<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 16:20:00.000"
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" >
2026.10.14 (287) 16:20:00</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">
FF202628710141620009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.444" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.271" 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="11.100" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="522.135" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.302" 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="4.319" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="387.089" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="261.173" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.491" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="165.042" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.245" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="92.294" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="207.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="99">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 325.000 330.000 335.000 337.500 340.000 340.000 340.000 340.000 343.333 346.667 350.000 352.500 355.000 355.000 357.500 360.000 361.667 363.333 365.000 370.000 371.250 372.500 373.750 375.000 377.537 380.074 382.610 385.147 387.684 390.221 392.758 395.295 397.831 400.368 402.905 405.442 407.979 410.515 413.052 415.589 418.126 420.663 423.199 425.736 428.273 430.810 433.347 435.884 438.420 440.957 443.494 446.031 448.568 451.104 453.641 456.178 458.715 461.252 463.789 466.325 468.862 471.399 473.936 476.473 479.009 481.546 484.083 486.620 489.157 491.693 494.230 496.767 499.304 501.841 504.378 506.914 509.451 511.988 514.525 517.062 519.598 522.135 524.672 530.000 535.000 545.000 550.000 560.000 570.000 580.000 590.000 600.000 615.000 635.000 655.000 675.000 704.995
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 60 63 60 51 0 51 60 0 60 0 0 66 0 63 66 0 66 0 0 66 60 0 0 0 69 0 0 57 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 -2.734375 -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 -2.734375 -0.390625 -0.390625 -0.390625 1.171875 -0.390625 -2.734375 -0.390625 -1.953125 -2.734375 -1.953125 -1.953125 2.734375 1.953125 1.953125 -1.953125 0.390625 2.734375 -2.734375 2.734375 1.171875 -1.953125 2.734375 2.734375 1.953125 -1.171875 -1.953125 1.171875 0.390625 -1.953125 2.734375 1.171875 -1.171875 -1.953125 0.390625 -1.171875 1.953125 -0.390625 1.171875 1.953125 1.171875 1.171875 1.953125 1.171875 -1.171875 -2.734375 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" >
89.497 90.0 95.0 100.0 105.0 110.0 111.915 113.829 115.0 115.744 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 387.089 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.221 2.858 3.194 3.302 3.179 3.179 3.254 3.302 3.443 3.603 3.756 3.907 4.054 4.2 4.344 4.488 4.631 4.773 4.916 5.059 5.201 5.344 5.488 5.632 5.776 5.921 6.067 6.213 6.36 6.508 6.657 6.806 6.957 7.108 7.26 7.412 7.565 7.719 7.874 8.029 8.185 8.34 8.497 8.653 8.808 8.964 9.118 9.272 9.423 9.572 9.718 9.86 9.998 10.129 10.252 10.366 10.469 10.558 10.633 10.69 10.729 10.748 10.75 10.749 10.742 10.73 10.712 10.689 10.66 10.627 10.588 10.546 10.498 10.447 10.392 10.333 10.271 10.205 10.136 10.064 9.99 9.913 9.833 9.751 9.667 9.582 9.494 9.405 9.314 9.222 9.129 9.035 8.939 8.843 8.746 8.649 8.551 8.452 8.353 8.254 8.155 8.055 7.956 7.856 7.757 7.658 7.559 7.461 7.362 7.265 7.167 7.07 6.974 6.878 6.783 6.689 6.595 6.502 6.409 6.318 6.227 6.137 6.048 5.96 5.872 5.785 5.7 5.615 5.531 5.448 5.366 5.285 5.204 5.125 5.047 4.969 4.893 4.817 4.743 4.669 4.597 4.525 4.454 4.384 4.315 4.247 4.18 4.114 4.049 3.985 3.921 3.859 3.797 3.736 3.676 3.617 3.559 3.502 3.446 3.39 3.335 3.281 3.228 3.176 3.124 3.073 3.023 2.974 2.925 2.878 2.831 2.784 2.739 2.694 2.65 2.606 2.563 2.521 2.48 2.439 2.399 2.359 2.32 2.282 2.244 2.207

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.302" PeakHeight="110.0" Num="3" Error="0.0">
-30.436 13.056 -3.123
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.302" EndFrequency="10.75" PeakHeight="387.089" Num="5" zHalfNm="261.173" Error="2.273">
-239.729 -46.833 16.251 -1.289 0.255
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.744" Depth="0.123"/>
<TopsideChapman PeakHeight="387.089" PeakDensity="1433777.9" PeakScaleHeight="92.294" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
