<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 19:20:00.000"
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="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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: 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" >
2026.11.02 (306) 19:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630611021920009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.508" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.719" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="403.333" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="403.333" 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="10.900" 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="2.403" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="415.667" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="344.519" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.792" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="104.762" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="49.087" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="63.207" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="100.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.490" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="137">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 11.5 11.55 11.6 11.65 11.7 11.75 11.8 11.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
460.000 465.000 465.000 470.000 475.000 480.000 485.000 490.000 495.000 500.000 505.000 503.436 501.872 500.308 498.744 497.179 495.615 494.051 492.487 490.923 489.359 487.795 486.231 484.667 483.103 481.538 479.974 478.410 476.846 475.282 473.718 472.154 470.590 469.026 467.462 465.897 464.333 462.769 461.205 459.641 458.077 456.513 454.949 453.385 451.821 450.256 448.692 447.128 445.564 444.000 442.436 440.872 439.308 437.744 436.179 434.615 433.051 431.487 429.923 428.359 426.795 425.231 423.667 422.103 420.538 418.974 417.410 415.846 414.282 412.718 411.154 409.590 408.026 406.462 404.897 403.333 406.667 410.000 410.000 410.000 410.000 415.000 415.000 415.000 415.000 425.000 425.000 425.000 425.000 430.000 432.000 434.000 436.000 438.000 440.000 440.000 440.000 442.500 445.000 445.000 447.500 450.000 455.000 455.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 475.000 480.000 480.000 485.000 485.000 490.000 490.000 500.000 505.000 505.000 510.000 510.000 520.000 525.000 525.000 530.000 540.000 545.000 550.000 560.000 570.000 580.000 595.000 613.460 637.910 671.828
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 51 51 51 0 48 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51 0 0 0 0 0 0 0 0 60 0 0 0 66 63 0 0 0 0 60 63 60 63 0 0 60 60 54 57 54 57 57 57 57 51 54 54 57 54 54 57 54 54 57 54 57 57 57 57 51 48 48
</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 -1.171875 -0.390625 -1.171875 2.734375 -2.734375 -0.390625 1.171875 0.390625 -1.953125 -2.734375 -0.390625 2.734375 -1.171875 0.390625 -1.953125 -0.390625 0.390625 -1.171875 0.390625 -2.734375 -1.953125 -2.734375 -1.171875 -2.734375 -1.171875 1.953125 1.953125 1.171875 -1.171875 1.953125 -0.390625 2.734375 0.390625 -0.390625 1.171875 1.953125 2.734375 -2.734375 0.390625 -0.390625 1.171875 1.171875 -1.953125 -0.390625 -0.390625 -2.734375 -0.390625 2.734375 -1.171875 -2.734375 2.734375 0.390625 -0.390625 -1.171875 -1.171875 1.171875 -0.390625 1.171875 -2.734375 -2.734375 -0.390625 2.734375 -1.953125 -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 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -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" >
89.66 90.0 95.0 100.0 105.0 110.0 115.0 116.074 120.0 122.147 125.0 128.221 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 415.667 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.229 1.613 2.081 2.325 2.403 2.318 2.277 2.277 2.277 2.336 2.403 2.476 2.662 2.823 2.966 3.096 3.218 3.333 3.443 3.55 3.653 3.754 3.854 3.953 4.05 4.148 4.245 4.342 4.44 4.538 4.637 4.737 4.838 4.941 5.045 5.152 5.26 5.372 5.486 5.604 5.725 5.85 5.98 6.116 6.257 6.406 6.563 6.729 6.907 7.098 7.306 7.534 7.789 8.079 8.414 8.811 9.284 9.815 10.322 10.731 11.038 11.269 11.444 11.578 11.68 11.755 11.807 11.838 11.85 11.85 11.845 11.826 11.793 11.749 11.693 11.625 11.548 11.461 11.366 11.262 11.151 11.033 10.909 10.779 10.645 10.506 10.363 10.216 10.066 9.914 9.76 9.604 9.446 9.288 9.128 8.969 8.808 8.648 8.489 8.33 8.171 8.013 7.857 7.702 7.548 7.395 7.244 7.095 6.947 6.802 6.658 6.516 6.376 6.239 6.103 5.97 5.839 5.71 5.583 5.458 5.336 5.216 5.098 4.982 4.869 4.757 4.648 4.541 4.437 4.334 4.233 4.135 4.039 3.944 3.852 3.762 3.673 3.587 3.502 3.419 3.338 3.259 3.182 3.106 3.032 2.96 2.889 2.82 2.753 2.687 2.622 2.56 2.498 2.438 2.379 2.322 2.266 2.212 2.158 2.106 2.055 2.006 1.957 1.91 1.864 1.819 1.775 1.732 1.69 1.649 1.609 1.57 1.532 1.494 1.458 1.423 1.388 1.354 1.322 1.289 1.258 1.227 1.198 1.168 1.14 1.112 1.085

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.403" PeakHeight="110.0" Num="3" Error="0.0">
-29.604 11.855 -2.591
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.403" EndFrequency="11.85" PeakHeight="415.667" Num="5" zHalfNm="344.519" Error="13.878">
-231.118 -63.18 -16.745 31.61 -8.013
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="18.221" Depth="0.126"/>
<TopsideChapman PeakHeight="415.667" PeakDensity="1742214.6" PeakScaleHeight="63.207" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
