<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 17:10:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.10.14 (287) 17:10:00</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">
FF202628710141710009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.392" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.914" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="360.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="360.000" 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="10.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="565.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.166" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.255" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="408.012" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="282.292" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.865" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="166.890" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="63.345" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="92.793" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="210.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.330" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="107">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.15 11.2 11.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
360.000 360.000 360.000 360.000 360.000 360.000 365.000 367.500 370.000 370.000 370.000 370.000 370.000 370.000 370.000 380.000 380.000 380.000 380.000 380.000 380.000 382.403 384.805 387.208 389.610 392.013 394.416 396.818 399.221 401.623 404.026 406.429 408.831 411.234 413.636 416.039 418.442 420.844 423.247 425.649 428.052 430.455 432.857 435.260 437.662 440.065 442.468 444.870 447.273 449.675 452.078 454.481 456.883 459.286 461.688 464.091 466.494 468.896 471.299 473.701 476.104 478.506 480.909 483.312 485.714 488.117 490.519 492.922 495.325 497.727 500.130 502.532 504.935 507.338 509.740 512.143 514.545 516.948 519.351 521.753 524.156 526.558 528.961 531.364 533.766 536.169 538.571 540.974 543.377 545.779 548.182 550.584 552.987 555.390 557.792 560.195 562.597 565.000 575.000 590.000 603.579 619.964 640.128 665.545 698.579 743.254 807.041
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 60 60 66 0 66 63 0 0 0 0 0 0 0 57 57 0 66 0 63 63 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 0 0 0 0 0 54 54 54 57 54 51 45 54 42 42
</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 1.171875 0.390625 -0.390625 -0.390625 -0.390625 2.734375 -2.734375 2.734375 -2.734375 1.953125 -2.734375 0.390625 -1.171875 -2.734375 2.734375 -2.734375 -2.734375 -2.734375 1.953125 -2.734375 -0.390625 1.171875 1.953125 1.171875 -0.390625 -0.390625 -1.171875 -1.171875 0.390625 2.734375 1.171875 1.953125 1.171875 2.734375 -1.953125 -2.734375 -0.390625 2.734375 -0.390625 0.390625 1.171875 1.953125 1.953125 1.171875 -1.953125 2.734375 1.171875 -0.390625 2.734375 -2.734375 -1.953125 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 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" >
89.518 90.0 95.0 100.0 105.0 110.0 112.491 114.981 115.0 117.472 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 408.012 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.238 2.129 2.74 3.063 3.166 3.044 3.044 3.045 3.166 3.242 3.392 3.541 3.689 3.835 3.98 4.124 4.267 4.408 4.549 4.69 4.83 4.97 5.109 5.249 5.389 5.529 5.67 5.811 5.952 6.095 6.238 6.382 6.527 6.673 6.82 6.968 7.117 7.268 7.42 7.573 7.727 7.883 8.04 8.199 8.358 8.519 8.681 8.843 9.007 9.17 9.334 9.497 9.66 9.821 9.98 10.137 10.289 10.436 10.576 10.708 10.83 10.94 11.036 11.117 11.179 11.223 11.246 11.25 11.249 11.244 11.232 11.215 11.191 11.163 11.129 11.09 11.047 10.999 10.946 10.89 10.829 10.765 10.698 10.627 10.553 10.476 10.397 10.315 10.23 10.144 10.055 9.964 9.872 9.778 9.683 9.586 9.488 9.389 9.29 9.189 9.088 8.986 8.883 8.78 8.677 8.574 8.471 8.367 8.264 8.16 8.057 7.954 7.851 7.749 7.647 7.545 7.444 7.344 7.244 7.145 7.046 6.948 6.851 6.754 6.658 6.563 6.469 6.376 6.284 6.192 6.102 6.012 5.923 5.835 5.748 5.662 5.577 5.493 5.41 5.328 5.247 5.167 5.088 5.009 4.932 4.856 4.781 4.706 4.633 4.561 4.489 4.419 4.35 4.281 4.214 4.147 4.081 4.017 3.953 3.89 3.828 3.767 3.706 3.647 3.588 3.531 3.474 3.418 3.363 3.309 3.255 3.202 3.151 3.1 3.049 3.0 2.951 2.903 2.856 2.809 2.763 2.718 2.674 2.63 2.587 2.545 2.503

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.166" PeakHeight="110.0" Num="3" Error="0.0">
-30.331 12.901 -3.052
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.166" EndFrequency="11.25" PeakHeight="408.012" Num="5" zHalfNm="282.292" Error="3.549">
-254.076 -53.207 17.58 -0.316 -0.521
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="7.472" Depth="0.122"/>
<TopsideChapman PeakHeight="408.012" PeakDensity="1570254.4" PeakScaleHeight="92.793" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
