<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-13 -286 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="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) 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">
FF202628610131540009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.375" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.938" 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="10.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="562.314" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.369" 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="/" />
<Modeled Name="foF1p" Val="4.351" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="388.009" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.011" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.158" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="162.769" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.193" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="90.967" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="215.050" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.250" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="97">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 327.500 330.000 330.000 335.000 340.000 340.000 340.000 345.000 345.000 350.000 350.000 350.000 355.000 355.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 375.000 375.000 375.000 380.000 381.667 383.333 385.000 388.166 391.333 394.499 397.665 400.832 403.998 407.164 410.331 413.497 416.663 419.830 422.996 426.162 429.328 432.495 435.661 438.827 441.994 445.160 448.326 451.493 454.659 457.825 460.992 464.158 467.324 470.491 473.657 476.823 479.990 483.156 486.322 489.489 492.655 495.821 498.987 502.154 505.320 508.486 511.653 514.819 517.985 521.152 524.318 527.484 530.651 533.817 536.983 540.150 543.316 546.482 549.649 552.815 555.981 559.148 562.314 565.480 570.000 575.000 585.000 590.000 600.000 610.000 625.000 640.000 660.000 681.210
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 51 0 60 51 0 51 60 63 60 63 60 63 66 66 69 60 66 60 63 66 63 48 57 0 63 60 0 0 60 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
</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 -2.734375 -2.734375 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -2.734375 1.953125 -1.953125 -1.953125 -2.734375 1.171875 -0.390625 1.953125 1.953125 0.390625 -1.171875 -0.390625 -2.734375 -1.171875 -2.734375 2.734375 -2.734375 -0.390625 -0.390625 -0.390625 1.953125 -2.734375 1.171875 -1.953125 1.953125 2.734375 -1.171875 1.171875 0.390625 1.953125 -2.734375 1.171875 1.953125 -0.390625 -1.953125 2.734375 -2.734375 1.171875 0.390625 1.953125 0.390625 -1.171875 0.390625 1.171875 1.171875 1.953125 0.390625 -0.390625 -1.953125
</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" >
89.487 90.0 95.0 100.0 105.0 110.0 111.636 113.271 114.907 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 388.009 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.267 2.916 3.259 3.369 3.246 3.246 3.369 3.372 3.538 3.689 3.832 3.97 4.106 4.241 4.375 4.509 4.644 4.779 4.914 5.051 5.188 5.326 5.465 5.604 5.744 5.884 6.024 6.165 6.305 6.446 6.586 6.727 6.867 7.007 7.146 7.285 7.424 7.563 7.701 7.839 7.977 8.114 8.251 8.388 8.524 8.661 8.797 8.932 9.067 9.202 9.337 9.47 9.602 9.732 9.86 9.985 10.103 10.214 10.314 10.398 10.46 10.494 10.5 10.5 10.494 10.483 10.466 10.443 10.415 10.383 10.345 10.303 10.256 10.206 10.151 10.093 10.031 9.966 9.898 9.826 9.752 9.676 9.597 9.515 9.432 9.347 9.26 9.171 9.081 8.989 8.897 8.803 8.708 8.613 8.517 8.42 8.323 8.225 8.127 8.028 7.93 7.831 7.733 7.634 7.536 7.438 7.34 7.243 7.145 7.049 6.953 6.857 6.762 6.667 6.573 6.48 6.387 6.296 6.204 6.114 6.025 5.936 5.848 5.761 5.675 5.59 5.506 5.422 5.34 5.258 5.178 5.098 5.019 4.941 4.865 4.789 4.714 4.64 4.567 4.495 4.423 4.353 4.284 4.216 4.148 4.082 4.016 3.952 3.888 3.825 3.763 3.702 3.642 3.583 3.525 3.467 3.411 3.355 3.3 3.246 3.192 3.14 3.088 3.037 2.987 2.938 2.889 2.841 2.794 2.748 2.702 2.658 2.613 2.57 2.527 2.485 2.443 2.403 2.363 2.323 2.284 2.246 2.208 2.171 2.135 2.099

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.369" PeakHeight="110.0" Num="3" Error="0.0">
-30.485 13.129 -3.157
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.369" EndFrequency="10.5" PeakHeight="388.009" Num="5" zHalfNm="260.011" Error="2.874">
-232.094 -62.147 25.591 -6.545 2.093
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.907" Depth="0.123"/>
<TopsideChapman PeakHeight="388.009" PeakDensity="1367866.0" PeakScaleHeight="90.967" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
