<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 20:50:00.000"
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: 50% PACIFIC flags: F2o cusp not found, 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" >
2026.10.14 (287) 20:50:00</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">
FF202628710142050009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.329" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.921" 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="11.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="567.194" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.027" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="440.675" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="338.418" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.245" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="147.528" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.858" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.174" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="153.720" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="93">
<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 10.4 10.45 10.5 10.55 10.6 10.65 10.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 355.000 357.222 359.444 361.667 363.889 366.111 368.333 370.556 372.778 375.000 377.869 380.737 383.606 386.474 389.343 392.211 395.080 397.948 400.817 403.686 406.554 409.423 412.291 415.160 418.028 420.897 423.766 426.634 429.503 432.371 435.240 438.108 440.977 443.845 446.714 449.583 452.451 455.320 458.188 461.057 463.925 466.794 469.662 472.531 475.400 478.268 481.137 484.005 486.874 489.742 492.611 495.480 498.348 501.217 504.085 506.954 509.822 512.691 515.559 518.428 521.297 524.165 527.034 529.902 532.771 535.639 538.508 541.376 544.245 547.114 549.982 552.851 555.719 558.588 561.456 564.325 567.194 571.193 575.561 580.350 585.000 590.000 600.000 605.000 615.000 625.000 635.000 645.000 660.000 675.000 697.957
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 75 0 0 72 0 0 72 0 0 0 0 51 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 45 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" >
-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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.953125 -0.390625 -2.734375 1.171875 -1.171875 2.734375 2.734375 -1.171875 -2.734375 -0.390625 -1.953125 2.734375 1.953125 1.171875 -0.390625 2.734375 1.171875 -0.390625 -1.171875 -1.171875 0.390625 -0.390625 -1.953125 1.953125 -1.171875 1.953125 -1.953125 -2.734375 -1.171875 1.953125 -2.734375 -2.734375 -1.171875 -1.171875 -1.171875 -1.953125 0.390625 1.171875 -2.734375 2.734375 -1.953125 -2.734375 1.171875 -1.171875 1.171875 -1.171875 -1.953125 2.734375 2.734375 0.390625 2.734375 2.734375 -1.953125 -0.390625 -1.171875 1.953125 2.734375 -2.734375 -0.390625 2.734375 -1.171875 1.953125 -1.171875 -1.953125 0.390625 2.734375 2.734375 -1.953125 -1.171875 -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" >
90.244 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.398 130.0 135.0 140.0 142.796 145.0 150.0 155.0 159.194 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 440.675 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.684 0.89 0.994 1.027 1.01 0.956 0.861 0.825 0.825 0.825 0.825 0.825 0.852 0.914 0.975 1.027 1.044 1.147 1.248 1.349 1.454 1.564 1.68 1.804 1.935 2.075 2.224 2.382 2.551 2.728 2.914 3.107 3.308 3.513 3.724 3.938 4.154 4.372 4.591 4.811 5.031 5.251 5.471 5.69 5.909 6.128 6.345 6.562 6.778 6.993 7.208 7.421 7.633 7.844 8.053 8.261 8.466 8.669 8.869 9.065 9.258 9.445 9.625 9.798 9.962 10.116 10.256 10.381 10.489 10.576 10.642 10.683 10.7 10.7 10.697 10.684 10.664 10.635 10.598 10.554 10.503 10.446 10.382 10.313 10.238 10.158 10.074 9.985 9.892 9.796 9.696 9.593 9.487 9.378 9.268 9.155 9.041 8.925 8.807 8.689 8.569 8.449 8.328 8.207 8.086 7.964 7.843 7.722 7.6 7.48 7.36 7.24 7.121 7.003 6.885 6.769 6.653 6.539 6.426 6.313 6.202 6.092 5.983 5.876 5.77 5.665 5.562 5.46 5.359 5.26 5.162 5.065 4.97 4.877 4.784 4.693 4.604 4.516 4.43 4.344 4.261 4.178 4.097 4.018 3.939 3.862 3.787 3.713 3.64 3.568 3.498 3.429 3.361 3.294 3.229 3.165 3.102 3.04 2.979 2.92 2.861 2.804 2.748 2.692 2.638 2.585 2.533 2.482 2.432 2.383 2.335 2.288 2.241 2.196 2.152 2.108 2.065 2.023 1.982 1.942 1.902 1.864 1.826 1.789 1.752 1.717

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.027" PeakHeight="110.0" Num="3" Error="0.0">
-26.622 8.125 -1.259
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.027" EndFrequency="10.7" PeakHeight="440.675" Num="5" zHalfNm="338.418" Error="4.431">
-270.638 -21.269 16.337 -9.344 3.433
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="49.194" Depth="0.202"/>
<TopsideChapman PeakHeight="440.675" PeakDensity="1420471.5" PeakScaleHeight="75.174" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
