<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, 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" >
2026.11.01 (305) 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">
FF202630511012040009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="10.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.315" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.422" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="3.250" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="300.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="300.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="110.000" 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="9.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="565.000" 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="1.222" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="439.245" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="332.102" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.282" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.550" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="153.247" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="46.278" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="77.499" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="163.660" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.640" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="126">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
300.000 302.500 305.000 305.000 305.000 310.000 310.000 310.000 310.000 312.372 314.744 317.115 319.487 321.859 324.231 326.603 328.974 331.346 333.718 336.090 338.462 340.833 343.205 345.577 347.949 350.321 352.692 355.064 357.436 359.808 362.179 364.551 366.923 369.295 371.667 374.038 376.410 378.782 381.154 383.526 385.897 388.269 390.641 393.013 395.385 397.756 400.128 402.500 404.872 407.244 409.615 411.987 414.359 416.731 419.103 421.474 423.846 426.218 428.590 430.962 433.333 435.705 438.077 440.449 442.821 445.192 447.564 449.936 452.308 454.679 457.051 459.423 461.795 464.167 466.538 468.910 471.282 473.654 476.026 478.397 480.769 483.141 485.513 487.885 490.256 492.628 495.000 497.500 500.000 500.000 505.000 510.000 510.000 510.000 515.000 520.000 520.000 525.000 530.000 530.000 535.000 535.000 540.000 542.500 545.000 555.000 555.000 560.000 562.500 565.000 565.000 577.500 590.000 595.000 600.000 605.000 610.693 616.818 623.427 630.580 638.346 646.808 656.064 666.231 677.450 689.894
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 66 72 78 78 72 75 81 78 0 78 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 0 0 0 54 63 0 51 60 66 63 57 63 0 0 63 57 51 0 0 63 51 57 60 0 57 0 0 51 54 0 57 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" >
-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 2.734375 -2.734375 -1.171875 1.171875 -2.734375 2.734375 2.734375 -1.171875 -1.171875 2.734375 0.390625 -1.953125 -1.953125 -0.390625 -0.390625 -1.953125 -1.953125 -0.390625 -0.390625 2.734375 0.390625 0.390625 0.390625 -1.953125 2.734375 0.390625 -1.171875 -0.390625 -2.734375 2.734375 1.953125 -0.390625 2.734375 -2.734375 -1.953125 -0.390625 1.171875 1.953125 2.734375 2.734375 2.734375 0.390625 2.734375 1.953125 2.734375 -2.734375 -1.171875 -1.953125 -1.171875 1.171875 -0.390625 -1.171875 -1.171875 -1.953125 -0.390625 -1.953125 -0.390625 -1.171875 -1.171875 -2.734375 -1.171875 1.953125 -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 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 2.734375 -2.734375 -2.734375 -0.390625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
115.000 125.000 110.000 115.000 120.000 120.000 119.444 118.889 118.333 117.778 117.222 116.667 116.111 115.556 115.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 51 54 0 54 51 0 0 0 0 0 0 0 0 51
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -2.734375 -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" >
90.086 95.0 100.0 105.0 110.0 115.0 120.0 123.647 125.0 130.0 135.0 137.295 140.0 145.0 150.0 150.942 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 439.245 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.815 1.059 1.183 1.222 1.201 1.136 1.057 1.057 1.057 1.057 1.057 1.09 1.15 1.211 1.222 1.327 1.44 1.548 1.655 1.764 1.878 1.997 2.123 2.257 2.399 2.55 2.71 2.88 3.059 3.245 3.439 3.637 3.84 4.044 4.25 4.457 4.662 4.867 5.07 5.272 5.472 5.67 5.866 6.061 6.254 6.445 6.635 6.824 7.011 7.197 7.382 7.567 7.75 7.932 8.113 8.293 8.472 8.65 8.826 9.0 9.172 9.342 9.508 9.669 9.824 9.972 10.11 10.235 10.344 10.434 10.5 10.539 10.55 10.55 10.544 10.531 10.509 10.48 10.444 10.401 10.352 10.297 10.236 10.17 10.098 10.022 9.942 9.857 9.769 9.677 9.583 9.485 9.384 9.281 9.176 9.069 8.96 8.85 8.738 8.625 8.512 8.397 8.282 8.166 8.05 7.934 7.818 7.702 7.586 7.47 7.355 7.24 7.125 7.012 6.899 6.786 6.675 6.565 6.455 6.346 6.239 6.132 6.027 5.923 5.82 5.718 5.617 5.518 5.42 5.323 5.228 5.133 5.041 4.949 4.859 4.77 4.682 4.596 4.511 4.427 4.345 4.263 4.184 4.105 4.028 3.952 3.877 3.804 3.732 3.661 3.591 3.522 3.455 3.389 3.324 3.26 3.197 3.135 3.075 3.015 2.957 2.9 2.843 2.788 2.734 2.681 2.628 2.577 2.527 2.477 2.429 2.381 2.335 2.289 2.244 2.2 2.157 2.114 2.073 2.032 1.992 1.953 1.914 1.877 1.84 1.803

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.222" PeakHeight="110.0" Num="3" Error="0.0">
-27.355 8.954 -1.513
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.222" EndFrequency="10.55" PeakHeight="439.245" Num="5" zHalfNm="332.102" Error="6.454">
-271.486 -32.852 24.376 -13.708 5.367
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.942" Depth="0.165"/>
<TopsideChapman PeakHeight="439.245" PeakDensity="1380924.4" PeakScaleHeight="77.499" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
