<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-03 -307 20:40:00.000"
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="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" >
2026.11.03 (307) 20:40:00</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">
FF202630711032040009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="11.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.596" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.855" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="5.500" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="425.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="425.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="123.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="491.147" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.225" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="426.113" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="372.160" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.282" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="3.150" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="82.018" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="32.008" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="41.218" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="125.020" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="105">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
595.000 595.000 595.000 595.000 605.000 607.500 610.000 615.000 620.000 622.500 625.000 625.000 635.000 630.000 635.000 635.000 628.438 621.875 615.313 608.750 602.188 595.625 589.063 582.500 575.938 569.375 562.813 556.250 549.688 543.125 536.563 530.000 523.438 516.875 510.313 503.750 497.188 490.625 484.063 477.500 470.938 464.375 457.813 451.250 444.688 438.125 431.563 425.000 425.000 426.667 428.333 430.000 430.000 430.000 430.000 435.000 440.000 440.000 442.500 445.000 445.000 445.000 445.000 445.000 445.000 445.000 450.000 451.667 453.333 455.000 456.000 457.000 458.000 459.000 460.000 460.000 460.000 460.000 460.000 465.000 465.000 465.000 467.000 469.000 471.000 473.000 475.000 475.000 475.000 477.500 480.000 485.000 487.919 491.147 494.735 498.746 503.262 508.382 514.238 520.999 528.895 538.235 549.457 563.193 580.395
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 54 54 60 0 0 54 0 54 0 54 54 51 51 54 57 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 63 0 0 0 51 0 0 0 0 0 0 72 69 0 0 0 0 0 0 0 0 57 57 60 60 60 57 0 48 0 0 0 0 51 45 0 0 51 48 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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 1.953125 1.953125 0.390625 -0.390625 -0.390625 2.734375 2.734375 -1.171875 0.390625 1.171875 -1.171875 -1.953125 -0.390625 1.953125 0.390625 -1.171875 -1.953125 -0.390625 2.734375 -2.734375 2.734375 -1.953125 -1.171875 1.953125 0.390625 -2.734375 -0.390625 -0.390625 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 -1.953125 2.734375 -1.171875 -1.171875 2.734375 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 -0.390625 -2.734375 -2.734375 0.390625 -2.734375 -1.171875 1.171875 2.734375 -1.171875 0.390625 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="48">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
115.000 105.000 109.167 113.333 117.500 121.667 125.833 130.000 130.000 130.000 130.000 128.750 127.500 126.250 125.000 125.417 125.833 126.250 126.667 127.083 127.500 127.917 128.333 128.750 129.167 129.583 130.000 130.000 126.667 123.333 120.000 120.000 120.000 120.000 120.000 120.000 120.000 117.500 115.000 115.000 115.000 115.000 120.000 120.000 120.000 120.000 120.000 120.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 0 0 0 0 0 63 69 69 69 66 63 66 60 60 63 63 0 60 57 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 -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 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -1.171875 -0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="187">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.085 95.0 100.0 105.0 110.0 115.0 120.0 123.622 125.0 130.0 135.0 137.244 140.0 145.0 150.0 150.866 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 426.113 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.817 1.061 1.186 1.225 1.204 1.138 1.06 1.06 1.06 1.06 1.06 1.093 1.154 1.215 1.225 1.273 1.344 1.436 1.557 1.718 1.91 2.11 2.3 2.476 2.641 2.797 2.946 3.09 3.23 3.367 3.502 3.635 3.768 3.9 4.033 4.165 4.298 4.432 4.568 4.704 4.843 4.984 5.126 5.272 5.42 5.571 5.726 5.885 6.048 6.215 6.388 6.566 6.75 6.941 7.139 7.346 7.562 7.788 8.025 8.276 8.541 8.823 9.123 9.445 9.791 10.161 10.553 10.95 11.301 11.493 11.5 11.49 11.45 11.382 11.287 11.169 11.031 10.874 10.7 10.513 10.313 10.104 9.886 9.662 9.432 9.199 8.963 8.725 8.487 8.249 8.012 7.778 7.545 7.315 7.089 6.867 6.648 6.434 6.224 6.02 5.82 5.625 5.435 5.25 5.07 4.895 4.725 4.56 4.401 4.246 4.096 3.95 3.81 3.674 3.542 3.415 3.292 3.173 3.058 2.947 2.84 2.737 2.637 2.541 2.448 2.358 2.272 2.189 2.108 2.031 1.956 1.884 1.815 1.748 1.683 1.621 1.561 1.503 1.448 1.394 1.343 1.293 1.245 1.199 1.155 1.112 1.071 1.031 0.993 0.956 0.92 0.886 0.853 0.822 0.791 0.762 0.733 0.706 0.68 0.655 0.63 0.607 0.584 0.563 0.542 0.522 0.502 0.484 0.466 0.448 0.432 0.416 0.4 0.385 0.371 0.357 0.344 0.331 0.319 0.307 0.295 0.284 0.274 0.264 0.254 0.244

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.225" PeakHeight="110.0" Num="3" Error="0.0">
-27.365 8.966 -1.516
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.225" EndFrequency="11.5" PeakHeight="426.113" Num="5" zHalfNm="372.16" Error="18.851">
-210.037 -101.483 46.64 -3.048 -7.319
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.866" Depth="0.165"/>
<TopsideChapman PeakHeight="426.113" PeakDensity="1640818.9" PeakScaleHeight="41.218" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
