264 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.23 1.664 2.146 2.399 2.479 2.383 2.354 2.354 2.354 2.434 2.479 2.55 2.675 2.806 2.943 3.085 3.234 3.388 3.547 3.712 3.883 4.059 4.241 4.429 4.624 4.825 5.032 5.247 5.47 5.7 5.939 6.186 6.443 6.709 6.985 7.272 7.57 7.878 8.198 8.53 8.871 9.223 9.584 9.952 10.325 10.7 11.073 11.44 11.796 12.137 12.457 12.751 13.017 13.249 13.446 13.606 13.726 13.807 13.846 13.85 13.847 13.829 13.793 13.742 13.676 13.597 13.504 13.399 13.284 13.158 13.023 12.879 12.727 12.569 12.405 12.235 12.06 11.881 11.698 11.513 11.325 11.134 10.943 10.75 10.556 10.362 10.168 9.974 9.781 9.588 9.397 9.207 9.018 8.831 8.646 8.463 8.282 8.104 7.927 7.753 7.582 7.413 7.247 7.083 6.922 6.764 6.609 6.456 6.306 6.159 6.015 5.874 5.735 5.599 5.466 5.336 5.208 5.084 4.961 4.842 4.725 4.61 4.498 4.389 4.282 4.177 4.075 3.975 3.877 3.782 3.689 3.598 3.509 3.422 3.337 3.254 3.174 3.095 3.018 2.943 2.869 2.798 2.728 2.66 2.593 2.529 2.465 2.404 2.343 2.285 2.227 2.171 2.117 2.064 2.012 1.961 1.912 1.864 1.817 1.771 1.727 1.683 1.641 1.6 1.559 1.52 1.482 1.444 1.408 1.372 1.338 1.304 1.271 1.239 1.208 1.177 1.147 1.118 1.09 1.063 1.036 1.01 0.984 0.959 0.935 0.911 0.888

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.479" PeakHeight="110.0" Num="3" Error="0.0">
-29.692 11.978 -2.642
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.479" EndFrequency="13.85" PeakHeight="367.264" Num="5" zHalfNm="287.851" Error="3.028">
-203.357 -38.022 -0.782 2.89 -0.932
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="17.061" Depth="0.125"/>
<TopsideChapman PeakHeight="367.264" PeakDensity="2379931.8" PeakScaleHeight="60.913" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
