<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 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" >
2026.10.19 (292) 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">
FF202629210191510009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.563" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.347" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.800" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.800" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="330.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="330.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="501.671" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.390" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.800" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.800" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.361" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="365.467" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="265.574" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.919" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="129.975" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="53.177" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="74.169" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="179.270" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="114">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
330.000 330.000 332.500 335.000 335.000 340.000 340.000 340.000 342.500 345.000 345.000 345.000 345.000 350.000 350.000 350.000 350.000 355.000 355.000 355.000 355.000 355.000 360.000 360.000 360.000 360.000 360.000 360.000 360.000 365.000 365.000 370.000 371.761 373.522 375.282 377.043 378.804 380.565 382.325 384.086 385.847 387.608 389.368 391.129 392.890 394.651 396.411 398.172 399.933 401.694 403.454 405.215 406.976 408.737 410.497 412.258 414.019 415.780 417.540 419.301 421.062 422.823 424.583 426.344 428.105 429.866 431.626 433.387 435.148 436.909 438.669 440.430 442.191 443.952 445.712 447.473 449.234 450.995 452.755 454.516 456.277 458.038 459.798 461.559 463.320 465.081 466.841 468.602 470.363 472.124 473.884 475.645 477.406 479.167 480.927 482.688 484.449 486.210 487.970 490.909 494.140 497.709 501.671 506.095 511.067 515.000 525.000 530.000 540.000 550.000 560.000 575.000 595.000 618.476
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 66 0 63 63 60 63 63 0 66 66 66 63 69 72 72 69 69 72 75 75 0 72 75 75 75 0 75 69 75 72 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 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 -2.734375 -0.390625 -0.390625 -2.734375 -1.953125 -0.390625 0.390625 -0.390625 2.734375 1.171875 1.953125 2.734375 0.390625 -1.953125 -0.390625 -1.171875 -2.734375 1.953125 -1.953125 -2.734375 -1.953125 -0.390625 -2.734375 -2.734375 -0.390625 0.390625 1.171875 2.734375 1.171875 -0.390625 2.734375 1.171875 -0.390625 -2.734375 2.734375 1.171875 -1.953125 0.390625 1.171875 2.734375 -1.953125 -0.390625 2.734375 1.953125 1.171875 -0.390625 -2.734375 2.734375 -1.171875 -2.734375 -1.171875 0.390625 -2.734375 -0.390625 -1.953125 2.734375 -0.390625 2.734375 -2.734375 1.953125 2.734375 1.171875 1.171875 1.953125 0.390625 -2.734375 0.390625 0.390625 2.734375 -0.390625 -0.390625 -1.953125 1.953125 0.390625 1.171875 1.953125 -0.390625 2.734375 2.734375 2.734375 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 95.0 100.0 105.0 110.0 111.549 113.099 114.648 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 365.467 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.281 2.934 3.28 3.39 3.267 3.267 3.39 3.405 3.597 3.771 3.934 4.09 4.241 4.388 4.533 4.676 4.819 4.96 5.102 5.244 5.386 5.529 5.673 5.818 5.965 6.113 6.263 6.415 6.569 6.725 6.884 7.045 7.209 7.376 7.546 7.719 7.896 8.076 8.259 8.445 8.635 8.829 9.025 9.225 9.427 9.631 9.836 10.041 10.245 10.444 10.638 10.821 10.991 11.142 11.268 11.365 11.426 11.45 11.45 11.446 11.432 11.409 11.377 11.336 11.288 11.232 11.168 11.098 11.022 10.94 10.853 10.76 10.662 10.561 10.455 10.346 10.233 10.117 9.999 9.878 9.755 9.631 9.504 9.377 9.248 9.118 8.987 8.856 8.725 8.593 8.461 8.329 8.198 8.067 7.936 7.806 7.677 7.548 7.42 7.294 7.168 7.043 6.92 6.798 6.677 6.557 6.439 6.322 6.206 6.092 5.98 5.869 5.759 5.651 5.544 5.44 5.336 5.234 5.134 5.035 4.938 4.843 4.749 4.656 4.565 4.476 4.388 4.301 4.216 4.133 4.051 3.971 3.892 3.814 3.738 3.663 3.589 3.517 3.447 3.377 3.309 3.242 3.176 3.112 3.049 2.987 2.926 2.867 2.808 2.751 2.695 2.64 2.586 2.533 2.481 2.43 2.381 2.332 2.284 2.237 2.191 2.146 2.102 2.058 2.016 1.974 1.934 1.894 1.855 1.816 1.779 1.742 1.706 1.671 1.636 1.602 1.569 1.537 1.505 1.474 1.443 1.413 1.384 1.355 1.327 1.3

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.39" PeakHeight="110.0" Num="3" Error="0.0">
-30.5 13.151 -3.167
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.39" EndFrequency="11.45" PeakHeight="365.467" Num="5" zHalfNm="265.574" Error="2.895">
-206.237 -61.319 14.925 2.038 -0.226
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.648" Depth="0.123"/>
<TopsideChapman PeakHeight="365.467" PeakDensity="1626581.9" PeakScaleHeight="74.169" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
