<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 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="15.0">
<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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</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" >
2026.10.15 (288) 14:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.39" 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">
FF202628810151400009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.395" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.629" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="350.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="350.000" 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="10.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="546.567" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.383" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.357" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="384.812" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.359" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.436" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="161.982" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="55.845" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.413" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="211.890" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.270" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="95">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
350.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 366.667 368.333 370.000 373.044 376.089 379.133 382.177 385.221 388.266 391.310 394.354 397.398 400.443 403.487 406.531 409.575 412.620 415.664 418.708 421.753 424.797 427.841 430.885 433.930 436.974 440.018 443.062 446.107 449.151 452.195 455.239 458.284 461.328 464.372 467.417 470.461 473.505 476.549 479.594 482.638 485.682 488.726 491.771 494.815 497.859 500.903 503.948 506.992 510.036 513.081 516.125 519.169 522.213 525.258 528.302 531.346 534.390 537.435 540.479 543.523 546.567 549.612 555.000 560.000 570.000 575.000 585.000 590.000 600.000 615.000 625.000 640.000 655.000 675.468
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 66 66 66 63 66 66 66 66 66 63 66 66 69 69 66 66 69 57 66 0 0 69 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 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 -1.953125 -1.171875 1.171875 2.734375 1.171875 1.171875 2.734375 -1.171875 2.734375 -1.171875 2.734375 -1.171875 -2.734375 -1.171875 0.390625 2.734375 -0.390625 2.734375 0.390625 -1.171875 1.953125 -2.734375 1.953125 1.171875 -2.734375 -1.953125 2.734375 1.953125 0.390625 -1.171875 2.734375 2.734375 0.390625 -1.171875 1.953125 -0.390625 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -2.734375 1.953125 0.390625 -2.734375 -1.953125 2.734375 2.734375 1.171875 -1.171875 0.390625 -1.171875 -1.953125 -0.390625 1.171875 -1.953125 2.734375 -1.953125 -1.953125 -1.953125 -0.390625 2.734375
</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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.579 113.158 114.737 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 384.812 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.276 2.928 3.273 3.383 3.26 3.26 3.383 3.393 3.573 3.734 3.886 4.032 4.175 4.316 4.456 4.596 4.736 4.876 5.017 5.158 5.3 5.443 5.586 5.729 5.873 6.018 6.162 6.307 6.453 6.598 6.743 6.888 7.034 7.179 7.324 7.469 7.614 7.758 7.903 8.047 8.191 8.335 8.478 8.622 8.765 8.908 9.05 9.192 9.334 9.474 9.614 9.751 9.887 10.02 10.148 10.271 10.385 10.488 10.576 10.643 10.686 10.7 10.7 10.697 10.687 10.672 10.65 10.624 10.592 10.555 10.513 10.467 10.416 10.361 10.303 10.24 10.174 10.105 10.033 9.958 9.88 9.799 9.716 9.631 9.544 9.456 9.365 9.273 9.179 9.085 8.989 8.892 8.794 8.696 8.597 8.497 8.397 8.296 8.195 8.094 7.993 7.892 7.791 7.691 7.59 7.49 7.39 7.29 7.191 7.092 6.994 6.896 6.799 6.703 6.607 6.512 6.418 6.325 6.232 6.14 6.05 5.96 5.87 5.782 5.695 5.608 5.523 5.438 5.355 5.272 5.19 5.11 5.03 4.951 4.874 4.797 4.721 4.646 4.573 4.5 4.428 4.357 4.287 4.218 4.15 4.083 4.017 3.952 3.888 3.824 3.762 3.701 3.64 3.58 3.522 3.464 3.407 3.35 3.295 3.241 3.187 3.134 3.082 3.031 2.981 2.931 2.882 2.834 2.787 2.74 2.694 2.649 2.605 2.561 2.518 2.476 2.435 2.394 2.353 2.314 2.275 2.236 2.199 2.162 2.125 2.089

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.383" PeakHeight="110.0" Num="3" Error="0.0">
-30.495 13.143 -3.164
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.383" EndFrequency="10.7" PeakHeight="384.812" Num="5" zHalfNm="258.359" Error="3.74">
-232.136 -58.39 24.023 -5.381 1.809
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.737" Depth="0.123"/>
<TopsideChapman PeakHeight="384.812" PeakDensity="1420471.5" PeakScaleHeight="90.413" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
