<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 19:00:00.000"
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="18.0">
<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" >
2026.10.12 (285) 19:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.38" 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">
FF202628510121900009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.568" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.125" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="486.451" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.599" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="365.263" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.361" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.384" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="142.707" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.410" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.745" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="166.540" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.490" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="106">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.7 5.75 5.8 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 10.8 10.85 10.9 10.95
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 342.419 344.838 347.257 349.677 352.096 354.515 356.934 359.353 361.772 364.191 366.611 369.030 371.449 373.868 376.287 378.706 381.125 383.545 385.964 388.383 390.802 393.221 395.640 398.059 400.479 402.898 405.317 407.736 410.155 412.574 414.994 417.413 419.832 422.251 424.670 427.089 429.508 431.928 434.347 436.766 439.185 441.604 444.023 446.442 448.862 451.281 453.700 456.119 458.538 460.957 463.376 465.796 468.215 470.634 473.053 475.472 477.891 480.310 482.730 486.451 490.525 495.006 499.956 505.000 510.000 520.000 525.000 535.000 545.000 560.000 570.000 590.000 610.000 635.302
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 75 75 72 69 75 78 75 72 69 75 75 72 72 72 75 75 75 72 72 75 75 72 69 72 72 72 69 69 60 72 72 0 0 72 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 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 -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 -1.953125 -0.390625 1.171875 -0.390625 -1.953125 -1.953125 1.171875 1.953125 1.171875 -1.171875 -2.734375 -1.171875 -1.171875 -2.734375 1.953125 -1.953125 -1.953125 1.171875 2.734375 -2.734375 -2.734375 -0.390625 -2.734375 -1.171875 -0.390625 -2.734375 -1.953125 1.953125 1.171875 -1.171875 0.390625 0.390625 -1.171875 0.390625 -2.734375 1.953125 -0.390625 -1.171875 -1.953125 1.171875 1.953125 1.953125 -1.953125 2.734375 -0.390625 -1.171875 -0.390625 2.734375 1.953125 1.953125 -2.734375 0.390625 -2.734375 -1.171875 1.171875 -2.734375 0.390625 -1.953125 1.953125 0.390625 -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" >
89.62 90.0 95.0 100.0 105.0 110.0 115.0 115.092 120.0 120.184 125.0 125.276 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 365.263 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.232 1.745 2.25 2.515 2.599 2.48 2.475 2.475 2.475 2.592 2.599 2.774 2.952 3.126 3.299 3.473 3.649 3.826 4.007 4.19 4.375 4.563 4.753 4.945 5.139 5.334 5.531 5.729 5.927 6.127 6.327 6.527 6.727 6.928 7.128 7.329 7.529 7.728 7.928 8.126 8.324 8.521 8.716 8.91 9.102 9.292 9.479 9.662 9.84 10.013 10.179 10.335 10.48 10.611 10.725 10.819 10.89 10.934 10.95 10.95 10.946 10.933 10.912 10.883 10.846 10.803 10.752 10.695 10.632 10.563 10.489 10.409 10.325 10.237 10.145 10.049 9.95 9.847 9.742 9.634 9.524 9.411 9.297 9.182 9.065 8.946 8.827 8.707 8.586 8.465 8.343 8.222 8.1 7.978 7.856 7.735 7.614 7.494 7.374 7.255 7.137 7.02 6.903 6.787 6.673 6.559 6.447 6.336 6.225 6.117 6.009 5.903 5.798 5.694 5.592 5.491 5.391 5.293 5.196 5.1 5.006 4.913 4.822 4.732 4.644 4.557 4.471 4.386 4.303 4.222 4.142 4.063 3.985 3.909 3.834 3.76 3.687 3.616 3.546 3.478 3.41 3.344 3.279 3.215 3.152 3.091 3.03 2.971 2.913 2.855 2.799 2.744 2.69 2.637 2.585 2.534 2.484 2.435 2.387 2.339 2.293 2.248 2.203 2.159 2.116 2.074 2.033 1.993 1.953 1.914 1.876 1.838 1.802 1.766 1.731 1.696 1.662 1.629 1.596 1.564 1.533 1.502 1.472 1.443 1.414 1.386 1.358

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.599" PeakHeight="110.0" Num="3" Error="0.0">
-29.819 12.16 -2.721
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.599" EndFrequency="10.95" PeakHeight="365.263" Num="5" zHalfNm="260.361" Error="2.376">
-219.128 -33.687 15.731 -4.073 1.17
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="15.276" Depth="0.124"/>
<TopsideChapman PeakHeight="365.263" PeakDensity="1487624.1" PeakScaleHeight="76.745" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
