<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 22:00:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 65% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</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" >
2026.10.19 (292) 22:00:00</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">
FF202629210192200009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="6.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.804" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.225" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="1.850" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="400.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="400.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="90.000" Name="h`Es" 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="0.850" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="445.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="398.215" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="344.570" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.510" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="1.200" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="79.983" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="9.056" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="39.401" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="86.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.500" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="47">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
405.000 400.000 405.000 405.000 410.000 415.000 420.000 425.000 425.000 425.000 426.250 427.500 428.750 430.000 430.000 425.000 427.727 430.455 433.182 435.909 438.636 441.364 444.091 446.818 449.545 452.273 455.000 455.000 455.000 455.000 465.000 463.333 461.667 460.000 453.333 446.667 440.000 440.000 441.000 442.000 443.000 444.000 445.000 462.521 487.192 524.511 587.556
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57 57 57 51 57 0 57 54 54 0 0 0 54 54 51 0 0 0 0 0 0 0 0 0 54 54 51 54 54 54 0 51 54 57 0 69 60 0 75 0 0 72 0 54 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 0.390625 -0.390625 -1.171875 -1.953125 -1.171875 -2.734375 -1.171875 -0.390625 -1.953125 0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -1.953125 -1.953125 -1.171875 -0.390625 -2.734375 -1.171875 -1.171875 -1.953125 -1.953125 0.390625 -1.171875 0.390625 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 -1.171875 -1.953125 0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.2 1.25 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
95.000 90.000 91.667 93.333 95.000 94.375 93.750 93.125 92.500 91.875 91.250 90.625 90.000 90.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 63 0 0 63 0 0 0 0 0 0 0 60 60
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="167">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.869 145.0 150.0 155.0 160.0 165.0 170.0 173.737 175.0 180.0 185.0 190.0 195.0 200.0 205.0 205.606 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 398.215 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.342 0.326 0.303 0.27 0.223 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.206 0.23 0.254 0.279 0.303 0.327 0.351 0.354 0.41 0.475 0.545 0.621 0.706 0.801 0.907 1.024 1.153 1.292 1.441 1.598 1.761 1.929 2.102 2.278 2.458 2.64 2.825 3.013 3.204 3.397 3.592 3.791 3.992 4.197 4.404 4.614 4.827 5.042 5.259 5.476 5.69 5.899 6.095 6.268 6.404 6.485 6.5 6.499 6.482 6.447 6.395 6.329 6.249 6.158 6.056 5.946 5.828 5.704 5.575 5.442 5.306 5.167 5.027 4.887 4.746 4.605 4.466 4.328 4.191 4.056 3.924 3.794 3.667 3.542 3.421 3.302 3.186 3.074 2.965 2.858 2.755 2.655 2.558 2.465 2.374 2.286 2.201 2.119 2.04 1.963 1.89 1.818 1.75 1.683 1.619 1.558 1.499 1.441 1.386 1.333 1.282 1.233 1.186 1.14 1.096 1.054 1.013 0.974 0.937 0.901 0.866 0.832 0.8 0.769 0.74 0.711 0.683 0.657 0.631 0.607 0.583 0.561 0.539 0.518 0.498 0.479 0.46 0.442 0.425 0.409 0.393 0.378 0.363 0.349 0.335 0.322 0.31 0.298 0.286 0.275 0.264 0.254 0.244 0.235 0.226 0.217 0.208 0.2

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="6.5" PeakHeight="398.215" Num="5" zHalfNm="344.57" Error="4.261">
-174.966 -30.93 19.696 -9.073 2.664
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="95.606" Depth="0.154"/>
<TopsideChapman PeakHeight="398.215" PeakDensity="524193.56" PeakScaleHeight="39.401" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
