<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 20:20:00.000"
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) 20:20:00</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">
FF202628810152020009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.478" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.770" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="516.945" 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="1.657" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="395.727" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="283.267" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.415" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="158.512" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.427" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.243" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="161.500" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="85">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 320.000 320.000 320.000 320.000 321.250 322.500 323.750 325.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 345.000 350.000 345.000 345.000 348.371 351.743 355.114 358.486 361.857 365.229 368.600 371.972 375.343 378.715 382.086 385.458 388.829 392.201 395.572 398.943 402.315 405.686 409.058 412.429 415.801 419.172 422.544 425.915 429.287 432.658 436.030 439.401 442.772 446.144 449.515 452.887 456.258 459.630 463.001 466.373 469.744 473.116 476.487 479.859 483.230 486.602 489.973 493.344 496.716 500.087 503.459 506.830 510.202 513.573 516.945 525.000 530.000 540.000 550.000 555.000 570.000 580.000 595.000 610.000 625.000 645.000 665.000 692.317
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 75 0 0 78 0 0 0 0 78 78 75 78 78 75 0 0 0 63 78 75 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 2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 0.390625 -1.171875 -2.734375 -1.953125 -0.390625 -2.734375 -0.390625 1.953125 -0.390625 -1.953125 -2.734375 -0.390625 2.734375 -2.734375 1.171875 -1.953125 2.734375 1.953125 0.390625 -2.734375 -1.171875 2.734375 1.171875 -1.171875 -0.390625 0.390625 -0.390625 -1.953125 1.171875 0.390625 -0.390625 -1.171875 -1.953125 2.734375 1.171875 2.734375 2.734375 -0.390625 1.171875 -2.734375 -2.734375 -1.953125 -0.390625 -1.171875 2.734375 2.734375 -1.953125 1.171875 -1.953125 1.171875 -2.734375 2.734375 1.171875 1.171875
</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" >
89.871 90.0 95.0 100.0 105.0 110.0 115.0 120.0 120.222 125.0 130.0 130.443 135.0 140.0 140.665 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 395.727 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.211 1.109 1.435 1.604 1.657 1.624 1.522 1.516 1.516 1.516 1.516 1.579 1.648 1.657 1.775 1.908 2.04 2.176 2.316 2.463 2.618 2.781 2.954 3.136 3.328 3.53 3.741 3.961 4.187 4.419 4.654 4.892 5.132 5.372 5.61 5.848 6.083 6.315 6.545 6.771 6.994 7.213 7.428 7.639 7.847 8.049 8.247 8.441 8.628 8.811 8.987 9.156 9.318 9.472 9.618 9.753 9.879 9.993 10.095 10.184 10.258 10.318 10.361 10.389 10.4 10.4 10.397 10.388 10.371 10.348 10.319 10.284 10.243 10.197 10.145 10.089 10.028 9.963 9.894 9.821 9.745 9.665 9.582 9.496 9.408 9.317 9.224 9.129 9.032 8.934 8.834 8.733 8.63 8.527 8.423 8.318 8.212 8.106 8.0 7.894 7.787 7.68 7.574 7.467 7.361 7.255 7.15 7.045 6.94 6.836 6.733 6.631 6.529 6.428 6.327 6.228 6.13 6.032 5.936 5.84 5.745 5.652 5.559 5.468 5.377 5.288 5.2 5.113 5.027 4.942 4.858 4.775 4.694 4.614 4.534 4.456 4.379 4.303 4.229 4.155 4.082 4.011 3.94 3.871 3.803 3.736 3.67 3.605 3.541 3.478 3.416 3.355 3.295 3.236 3.178 3.121 3.065 3.009 2.955 2.902 2.85 2.798 2.747 2.698 2.649 2.601 2.553 2.507 2.461 2.416 2.372 2.329 2.287 2.245 2.204 2.163 2.124 2.085 2.047 2.009 1.972 1.936 1.901 1.866 1.831 1.798 1.765

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.657" PeakHeight="110.0" Num="3" Error="0.0">
-28.469 10.324 -1.984
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.657" EndFrequency="10.4" PeakHeight="395.727" Num="5" zHalfNm="283.267" Error="4.306">
-253.893 -3.728 5.01 -4.666 2.215
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="30.665" Depth="0.141"/>
<TopsideChapman PeakHeight="395.727" PeakDensity="1341935.5" PeakScaleHeight="83.243" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
