<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 15:10:00.000"
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="15.0">
<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: 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" >
2026.10.17 (290) 15:10:00</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">
FF202629010171510009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.305" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.547" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="566.952" 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="3.392" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.362" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="402.698" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.866" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.919" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="198.446" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="65.020" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="108.156" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="234.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.540" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="96">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 310.000 310.000 310.000 315.000 315.000 315.000 320.000 320.000 320.000 325.000 325.000 330.000 332.500 335.000 337.500 340.000 340.000 345.000 345.000 347.500 350.000 350.000 355.000 357.500 360.000 360.000 360.000 363.980 367.960 371.940 375.919 379.899 383.879 387.859 391.839 395.819 399.799 403.778 407.758 411.738 415.718 419.698 423.678 427.657 431.637 435.617 439.597 443.577 447.557 451.537 455.516 459.496 463.476 467.456 471.436 475.416 479.396 483.375 487.355 491.335 495.315 499.295 503.275 507.254 511.234 515.214 519.194 523.174 527.154 531.134 535.113 539.093 543.073 547.053 551.033 555.013 558.993 562.972 566.952 570.932 574.912 578.892 585.000 595.000 605.000 615.000 625.000 635.000 650.000 665.000 680.000 695.000 720.000 740.000 768.521
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 69 69 66 69 69 66 69 66 66 69 66 0 0 0 69 72 69 69 0 66 66 69 0 69 0 69 0 0 0 0 0 0 0 48 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
</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 -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 2.734375 -1.171875 2.734375 -0.390625 2.734375 1.953125 0.390625 2.734375 -2.734375 -0.390625 2.734375 2.734375 -2.734375 -1.953125 1.953125 -1.953125 -2.734375 2.734375 2.734375 -0.390625 -0.390625 0.390625 2.734375 -1.171875 -2.734375 2.734375 1.171875 0.390625 0.390625 -0.390625 -1.171875 -1.171875 1.171875 2.734375 2.734375 1.171875 2.734375 2.734375 -1.953125 1.953125 0.390625 -0.390625 2.734375 1.953125 2.734375 2.734375 -1.953125 1.171875 0.390625 -0.390625 -2.734375 0.390625 0.390625 2.734375
</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" >
89.484 90.0 95.0 100.0 105.0 110.0 111.541 113.082 114.623 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 402.698 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.282 2.935 3.281 3.392 3.269 3.269 3.392 3.404 3.559 3.702 3.841 3.978 4.115 4.254 4.395 4.539 4.686 4.836 4.99 5.147 5.306 5.468 5.631 5.794 5.958 6.122 6.284 6.444 6.603 6.76 6.914 7.066 7.215 7.362 7.506 7.648 7.787 7.924 8.059 8.192 8.323 8.452 8.579 8.704 8.827 8.949 9.069 9.188 9.305 9.42 9.533 9.644 9.754 9.86 9.964 10.065 10.162 10.254 10.34 10.419 10.489 10.549 10.597 10.63 10.648 10.65 10.65 10.645 10.637 10.624 10.608 10.587 10.563 10.535 10.504 10.47 10.432 10.391 10.347 10.301 10.251 10.2 10.145 10.089 10.03 9.969 9.906 9.841 9.775 9.706 9.637 9.565 9.493 9.419 9.344 9.267 9.19 9.112 9.033 8.953 8.873 8.792 8.71 8.628 8.545 8.462 8.379 8.295 8.211 8.128 8.044 7.96 7.875 7.791 7.707 7.624 7.54 7.456 7.373 7.29 7.208 7.125 7.043 6.962 6.88 6.799 6.719 6.639 6.56 6.481 6.402 6.325 6.247 6.171 6.094 6.019 5.944 5.869 5.796 5.723 5.65 5.578 5.507 5.437 5.367 5.298 5.229 5.161 5.094 5.028 4.962 4.897 4.833 4.769 4.706 4.643 4.582 4.521 4.46 4.401 4.342 4.283 4.226 4.169 4.113 4.057 4.002 3.948 3.894 3.841 3.789 3.737 3.686 3.635 3.585 3.536 3.488 3.44 3.392 3.345 3.299 3.254 3.209 3.164 3.12 3.077

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.392" PeakHeight="110.0" Num="3" Error="0.0">
-30.501 13.153 -3.168
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.392" EndFrequency="10.65" PeakHeight="402.698" Num="5" zHalfNm="250.866" Error="4.337">
-265.193 -38.54 22.767 -10.666 3.557
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.623" Depth="0.123"/>
<TopsideChapman PeakHeight="402.698" PeakDensity="1407227.0" PeakScaleHeight="108.156" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
