<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-10 -283 14:00:00.000"
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" >
2026.10.10 (283) 14:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628310101400009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.680" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="30.554" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="465.000" 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="3.385" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.358" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="349.608" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="254.808" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.436" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="125.217" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="50.764" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.854" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="168.000" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.220" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="112">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 345.000 345.000 345.000 345.000 345.000 347.500 350.000 350.000 350.000 350.000 350.000 351.643 353.286 354.929 356.571 358.214 359.857 361.500 363.143 364.786 366.429 368.071 369.714 371.357 373.000 374.643 376.286 377.929 379.571 381.214 382.857 384.500 386.143 387.786 389.429 391.071 392.714 394.357 396.000 397.643 399.286 400.929 402.571 404.214 405.857 407.500 409.143 410.786 412.429 414.071 415.714 417.357 419.000 420.643 422.286 423.929 425.571 427.214 428.857 430.500 432.143 433.786 435.429 437.071 438.714 440.357 442.000 443.643 445.286 446.929 448.571 450.214 451.857 453.500 455.143 456.786 458.429 460.071 461.714 463.357 465.000 475.000 480.000 485.124 491.172 498.420 507.264 518.297 532.445 551.246 577.445 616.480
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 63 63 60 63 63 63 60 60 66 69 63 63 66 69 72 69 66 63 63 69 69 66 63 60 0 69 0 66 66 66 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 57 57 57 57 57 57 57 54 54 54 51 48
</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 -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 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -1.953125 2.734375 -1.171875 1.953125 0.390625 -1.171875 1.953125 1.171875 -2.734375 1.953125 1.953125 1.171875 -0.390625 1.953125 -2.734375 1.953125 -0.390625 -1.953125 2.734375 0.390625 -1.953125 1.953125 2.734375 1.953125 -0.390625 -1.953125 -2.734375 1.171875 -0.390625 -1.953125 1.953125 0.390625 1.171875 -0.390625 -1.171875 1.953125 -1.953125 -1.953125 -0.390625 0.390625 1.171875 -2.734375 -1.171875 -1.171875 1.171875 0.390625 1.953125 -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
</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" >
89.485 90.0 95.0 100.0 105.0 110.0 111.57 113.14 114.71 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 349.608 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.277 2.929 3.275 3.385 3.262 3.262 3.385 3.397 3.602 3.791 3.969 4.138 4.301 4.46 4.616 4.769 4.921 5.071 5.221 5.372 5.522 5.674 5.826 5.981 6.137 6.295 6.456 6.62 6.786 6.957 7.131 7.309 7.492 7.679 7.871 8.069 8.272 8.48 8.694 8.913 9.137 9.364 9.593 9.823 10.051 10.272 10.485 10.684 10.865 11.024 11.158 11.264 11.341 11.386 11.4 11.4 11.394 11.377 11.351 11.316 11.271 11.219 11.158 11.09 11.015 10.934 10.847 10.754 10.656 10.553 10.446 10.335 10.22 10.102 9.981 9.857 9.731 9.603 9.474 9.342 9.21 9.076 8.942 8.807 8.672 8.537 8.401 8.266 8.131 7.996 7.862 7.729 7.596 7.464 7.333 7.204 7.075 6.948 6.821 6.696 6.573 6.451 6.33 6.211 6.094 5.977 5.863 5.75 5.639 5.529 5.421 5.315 5.21 5.107 5.006 4.906 4.808 4.712 4.617 4.524 4.432 4.343 4.254 4.168 4.082 3.999 3.917 3.836 3.757 3.68 3.603 3.529 3.456 3.384 3.313 3.244 3.177 3.11 3.045 2.981 2.919 2.858 2.797 2.739 2.681 2.624 2.569 2.515 2.462 2.41 2.359 2.309 2.26 2.212 2.165 2.119 2.074 2.03 1.987 1.944 1.903 1.863 1.823 1.784 1.746 1.709 1.672 1.637 1.602 1.567 1.534 1.501 1.469 1.438 1.407 1.377 1.347 1.318 1.29 1.263 1.236 1.209 1.183 1.158 1.133 1.109

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.385" PeakHeight="110.0" Num="3" Error="0.0">
-30.496 13.146 -3.165
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.385" EndFrequency="11.4" PeakHeight="349.608" Num="5" zHalfNm="254.808" Error="2.959">
-198.253 -49.144 8.682 5.089 -1.272
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.71" Depth="0.123"/>
<TopsideChapman PeakHeight="349.608" PeakDensity="1612407.0" PeakScaleHeight="71.854" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
