<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-12 -285 18:40:00.000"
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="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) 18:40:00</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">
FF202628510121840009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.518" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.946" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="320.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="320.000" 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="10.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="491.217" 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="2.739" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="382.753" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="265.710" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.262" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="57.167" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="87.076" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="182.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.620" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="108">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.0 11.05 11.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 335.000 335.000 335.000 335.000 340.000 340.000 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 352.315 354.630 356.945 359.260 361.575 363.890 366.205 368.520 370.835 373.150 375.465 377.780 380.095 382.410 384.725 387.040 389.355 391.671 393.986 396.301 398.616 400.931 403.246 405.561 407.876 410.191 412.506 414.821 417.136 419.451 421.766 424.081 426.396 428.711 431.026 433.341 435.656 437.971 440.286 442.601 444.916 447.231 449.546 451.861 454.176 456.491 458.806 461.121 463.436 465.751 468.066 470.381 472.696 475.012 477.327 479.642 481.957 484.272 486.587 488.902 491.217 493.532 498.095 503.074 510.000 515.000 520.000 530.000 535.000 545.000 555.000 570.000 585.000 600.000 620.000 640.000 670.000 705.130
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 75 75 75 72 69 0 72 72 75 72 75 69 75 75 72 69 72 72 66 69 72 72 72 72 72 69 0 0 0 0 0 0 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
</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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -1.953125 -0.390625 1.953125 -0.390625 2.734375 -0.390625 -0.390625 -2.734375 -0.390625 1.953125 2.734375 1.171875 -1.171875 -0.390625 -2.734375 -1.171875 0.390625 0.390625 1.171875 1.171875 -1.171875 0.390625 -1.171875 -1.171875 -2.734375 -1.953125 -2.734375 -1.171875 -0.390625 -0.390625 1.953125 -2.734375 2.734375 -1.953125 -1.953125 2.734375 -1.953125 1.953125 -0.390625 0.390625 1.171875 -0.390625 -1.953125 1.953125 1.953125 1.171875 -0.390625 0.390625 0.390625 0.390625 -2.734375 1.171875 -1.171875 1.171875 -1.953125 0.390625
</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" >
89.593 90.0 95.0 100.0 105.0 110.0 114.417 115.0 118.833 120.0 123.25 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 382.753 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.84 2.371 2.65 2.739 2.616 2.616 2.616 2.648 2.739 2.797 2.961 3.125 3.29 3.455 3.622 3.789 3.957 4.127 4.298 4.471 4.645 4.821 4.998 5.177 5.358 5.54 5.723 5.908 6.095 6.282 6.471 6.662 6.853 7.045 7.239 7.432 7.627 7.821 8.016 8.21 8.404 8.596 8.788 8.977 9.164 9.348 9.528 9.704 9.874 10.038 10.195 10.343 10.481 10.609 10.724 10.826 10.914 10.985 11.04 11.078 11.097 11.1 11.099 11.093 11.079 11.059 11.033 11.001 10.963 10.92 10.871 10.818 10.76 10.697 10.63 10.56 10.485 10.407 10.326 10.242 10.155 10.066 9.974 9.88 9.784 9.686 9.586 9.485 9.382 9.278 9.174 9.068 8.961 8.854 8.746 8.638 8.53 8.421 8.312 8.203 8.095 7.986 7.878 7.77 7.662 7.555 7.448 7.341 7.236 7.131 7.027 6.923 6.82 6.718 6.617 6.517 6.418 6.319 6.222 6.125 6.03 5.936 5.842 5.75 5.659 5.568 5.479 5.391 5.304 5.218 5.134 5.05 4.967 4.886 4.806 4.726 4.648 4.571 4.495 4.42 4.346 4.273 4.202 4.131 4.061 3.993 3.925 3.859 3.793 3.729 3.665 3.603 3.541 3.481 3.421 3.362 3.304 3.248 3.192 3.137 3.083 3.029 2.977 2.925 2.875 2.825 2.776 2.728 2.68 2.633 2.588 2.542 2.498 2.455 2.412 2.369 2.328 2.287 2.247 2.208 2.169 2.131 2.094 2.057 2.021 1.985

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.739" PeakHeight="110.0" Num="3" Error="0.0">
-29.959 12.361 -2.809
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.739" EndFrequency="11.1" PeakHeight="382.753" Num="5" zHalfNm="265.71" Error="2.021">
-242.444 -26.224 10.046 -0.991 0.11
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.25" Depth="0.123"/>
<TopsideChapman PeakHeight="382.753" PeakDensity="1528660.0" PeakScaleHeight="87.076" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
