<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 12:20:00.000"
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="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" >
2026.10.13 (286) 12:20:00</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">
FF202628610131220009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.661" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.537" 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="11.700" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="457.115" 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="3.180" 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="4.262" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="345.044" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.377" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.993" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="127.919" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="47.862" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="71.708" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="165.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.280" 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" >
5.85 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" >
320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 330.000 330.000 330.000 330.000 330.000 330.000 330.000 332.500 335.000 335.000 335.000 335.000 336.000 337.000 338.000 339.000 340.000 340.000 340.000 340.000 341.826 343.652 345.478 347.305 349.131 350.957 352.783 354.609 356.435 358.262 360.088 361.914 363.740 365.566 367.392 369.219 371.045 372.871 374.697 376.523 378.349 380.176 382.002 383.828 385.654 387.480 389.306 391.133 392.959 394.785 396.611 398.437 400.263 402.089 403.916 405.742 407.568 409.394 411.220 413.046 414.873 416.699 418.525 420.351 422.177 424.003 425.830 427.656 429.482 431.308 433.134 434.960 436.787 438.613 440.439 442.749 445.221 447.872 450.722 453.794 457.115 460.718 464.638 468.921 473.619 480.000 485.000 490.000 500.000 505.000 515.000 525.000 540.000 550.000 570.000 589.637
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 60 0 60 63 60 57 0 57 0 0 0 0 0 0 63 0 0 0 0 0 0 57 0 0 0 0 66 69 0 0 0 0 0 0 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 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 -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 2.734375 -0.390625 -1.171875 -0.390625 -1.953125 -2.734375 -0.390625 -2.734375 -1.953125 0.390625 1.171875 -2.734375 2.734375 -2.734375 1.953125 -0.390625 0.390625 -0.390625 1.953125 2.734375 -1.171875 -2.734375 1.171875 -2.734375 0.390625 -1.953125 -1.171875 1.953125 -2.734375 -1.953125 -0.390625 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" >
89.515 90.0 95.0 100.0 105.0 110.0 112.428 114.857 115.0 117.285 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 345.044 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 2.138 2.752 3.077 3.18 3.058 3.058 3.065 3.18 3.298 3.499 3.688 3.869 4.044 4.215 4.383 4.55 4.716 4.881 5.046 5.212 5.379 5.546 5.715 5.886 6.058 6.232 6.409 6.588 6.769 6.953 7.139 7.328 7.521 7.716 7.913 8.114 8.317 8.523 8.731 8.94 9.151 9.361 9.57 9.777 9.98 10.176 10.363 10.538 10.696 10.833 10.946 11.03 11.082 11.1 11.1 11.095 11.08 11.055 11.021 10.978 10.928 10.869 10.803 10.731 10.652 10.567 10.477 10.381 10.281 10.177 10.069 9.957 9.842 9.724 9.603 9.481 9.356 9.229 9.101 8.972 8.842 8.711 8.58 8.448 8.316 8.183 8.051 7.92 7.788 7.657 7.527 7.398 7.269 7.142 7.015 6.889 6.765 6.642 6.52 6.399 6.28 6.163 6.046 5.932 5.819 5.707 5.597 5.488 5.381 5.276 5.172 5.07 4.97 4.871 4.774 4.678 4.584 4.492 4.401 4.312 4.224 4.138 4.054 3.971 3.889 3.809 3.731 3.654 3.578 3.504 3.431 3.36 3.29 3.221 3.154 3.088 3.023 2.96 2.898 2.837 2.777 2.719 2.661 2.605 2.55 2.496 2.443 2.392 2.341 2.291 2.243 2.195 2.148 2.103 2.058 2.014 1.971 1.929 1.888 1.848 1.808 1.77 1.732 1.695 1.659 1.623 1.589 1.555 1.521 1.489 1.457 1.426 1.395 1.365 1.336 1.307 1.279 1.252 1.225 1.199 1.173 1.148 1.123 1.099 1.075 1.052

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.18" PeakHeight="110.0" Num="3" Error="0.0">
-30.342 12.917 -3.06
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.18" EndFrequency="11.1" PeakHeight="345.044" Num="5" zHalfNm="248.377" Error="3.115">
-196.771 -44.697 12.918 1.015 -0.224
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.285" Depth="0.122"/>
<TopsideChapman PeakHeight="345.044" PeakDensity="1528660.0" PeakScaleHeight="71.708" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
