<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 19:30:00.000"
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: 45% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.15 (288) 19:30:00</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">
FF202628810151930009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.470" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.199" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="9.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="525.937" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.333" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="382.320" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="266.915" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.457" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="157.588" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.611" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="83.886" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="177.870" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.590" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="80">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 335.000 336.250 337.500 338.750 340.000 345.000 345.000 346.250 347.500 348.750 350.000 355.000 355.000 360.000 360.000 360.000 360.000 363.254 366.507 369.761 373.015 376.268 379.522 382.776 386.029 389.283 392.537 395.790 399.044 402.298 405.551 408.805 412.059 415.312 418.566 421.820 425.074 428.327 431.581 434.835 438.088 441.342 444.596 447.849 451.103 454.357 457.610 460.864 464.118 467.371 470.625 473.879 477.132 480.386 483.640 486.893 490.147 493.401 496.654 499.908 503.162 506.415 509.669 512.923 516.176 519.430 522.684 525.937 529.191 535.000 540.000 550.000 560.000 570.000 585.000 600.000 620.000 645.000 681.317
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 69 0 48 0 69 72 72 0 57 0 72 75 75 72 75 69 72 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 1.171875 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 1.171875 1.953125 -2.734375 -1.953125 1.171875 -2.734375 -2.734375 -1.171875 1.171875 -1.953125 -1.171875 0.390625 -2.734375 -1.953125 -0.390625 -1.171875 -2.734375 -1.953125 -1.953125 0.390625 -2.734375 2.734375 2.734375 -1.953125 1.171875 1.953125 0.390625 2.734375 0.390625 1.953125 -1.171875 -1.953125 -1.171875 -1.953125 -1.953125 2.734375 -1.953125 -2.734375 1.953125 2.734375 2.734375 2.734375 0.390625 -1.171875 2.734375 -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" >
89.676 90.0 95.0 100.0 105.0 110.0 115.0 116.43 120.0 122.859 125.0 129.289 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 382.32 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.227 1.565 2.02 2.258 2.333 2.257 2.206 2.206 2.206 2.248 2.333 2.354 2.5 2.648 2.8 2.957 3.118 3.285 3.457 3.633 3.813 3.997 4.183 4.372 4.561 4.752 4.942 5.132 5.322 5.51 5.698 5.884 6.068 6.252 6.433 6.614 6.792 6.97 7.146 7.32 7.493 7.664 7.834 8.002 8.169 8.334 8.496 8.657 8.814 8.969 9.12 9.267 9.409 9.544 9.672 9.79 9.898 9.993 10.072 10.134 10.176 10.198 10.2 10.199 10.192 10.178 10.158 10.131 10.099 10.061 10.018 9.97 9.917 9.86 9.798 9.732 9.663 9.59 9.513 9.434 9.352 9.267 9.18 9.09 8.999 8.905 8.81 8.714 8.616 8.517 8.417 8.316 8.214 8.112 8.009 7.906 7.802 7.698 7.594 7.491 7.387 7.283 7.18 7.077 6.975 6.873 6.771 6.67 6.57 6.471 6.372 6.274 6.176 6.08 5.984 5.89 5.796 5.703 5.611 5.52 5.431 5.342 5.254 5.167 5.082 4.997 4.914 4.831 4.75 4.67 4.591 4.513 4.436 4.36 4.285 4.211 4.139 4.067 3.997 3.927 3.859 3.791 3.725 3.66 3.595 3.532 3.47 3.409 3.348 3.289 3.231 3.173 3.117 3.061 3.007 2.953 2.9 2.848 2.797 2.747 2.698 2.649 2.602 2.555 2.509 2.463 2.419 2.375 2.332 2.29 2.249 2.208 2.168 2.128 2.09 2.052 2.014 1.978 1.942 1.906 1.872 1.838 1.804 1.771 1.739 1.707 1.676

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.333" PeakHeight="110.0" Num="3" Error="0.0">
-29.52 11.738 -2.542
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.333" EndFrequency="10.2" PeakHeight="382.32" Num="5" zHalfNm="266.915" Error="2.463">
-237.418 -27.523 17.236 -6.833 1.507
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="19.289" Depth="0.127"/>
<TopsideChapman PeakHeight="382.32" PeakDensity="1290818.9" PeakScaleHeight="83.886" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
