<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-16 -289 15:40:00.000"
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" >
2026.10.16 (289) 15:40:00</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">
FF202628910161540009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.172" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.244" 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="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="607.114" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.366" 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="4.350" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="434.557" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="274.041" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.158" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="207.834" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="69.578" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="113.857" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="254.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.420" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="98">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 340.000 340.000 340.000 345.000 345.000 350.000 351.667 353.333 355.000 355.000 360.000 361.875 363.750 365.625 367.500 369.375 371.250 373.125 375.000 380.000 380.000 385.000 385.000 389.038 393.077 397.115 401.154 405.192 409.231 413.269 417.308 421.346 425.384 429.423 433.461 437.500 441.538 445.577 449.615 453.653 457.692 461.730 465.769 469.807 473.846 477.884 481.923 485.961 489.999 494.038 498.076 502.115 506.153 510.192 514.230 518.268 522.307 526.345 530.384 534.422 538.461 542.499 546.538 550.576 554.614 558.653 562.691 566.730 570.768 574.807 578.845 582.883 586.922 590.960 594.999 599.037 603.076 607.114 611.153 615.191 619.229 623.268 628.190 635.000 640.000 645.000 655.000 660.000 670.000 680.000 690.000 705.000 720.000 735.000 760.000 785.000 813.809
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 51 54 54 48 51 0 0 48 0 51 0 0 0 0 0 0 0 54 57 54 60 54 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 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 1.171875 -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 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 -0.390625 1.171875 1.953125 1.953125 2.734375 2.734375 0.390625 -2.734375 -1.953125 -0.390625 -2.734375 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 0.390625 0.390625 -1.953125 -2.734375 1.171875 2.734375 1.953125 1.953125 1.953125 1.171875 -1.953125 -1.171875 -0.390625 2.734375 -1.171875 -1.171875 2.734375 -1.171875 -0.390625 -1.953125 1.171875 0.390625 0.390625 2.734375 -1.953125 -2.734375 -1.953125 1.171875 1.953125 -1.171875 1.171875 -1.953125 -2.734375 -2.734375 -1.953125 -2.734375 -1.953125 -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" >
89.488 90.0 95.0 100.0 105.0 110.0 111.648 113.297 114.945 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 434.557 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.265 2.913 3.256 3.366 3.243 3.243 3.366 3.368 3.508 3.638 3.763 3.886 4.008 4.13 4.253 4.377 4.502 4.63 4.759 4.89 5.024 5.158 5.295 5.432 5.571 5.71 5.849 5.989 6.128 6.267 6.404 6.541 6.677 6.812 6.945 7.077 7.207 7.336 7.464 7.59 7.715 7.839 7.961 8.082 8.202 8.321 8.438 8.555 8.671 8.785 8.899 9.011 9.123 9.234 9.343 9.452 9.56 9.666 9.771 9.874 9.976 10.075 10.171 10.263 10.351 10.433 10.508 10.574 10.628 10.668 10.693 10.7 10.7 10.698 10.691 10.681 10.668 10.65 10.63 10.605 10.578 10.548 10.514 10.478 10.439 10.397 10.353 10.306 10.257 10.205 10.152 10.096 10.039 9.98 9.919 9.856 9.792 9.726 9.659 9.59 9.521 9.45 9.378 9.305 9.232 9.157 9.082 9.006 8.929 8.852 8.774 8.695 8.617 8.538 8.458 8.379 8.299 8.219 8.139 8.059 7.978 7.898 7.818 7.738 7.658 7.578 7.498 7.419 7.339 7.261 7.182 7.103 7.025 6.948 6.87 6.793 6.717 6.641 6.565 6.49 6.415 6.341 6.267 6.194 6.122 6.049 5.978 5.907 5.836 5.766 5.697 5.628 5.56 5.493 5.426 5.36 5.294 5.229 5.164 5.1 5.037 4.974 4.912 4.851 4.79 4.73 4.67 4.611 4.553 4.495 4.438 4.382 4.326 4.271 4.216 4.162 4.109 4.056 4.003 3.952 3.901 3.85 3.8 3.751 3.702 3.654

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.366" PeakHeight="110.0" Num="3" Error="0.0">
-30.483 13.126 -3.155
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.366" EndFrequency="10.7" PeakHeight="434.557" Num="5" zHalfNm="274.041" Error="4.023">
-285.063 -55.268 28.433 -11.342 3.628
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.945" Depth="0.123"/>
<TopsideChapman PeakHeight="434.557" PeakDensity="1420471.5" PeakScaleHeight="113.857" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
