<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 16:50:00.000"
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: 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" >
2026.10.16 (289) 16:50:00</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">
FF202628910161650009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.145" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.520" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="365.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="365.000" 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="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="627.032" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.225" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.283" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="446.253" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="282.448" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.726" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="213.370" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="68.685" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="116.699" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="259.470" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
365.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 385.000 385.000 385.000 390.000 390.000 390.000 390.000 395.000 400.000 400.000 400.000 405.000 405.000 410.000 415.000 419.241 423.481 427.722 431.963 436.203 440.444 444.684 448.925 453.166 457.406 461.647 465.888 470.128 474.369 478.610 482.850 487.091 491.331 495.572 499.813 504.053 508.294 512.535 516.775 521.016 525.257 529.497 533.738 537.979 542.219 546.460 550.700 554.941 559.182 563.422 567.663 571.904 576.144 580.385 584.626 588.866 593.107 597.347 601.588 605.829 610.069 614.310 618.551 622.791 627.032 631.273 635.513 639.754 643.994 648.235 655.000 665.000 675.000 690.000 700.000 715.000 730.000 745.000 760.000 780.000 805.000 827.207
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 69 72 63 63 60 69 69 69 72 69 0 63 63 0 69 69 66 72 66 69 69 66 63 60 48 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 1.171875 -0.390625 2.734375 1.171875 0.390625 -0.390625 -2.734375 1.953125 -0.390625 0.390625 -2.734375 1.171875 -2.734375 1.953125 1.953125 -1.953125 2.734375 -0.390625 0.390625 1.171875 -1.953125 1.953125 1.171875 1.171875 2.734375 -0.390625 2.734375 -1.171875 -1.953125 -0.390625 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 2.734375 0.390625 1.953125 -0.390625 1.953125 1.171875 1.953125 -1.953125 -2.734375 0.390625 -2.734375 -1.171875 -2.734375 0.390625 0.390625 -2.734375 1.171875 -0.390625 -1.953125 2.734375 1.953125 1.953125 2.734375 1.953125 -2.734375 -1.953125 1.171875 -1.171875 -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" >
89.509 90.0 95.0 100.0 105.0 110.0 112.237 114.475 115.0 116.712 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 446.253 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.169 2.791 3.12 3.225 3.103 3.103 3.132 3.225 3.319 3.45 3.574 3.694 3.812 3.929 4.046 4.164 4.283 4.403 4.525 4.649 4.774 4.901 5.03 5.16 5.291 5.423 5.555 5.688 5.821 5.954 6.087 6.219 6.35 6.481 6.61 6.739 6.867 6.993 7.118 7.242 7.365 7.487 7.607 7.726 7.845 7.962 8.078 8.193 8.307 8.42 8.532 8.643 8.754 8.863 8.971 9.079 9.185 9.29 9.395 9.497 9.599 9.698 9.796 9.891 9.983 10.071 10.155 10.234 10.305 10.368 10.42 10.461 10.488 10.5 10.5 10.499 10.494 10.486 10.474 10.459 10.441 10.42 10.395 10.367 10.337 10.304 10.268 10.23 10.189 10.146 10.1 10.053 10.003 9.951 9.898 9.842 9.785 9.727 9.667 9.605 9.542 9.478 9.412 9.346 9.278 9.209 9.14 9.069 8.998 8.926 8.853 8.78 8.706 8.631 8.557 8.481 8.406 8.33 8.254 8.177 8.101 8.024 7.947 7.871 7.794 7.717 7.64 7.564 7.487 7.411 7.334 7.258 7.183 7.107 7.032 6.957 6.882 6.808 6.734 6.66 6.587 6.514 6.442 6.37 6.298 6.227 6.156 6.086 6.017 5.948 5.879 5.811 5.743 5.676 5.61 5.544 5.478 5.414 5.349 5.286 5.222 5.16 5.098 5.036 4.975 4.915 4.855 4.796 4.738 4.68 4.622 4.565 4.509 4.453 4.398 4.344 4.29 4.236 4.184 4.131 4.08 4.029 3.978 3.928 3.879 3.83

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.225" PeakHeight="110.0" Num="3" Error="0.0">
-30.377 12.969 -3.083
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.225" EndFrequency="10.5" PeakHeight="446.253" Num="5" zHalfNm="282.448" Error="5.118">
-295.664 -54.822 28.059 -10.765 3.651
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.712" Depth="0.122"/>
<TopsideChapman PeakHeight="446.253" PeakDensity="1367866.0" PeakScaleHeight="116.699" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
