<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-14 -287 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="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) 18:40:00</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">
FF202628710141840009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.419" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.695" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="11.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="560.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.736" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="407.428" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="287.944" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.314" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="163.011" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="62.431" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="88.563" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="194.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="121">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.45 5.5 5.55 5.6 5.65 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 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 11.3 11.35 11.4 11.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 316.500 318.000 319.500 321.000 322.500 324.000 325.500 327.000 328.500 330.000 332.500 335.000 337.500 340.000 340.000 342.500 345.000 346.667 348.333 350.000 355.000 355.000 355.000 360.000 361.667 363.333 365.000 366.667 368.333 370.000 370.000 370.000 372.375 374.750 377.125 379.500 381.875 384.250 386.625 389.000 391.375 393.750 396.125 398.500 400.875 403.250 405.625 408.000 410.375 412.750 415.125 417.500 419.875 422.250 424.625 427.000 429.375 431.750 434.125 436.500 438.875 441.250 443.625 446.000 448.375 450.750 453.125 455.500 457.875 460.250 462.625 465.000 467.375 469.750 472.125 474.500 476.875 479.250 481.625 484.000 486.375 488.750 491.125 493.500 495.875 498.250 500.625 503.000 505.375 507.750 510.125 512.500 514.875 517.250 519.625 522.000 524.375 526.750 529.125 531.500 533.875 536.250 538.625 541.000 543.375 545.750 548.125 550.500 552.875 555.250 557.625 560.000 565.000 575.000 595.000 610.000 630.000 658.023 696.833 754.140
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 72 75 0 69 69 0 72 0 0 78 66 0 78 69 0 0 0 0 0 75 78 0 0 0 0 0 0 0 0 0 0 0 0 0 45 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 51 57 60 60 57 57 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 -1.953125 -0.390625 2.734375 -0.390625 -0.390625 -1.953125 -0.390625 -2.734375 1.171875 -1.953125 1.171875 -1.953125 -1.171875 -0.390625 2.734375 -0.390625 -2.734375 1.953125 0.390625 0.390625 -1.171875 -0.390625 -1.953125 1.171875 -1.953125 -0.390625 1.171875 -1.953125 -2.734375 1.171875 -1.171875 -1.953125 2.734375 2.734375 2.734375 -1.171875 -1.171875 -1.171875 1.953125 0.390625 -2.734375 2.734375 1.171875 1.953125 -0.390625 1.953125 -2.734375 -2.734375 -1.953125 2.734375 0.390625 -2.734375 -1.953125 2.734375 -1.953125 0.390625 -1.953125 -1.953125 2.734375 -1.953125 -0.390625 1.171875 -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" >
89.593 90.0 95.0 100.0 105.0 110.0 114.434 115.0 118.868 120.0 123.302 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 407.428 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.838 2.369 2.647 2.736 2.613 2.613 2.613 2.644 2.736 2.789 2.944 3.099 3.253 3.407 3.561 3.715 3.868 4.022 4.176 4.331 4.486 4.642 4.799 4.956 5.115 5.274 5.435 5.596 5.759 5.923 6.088 6.254 6.422 6.591 6.762 6.933 7.106 7.281 7.456 7.633 7.811 7.99 8.171 8.352 8.533 8.715 8.898 9.08 9.262 9.443 9.622 9.8 9.975 10.146 10.313 10.474 10.629 10.775 10.911 11.036 11.148 11.244 11.324 11.385 11.427 11.447 11.45 11.449 11.442 11.428 11.408 11.381 11.349 11.311 11.267 11.218 11.164 11.106 11.043 10.976 10.905 10.83 10.752 10.67 10.585 10.498 10.408 10.315 10.22 10.123 10.025 9.924 9.822 9.718 9.614 9.508 9.401 9.293 9.185 9.076 8.966 8.856 8.746 8.636 8.525 8.415 8.305 8.195 8.085 7.975 7.866 7.758 7.65 7.542 7.435 7.329 7.223 7.118 7.014 6.911 6.809 6.707 6.606 6.507 6.408 6.31 6.214 6.118 6.023 5.93 5.837 5.746 5.655 5.566 5.478 5.39 5.304 5.219 5.136 5.053 4.971 4.89 4.811 4.732 4.655 4.579 4.504 4.43 4.357 4.285 4.214 4.144 4.075 4.007 3.94 3.874 3.809 3.745 3.683 3.621 3.56 3.5 3.441 3.382 3.325 3.269 3.213 3.159 3.105 3.052 3.0 2.949 2.899 2.849 2.801 2.753 2.706 2.659 2.614 2.569 2.525 2.481 2.439 2.397 2.356 2.315

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.736" PeakHeight="110.0" Num="3" Error="0.0">
-29.957 12.357 -2.807
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.736" EndFrequency="11.45" PeakHeight="407.428" Num="5" zHalfNm="287.944" Error="1.764">
-256.086 -42.605 15.94 -1.305 -0.07
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.302" Depth="0.123"/>
<TopsideChapman PeakHeight="407.428" PeakDensity="1626581.9" PeakScaleHeight="88.563" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
