<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 20:30:00.000"
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="14.0">
<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: 50% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other, Unidentified traces above foF2</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" >
2026.10.23 (296) 20:30:00</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">
FF202629610232030009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.621" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.128" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.700" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" 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="0.300" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="490.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="1.440" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.700" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.700" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="364.002" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="282.496" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.373" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="115.621" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="34.184" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="59.059" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="128.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.510" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="94">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 305.000 307.500 310.000 310.000 315.000 315.000 315.000 317.500 320.000 320.000 320.000 325.000 325.000 325.000 327.500 330.000 335.000 335.000 335.000 335.000 340.000 341.667 343.333 345.000 350.000 352.097 354.194 356.290 358.387 360.484 362.581 364.677 366.774 368.871 370.968 373.065 375.161 377.258 379.355 381.452 383.548 385.645 387.742 389.839 391.935 394.032 396.129 398.226 400.323 402.419 404.516 406.613 408.710 410.806 412.903 415.000 420.000 422.500 425.000 427.500 430.000 432.500 435.000 435.000 435.000 440.000 440.000 442.500 445.000 450.000 450.000 455.000 455.000 455.000 460.000 460.000 465.000 467.500 470.000 475.000 480.000 480.000 485.000 490.000 490.000 495.340 501.234 507.775 515.074 523.271 532.544 543.118 555.288
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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 57 0 0 0 0 0 51 57 63 57 66 0 66 57 63 57 66 63 66 57 63 0 63 63 54 60 57 51 60 54 48 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 1.953125 0.390625 -0.390625 2.734375 -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 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -2.734375 2.734375 -0.390625 0.390625 -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" >
89.963 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.711 125.0 130.0 133.423 135.0 140.0 145.0 145.134 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 364.002 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.203 0.962 1.247 1.394 1.44 1.414 1.333 1.291 1.291 1.291 1.291 1.311 1.375 1.438 1.44 1.583 1.731 1.884 2.045 2.216 2.397 2.59 2.793 3.006 3.227 3.455 3.688 3.923 4.161 4.4 4.638 4.876 5.113 5.349 5.584 5.818 6.051 6.283 6.514 6.745 6.975 7.204 7.433 7.662 7.89 8.118 8.344 8.57 8.794 9.015 9.233 9.444 9.647 9.837 10.009 10.155 10.266 10.333 10.35 10.35 10.34 10.316 10.28 10.232 10.172 10.103 10.023 9.935 9.838 9.735 9.624 9.507 9.385 9.258 9.126 8.991 8.852 8.711 8.568 8.422 8.275 8.127 7.978 7.829 7.679 7.53 7.38 7.232 7.084 6.937 6.791 6.647 6.503 6.362 6.222 6.084 5.947 5.813 5.681 5.55 5.422 5.296 5.172 5.05 4.93 4.813 4.698 4.585 4.474 4.366 4.259 4.155 4.053 3.954 3.856 3.761 3.667 3.576 3.487 3.4 3.314 3.231 3.15 3.07 2.993 2.917 2.843 2.771 2.7 2.632 2.564 2.499 2.435 2.373 2.312 2.253 2.195 2.139 2.084 2.03 1.978 1.927 1.877 1.829 1.781 1.735 1.691 1.647 1.604 1.563 1.522 1.483 1.444 1.407 1.37 1.335 1.3 1.266 1.234 1.201 1.17 1.14 1.11 1.081 1.053 1.026 0.999 0.973 0.948 0.923 0.899 0.876 0.853 0.831 0.809 0.788 0.767 0.747 0.728 0.709 0.69 0.672 0.655 0.638 0.621 0.605 0.589

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.44" PeakHeight="110.0" Num="3" Error="0.0">
-27.98 9.706 -1.763
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.44" EndFrequency="10.35" PeakHeight="364.002" Num="5" zHalfNm="282.496" Error="3.33">
-201.459 -31.254 20.563 -9.072 2.354
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="35.134" Depth="0.149"/>
<TopsideChapman PeakHeight="364.002" PeakDensity="1329063.2" PeakScaleHeight="59.059" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
