<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 13:10:00.000"
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="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) 13:10:00</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">
FF202628810151310009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.475" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.614" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="521.266" 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="3.311" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.324" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="361.165" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.321" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.158" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="151.592" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="48.615" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.224" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="197.610" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="86">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 340.000 343.237 346.474 349.711 352.948 356.184 359.421 362.658 365.895 369.132 372.369 375.606 378.843 382.080 385.317 388.553 391.790 395.027 398.264 401.501 404.738 407.975 411.212 414.449 417.686 420.922 424.159 427.396 430.633 433.870 437.107 440.344 443.581 446.818 450.054 453.291 456.528 459.765 463.002 466.239 469.476 472.713 475.950 479.187 482.423 485.660 488.897 492.134 495.371 498.608 501.845 505.082 508.319 511.556 514.792 518.029 521.266 524.853 528.868 533.391 540.000 545.000 550.000 560.000 570.000 580.000 595.000 610.000 634.168
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 72 69 72 72 69 72 69 72 72 72 72 72 72 72 72 72 69 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
</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 -1.171875 1.171875 -1.171875 2.734375 0.390625 0.390625 -1.953125 2.734375 -2.734375 1.171875 -0.390625 -0.390625 2.734375 2.734375 1.171875 0.390625 1.953125 -1.953125 2.734375 1.171875 0.390625 -1.953125 -1.171875 1.171875 1.953125 0.390625 -2.734375 1.171875 1.953125 1.953125 0.390625 0.390625 0.390625 -2.734375 1.953125 1.171875 2.734375 -1.171875 -1.953125 -0.390625 -2.734375 -1.953125 0.390625 -2.734375 0.390625 2.734375 -0.390625 -1.953125 2.734375 0.390625 1.953125 -0.390625 -2.734375 2.734375 0.390625 0.390625 -1.171875 -0.390625 1.953125 0.390625 2.734375 -2.734375 -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" >
89.495 90.0 95.0 100.0 105.0 110.0 111.877 113.755 115.0 115.632 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 361.165 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.227 2.865 3.203 3.311 3.188 3.188 3.27 3.311 3.481 3.657 3.823 3.983 4.142 4.298 4.454 4.61 4.767 4.923 5.08 5.237 5.394 5.552 5.709 5.865 6.022 6.178 6.333 6.487 6.641 6.794 6.947 7.098 7.249 7.399 7.548 7.697 7.845 7.992 8.139 8.285 8.431 8.576 8.721 8.865 9.009 9.152 9.293 9.434 9.572 9.708 9.839 9.964 10.08 10.182 10.266 10.323 10.349 10.35 10.348 10.339 10.324 10.302 10.274 10.24 10.201 10.156 10.107 10.052 9.993 9.93 9.863 9.792 9.718 9.64 9.559 9.476 9.39 9.301 9.21 9.118 9.023 8.927 8.829 8.73 8.63 8.528 8.426 8.323 8.22 8.116 8.011 7.907 7.802 7.697 7.592 7.487 7.383 7.278 7.174 7.071 6.968 6.865 6.763 6.662 6.561 6.461 6.362 6.264 6.167 6.07 5.974 5.88 5.786 5.693 5.601 5.511 5.421 5.332 5.245 5.158 5.073 4.988 4.905 4.823 4.742 4.661 4.583 4.505 4.428 4.352 4.278 4.204 4.132 4.061 3.99 3.921 3.853 3.786 3.72 3.655 3.591 3.528 3.466 3.405 3.345 3.285 3.227 3.17 3.114 3.059 3.004 2.951 2.898 2.846 2.795 2.745 2.696 2.648 2.6 2.554 2.508 2.463 2.418 2.375 2.332 2.29 2.249 2.208 2.168 2.129 2.09 2.053 2.015 1.979 1.943 1.908 1.873 1.839 1.806 1.773 1.741 1.709 1.678 1.647 1.617 1.588

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.311" PeakHeight="110.0" Num="3" Error="0.0">
-30.443 13.066 -3.128
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.311" EndFrequency="10.35" PeakHeight="361.165" Num="5" zHalfNm="242.321" Error="3.324">
-213.041 -52.172 24.291 -6.434 1.823
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.632" Depth="0.123"/>
<TopsideChapman PeakHeight="361.165" PeakDensity="1329063.2" PeakScaleHeight="84.224" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
