<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-01 -305 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="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 22 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 80% PACIFIC flags: Moderate F-spread, 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" >
2026.11.01 (305) 22:00:00</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">
FF202630511012200009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="8.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.075" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.019" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="450.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="450.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="600.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="547.328" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="448.377" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.572" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="145.521" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="26.645" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.579" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="150.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="115">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.5 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 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
450.000 450.000 451.250 452.500 453.750 455.000 455.000 455.000 455.000 455.000 455.000 460.000 460.658 461.316 461.974 462.632 463.289 463.947 464.605 465.263 465.921 466.579 467.237 467.895 468.553 469.211 469.868 470.526 471.184 471.842 472.500 473.158 473.816 474.474 475.132 475.789 476.447 477.105 477.763 478.421 479.079 479.737 480.395 481.053 481.711 482.368 483.026 483.684 484.342 485.000 485.000 485.000 485.000 487.500 490.000 490.000 492.500 495.000 497.500 500.000 500.000 500.000 505.000 505.000 508.333 511.667 515.000 518.333 521.667 525.000 526.667 528.333 530.000 533.333 536.667 540.000 542.500 545.000 550.000 545.000 550.000 555.000 555.000 565.000 570.000 565.000 570.000 580.000 580.000 590.000 595.000 600.000 600.000 610.000 615.000 622.000 629.000 636.000 643.000 650.000 665.000 680.000 683.952 688.166 692.670 697.494 702.675 708.253 714.275 720.797 727.885 735.613 744.075 753.378 763.656
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 57 0 0 0 66 57 60 57 0 60 63 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 57 60 0 63 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 63 0 0 60 0 60 63 60 63 54 63 69 66 66 66 63 66 69 66 63 63 66 63 0 0 0 0 54 0 60 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" >
-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 1.171875 0.390625 0.390625 -0.390625 1.171875 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 -0.390625 -1.953125 -0.390625 0.390625 0.390625 -1.171875 2.734375 0.390625 0.390625 -1.171875 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 -1.171875 -1.171875 0.390625 0.390625 0.390625 -1.171875 0.390625 -1.953125 1.171875 0.390625 1.953125 1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 0.390625 1.171875 1.171875 0.390625 1.171875 1.171875 0.390625 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 1.171875 2.734375 1.171875 2.734375 1.171875 1.171875 1.171875 0.390625 0.390625 0.390625 0.390625 2.734375 -2.734375 -1.953125 -1.953125 -2.734375 1.171875 -0.390625 2.734375 1.171875 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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 141.802 145.0 150.0 155.0 160.0 165.0 170.0 173.604 175.0 180.0 185.0 190.0 195.0 200.0 205.0 205.406 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 547.328 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.342 0.326 0.303 0.269 0.222 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.207 0.231 0.255 0.279 0.304 0.328 0.352 0.354 0.395 0.44 0.487 0.534 0.583 0.634 0.686 0.741 0.798 0.858 0.919 0.984 1.051 1.121 1.194 1.27 1.349 1.431 1.517 1.606 1.699 1.795 1.896 2.0 2.108 2.22 2.336 2.456 2.581 2.709 2.842 2.979 3.121 3.267 3.416 3.571 3.729 3.891 4.056 4.226 4.398 4.574 4.753 4.934 5.117 5.301 5.487 5.673 5.859 6.043 6.227 6.408 6.585 6.759 6.927 7.089 7.244 7.391 7.528 7.655 7.771 7.875 7.966 8.042 8.104 8.151 8.183 8.198 8.2 8.199 8.192 8.178 8.157 8.131 8.098 8.061 8.018 7.97 7.917 7.861 7.8 7.735 7.668 7.596 7.522 7.446 7.367 7.285 7.202 7.117 7.03 6.942 6.852 6.762 6.67 6.578 6.485 6.392 6.299 6.205 6.111 6.017 5.923 5.83 5.737 5.644 5.551 5.459 5.368 5.277 5.187 5.098 5.01 4.922 4.835 4.75 4.665 4.581 4.498 4.416 4.335 4.255 4.177 4.099 4.022 3.947 3.872 3.799 3.727 3.656 3.586 3.517 3.449 3.382 3.317 3.252 3.189 3.127 3.065 3.005 2.946 2.888 2.831 2.775 2.72 2.666 2.612 2.56 2.509 2.459 2.41 2.361 2.314 2.267 2.222 2.177 2.133 2.09 2.047 2.006

</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="8.2" PeakHeight="547.328" Num="5" zHalfNm="448.377" Error="8.589">
-324.026 -30.072 11.38 0.662 0.134
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="95.406" Depth="0.154"/>
<TopsideChapman PeakHeight="547.328" PeakDensity="834243.2" PeakScaleHeight="74.579" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
