<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 17:40:00.000"
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 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" >
2026.10.17 (290) 17:40:00</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">
FF202629010171740009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.461" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.460" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="355.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="355.000" 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="511.101" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.048" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.197" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="396.842" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.243" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.044" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="172.572" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="59.112" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="95.951" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="204.140" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="98">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
355.000 355.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 370.000 370.000 370.000 375.000 375.000 375.000 380.000 380.000 380.000 382.341 384.682 387.023 389.364 391.705 394.047 396.388 398.729 401.070 403.411 405.752 408.093 410.434 412.775 415.116 417.458 419.799 422.140 424.481 426.822 429.163 431.504 433.845 436.186 438.527 440.869 443.210 445.551 447.892 450.233 452.574 454.915 457.256 459.597 461.938 464.279 466.621 468.962 471.303 473.644 475.985 478.326 480.667 483.008 485.349 487.690 490.032 492.373 494.714 497.055 499.396 501.737 504.078 506.419 508.760 511.101 515.000 525.000 530.000 535.000 545.000 555.000 560.000 575.000 585.000 600.000 615.000 635.000 655.000 680.000 710.000 748.704
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 66 66 66 69 66 66 66 69 69 69 69 69 69 69 69 72 69 66 72 75 72 72 0 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 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 2.734375 0.390625 1.171875 -0.390625 -0.390625 1.171875 1.171875 1.953125 -2.734375 -2.734375 -2.734375 1.953125 1.171875 2.734375 0.390625 -0.390625 -0.390625 2.734375 2.734375 0.390625 -0.390625 1.953125 -2.734375 -0.390625 -1.171875 0.390625 1.171875 -1.171875 -1.171875 1.171875 2.734375 -2.734375 1.171875 2.734375 1.171875 1.171875 0.390625 -0.390625 1.171875 -2.734375 2.734375 -0.390625 0.390625 1.171875 2.734375 0.390625 1.171875 -1.953125 2.734375 0.390625 -2.734375 -2.734375 1.171875 2.734375 2.734375 -1.953125 -0.390625 -2.734375 -1.171875 2.734375 -2.734375
</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" >
89.538 90.0 95.0 100.0 105.0 110.0 113.004 115.0 116.009 119.013 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 396.842 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.237 2.049 2.638 2.949 3.048 2.926 2.926 2.926 3.048 3.078 3.232 3.386 3.54 3.692 3.843 3.993 4.141 4.288 4.434 4.579 4.724 4.868 5.013 5.158 5.303 5.449 5.595 5.743 5.891 6.041 6.192 6.345 6.499 6.655 6.813 6.972 7.133 7.296 7.461 7.627 7.794 7.963 8.133 8.303 8.474 8.644 8.814 8.982 9.147 9.31 9.468 9.622 9.769 9.91 10.042 10.165 10.279 10.381 10.473 10.552 10.618 10.671 10.711 10.737 10.749 10.75 10.749 10.743 10.731 10.714 10.692 10.665 10.634 10.598 10.558 10.514 10.466 10.414 10.359 10.3 10.239 10.174 10.107 10.036 9.964 9.889 9.812 9.733 9.651 9.569 9.484 9.398 9.311 9.222 9.133 9.042 8.951 8.858 8.765 8.671 8.577 8.482 8.387 8.292 8.197 8.101 8.005 7.91 7.814 7.719 7.624 7.529 7.434 7.339 7.246 7.152 7.059 6.966 6.874 6.783 6.692 6.602 6.512 6.423 6.335 6.247 6.16 6.074 5.989 5.905 5.821 5.738 5.656 5.575 5.495 5.415 5.337 5.259 5.182 5.106 5.031 4.957 4.883 4.811 4.739 4.668 4.598 4.529 4.461 4.394 4.327 4.262 4.197 4.133 4.07 4.008 3.947 3.886 3.827 3.768 3.71 3.652 3.596 3.54 3.486 3.431 3.378 3.326 3.274 3.223 3.172 3.123 3.074 3.026 2.978 2.932 2.886 2.84 2.796 2.751 2.708 2.665 2.623 2.582 2.541 2.501 2.461

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.048" PeakHeight="110.0" Num="3" Error="0.0">
-30.235 12.761 -2.988
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.048" EndFrequency="10.75" PeakHeight="396.842" Num="5" zHalfNm="269.243" Error="3.448">
-255.852 -31.595 8.055 2.774 -1.211
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="9.013" Depth="0.122"/>
<TopsideChapman PeakHeight="396.842" PeakDensity="1433777.9" PeakScaleHeight="95.951" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
