<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 16:20:00.000"
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="12.0">
<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" >
2026.10.22 (295) 16:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629510221620009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.453" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.088" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="345.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="345.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.292" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.315" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="385.763" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="270.622" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.493" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="151.133" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="60.024" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="84.473" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="197.810" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="108">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
345.000 345.000 345.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 375.000 380.000 385.000 385.000 385.000 385.000 385.000 390.000 390.000 390.000 395.000 395.000 400.000 400.000 400.000 402.373 404.746 407.119 409.492 411.864 414.237 416.610 418.983 421.356 423.729 426.102 428.475 430.847 433.220 435.593 437.966 440.339 442.712 445.085 447.458 449.831 452.203 454.576 456.949 459.322 461.695 464.068 466.441 468.814 471.186 473.559 475.932 478.305 480.678 483.051 485.424 487.797 490.169 492.542 494.915 497.288 499.661 502.034 504.407 506.780 509.153 511.525 513.898 516.271 518.644 521.017 523.390 525.763 528.136 530.508 532.881 535.254 537.627 540.000 550.000 550.000 560.000 570.000 580.000 590.000 605.000 623.460 647.910 681.828
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 63 60 57 0 0 0 63 0 66 66 63 66 69 66 66 66 66 63 66 69 66 57 0 66 54 60 66 72 69 66 69 66 66 69 63 69 69 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 54 42 54 54 54 54 51 51 51 45 45
</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 2.734375 2.734375 0.390625 0.390625 -0.390625 -0.390625 2.734375 -2.734375 -1.171875 -2.734375 1.953125 1.953125 -1.953125 -1.171875 -2.734375 -2.734375 -2.734375 1.953125 -1.953125 -1.953125 2.734375 -0.390625 -2.734375 -1.953125 1.953125 1.953125 2.734375 -1.171875 0.390625 -1.953125 -2.734375 -2.734375 -2.734375 -2.734375 -0.390625 -2.734375 1.953125 -1.953125 2.734375 -0.390625 1.171875 2.734375 1.953125 1.171875 -0.390625 -1.953125 1.171875 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" >
89.498 90.0 95.0 100.0 105.0 110.0 111.956 113.912 115.0 115.868 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 385.763 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.214 2.849 3.185 3.292 3.17 3.17 3.238 3.292 3.446 3.621 3.788 3.949 4.106 4.26 4.412 4.561 4.71 4.857 5.004 5.151 5.298 5.444 5.591 5.739 5.887 6.036 6.185 6.336 6.487 6.64 6.794 6.949 7.105 7.263 7.423 7.584 7.746 7.91 8.076 8.243 8.412 8.582 8.754 8.927 9.101 9.277 9.453 9.629 9.806 9.982 10.156 10.328 10.496 10.659 10.815 10.96 11.093 11.211 11.308 11.382 11.43 11.45 11.45 11.447 11.437 11.419 11.395 11.364 11.326 11.282 11.233 11.178 11.117 11.052 10.982 10.908 10.83 10.747 10.662 10.573 10.48 10.385 10.288 10.187 10.085 9.981 9.874 9.767 9.657 9.547 9.435 9.322 9.209 9.095 8.98 8.865 8.749 8.634 8.518 8.402 8.287 8.171 8.056 7.941 7.827 7.714 7.6 7.488 7.376 7.265 7.155 7.046 6.937 6.829 6.723 6.617 6.513 6.409 6.307 6.206 6.105 6.006 5.908 5.812 5.716 5.622 5.528 5.436 5.345 5.256 5.167 5.08 4.994 4.909 4.826 4.743 4.662 4.582 4.503 4.426 4.349 4.274 4.2 4.127 4.055 3.984 3.914 3.845 3.778 3.712 3.646 3.582 3.519 3.456 3.395 3.335 3.276 3.218 3.16 3.104 3.049 2.994 2.941 2.888 2.836 2.786 2.736 2.687 2.638 2.591 2.544 2.499 2.454 2.409 2.366 2.323 2.281 2.24 2.2 2.16 2.121 2.082 2.045 2.008 1.971 1.935

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.292" PeakHeight="110.0" Num="3" Error="0.0">
-30.429 13.045 -3.118
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.292" EndFrequency="11.45" PeakHeight="385.763" Num="5" zHalfNm="270.622" Error="2.324">
-231.497 -56.981 19.182 -0.56 -0.039
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.868" Depth="0.122"/>
<TopsideChapman PeakHeight="385.763" PeakDensity="1626581.9" PeakScaleHeight="84.473" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
