<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 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="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="1 2 0 0 0 0 0 0 0 44 0 0 0 0 0 0 0 0 0 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" >
2026.10.19 (292) 20:30:00</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">
FF202629210192030009039031101000005012000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="10.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.338" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.199" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="1.100" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="1.360" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.750" 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="24" Val="95.365" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="94.271" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="4.272" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="556.611" 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="1.449" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="433.053" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="307.465" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.372" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="178.699" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="52.723" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="93.480" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="181.620" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.980" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="84">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
345.000 350.000 350.000 350.000 355.000 360.000 361.250 362.500 363.750 365.000 365.000 365.000 365.000 370.000 375.000 375.000 378.750 382.500 386.250 390.000 393.400 396.800 400.201 403.601 407.001 410.401 413.802 417.202 420.602 424.002 427.402 430.803 434.203 437.603 441.003 444.404 447.804 451.204 454.604 458.004 461.405 464.805 468.205 471.605 475.006 478.406 481.806 485.206 488.606 492.007 495.407 498.807 502.207 505.608 509.008 512.408 515.808 519.208 522.609 526.009 529.409 532.809 536.210 539.610 543.010 546.410 549.810 553.211 556.611 560.011 563.411 570.000 575.000 585.000 595.000 605.000 615.000 630.000 645.000 660.000 685.000 710.000 740.000 780.226
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 60 0 63 60 57 0 57 0 63 0 0 63 0 0 0 60 0 0 63 0 0 0 0 0 48 0 51 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" >
-1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 1.953125 1.171875 -0.390625 -0.390625 -0.390625 2.734375 -1.953125 -0.390625 -0.390625 0.390625 2.734375 -1.171875 -0.390625 1.171875 2.734375 2.734375 -0.390625 -1.953125 -0.390625 2.734375 -2.734375 1.171875 1.171875 -0.390625 1.171875 1.171875 2.734375 -1.171875 0.390625 1.171875 0.390625 1.953125 0.390625 0.390625 1.953125 -0.390625 -2.734375 1.171875 -0.390625 -1.171875 0.390625 0.390625 -0.390625 2.734375 2.734375 -0.390625 0.390625 -1.953125 1.953125 0.390625 -2.734375 2.734375 2.734375 2.734375 0.390625 -2.734375 -0.390625 2.734375 2.734375 0.390625 -1.171875 -0.390625 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="6">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.1 1.15 1.2 1.25 1.3 1.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
95.365 96.004 96.712 97.504 98.397 99.420
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 2.734375 -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" >
90.0 94.271 95.0 100.0 105.0 105.919 110.0 115.0 117.568 120.0 125.0 129.216 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 433.053 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 1.36 1.359 1.327 1.242 1.22 1.22 1.22 1.22 1.249 1.309 1.36 1.376 1.476 1.578 1.681 1.787 1.897 2.012 2.132 2.257 2.388 2.526 2.67 2.82 2.977 3.141 3.31 3.485 3.665 3.85 4.039 4.232 4.428 4.626 4.826 5.027 5.229 5.431 5.634 5.837 6.039 6.24 6.44 6.638 6.836 7.031 7.224 7.415 7.604 7.789 7.972 8.151 8.327 8.498 8.665 8.827 8.984 9.136 9.281 9.419 9.55 9.674 9.789 9.894 9.99 10.076 10.151 10.215 10.267 10.306 10.333 10.348 10.35 10.35 10.345 10.334 10.318 10.297 10.271 10.241 10.205 10.166 10.122 10.075 10.024 9.969 9.911 9.849 9.785 9.718 9.648 9.576 9.501 9.424 9.345 9.265 9.182 9.098 9.013 8.926 8.838 8.749 8.659 8.568 8.476 8.384 8.291 8.197 8.103 8.009 7.915 7.821 7.726 7.632 7.537 7.443 7.349 7.255 7.161 7.068 6.975 6.883 6.791 6.699 6.608 6.518 6.428 6.339 6.251 6.163 6.076 5.99 5.904 5.819 5.735 5.652 5.57 5.488 5.408 5.328 5.249 5.171 5.094 5.017 4.942 4.867 4.794 4.721 4.649 4.578 4.508 4.439 4.37 4.303 4.236 4.17 4.106 4.042 3.979 3.916 3.855 3.794 3.735 3.676 3.618 3.561 3.504 3.449 3.394 3.34 3.287 3.234 3.183 3.132 3.082 3.032 2.983 2.936 2.888 2.842 2.796 2.751 2.707 2.663 2.62 2.577 2.536

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.36" PeakHeight="94.271" Num="3" Error="1.434">
-5.931 2.018 -0.358
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.36" EndFrequency="10.35" PeakHeight="433.053" Num="5" zHalfNm="307.465" Error="3.341">
-301.573 -5.253 5.255 -4.051 1.785
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="34.945" Depth="0.14"/>
<TopsideChapman PeakHeight="433.053" PeakDensity="1329063.2" PeakScaleHeight="93.48" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
