<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 16:00:00.000"
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="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) 16:00:00</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">
FF202629010171600009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.058" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.201" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.850" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.850" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="340.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="340.000" 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="705.000" 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="3.336" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.336" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="460.242" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="289.111" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.325" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="216.565" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="68.109" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="119.444" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="281.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="90">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
340.000 350.000 355.000 360.000 365.000 370.000 380.000 385.000 390.000 400.000 400.000 405.000 410.000 410.000 416.250 422.500 428.750 435.000 430.000 435.000 440.000 440.000 440.000 445.000 455.000 460.000 465.000 460.000 465.000 469.596 474.192 478.788 483.384 487.979 492.575 497.171 501.767 506.363 510.959 515.555 520.151 524.747 529.342 533.938 538.534 543.130 547.726 552.322 556.918 561.514 566.110 570.706 575.301 579.897 584.493 589.089 593.685 598.281 602.877 607.473 612.069 616.664 621.260 625.856 630.452 635.048 639.644 644.240 648.836 653.432 658.027 662.623 667.219 671.815 676.411 681.007 685.603 690.199 694.795 699.391 705.000 715.000 725.000 735.000 745.000 760.000 775.000 790.000 810.000 834.676
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 66 0 0 0 60 69 66 66 51 66 66 66 60 0 0 0 54 69 72 72 0 0 0 57 57 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 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 2.734375 -2.734375 1.953125 1.953125 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 0.390625 2.734375 -0.390625 -0.390625 1.171875 -2.734375 -1.953125 -0.390625 1.953125 -1.171875 1.953125 -1.953125 2.734375 -0.390625 1.953125 -0.390625 -0.390625 1.171875 -2.734375 -1.171875 -1.953125 -1.171875 2.734375 -1.953125 -0.390625 -1.171875 -1.953125 -1.171875 -1.953125 2.734375 2.734375 -1.171875 -1.171875 -0.390625 -0.390625 -2.734375 -1.171875 -1.953125 2.734375 2.734375 2.734375 -2.734375 -2.734375 0.390625
</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" >
89.492 90.0 95.0 100.0 105.0 110.0 111.772 113.544 115.0 115.316 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 460.242 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.244 2.887 3.227 3.336 3.213 3.213 3.314 3.336 3.458 3.579 3.695 3.807 3.918 4.028 4.138 4.249 4.36 4.472 4.584 4.698 4.813 4.928 5.044 5.161 5.278 5.395 5.512 5.629 5.746 5.863 5.979 6.094 6.208 6.322 6.435 6.546 6.657 6.767 6.876 6.984 7.091 7.197 7.302 7.406 7.51 7.612 7.714 7.815 7.916 8.016 8.115 8.214 8.312 8.41 8.507 8.604 8.701 8.797 8.893 8.989 9.084 9.179 9.274 9.368 9.462 9.555 9.648 9.739 9.828 9.915 9.998 10.076 10.147 10.209 10.257 10.288 10.3 10.3 10.298 10.293 10.285 10.273 10.259 10.241 10.22 10.196 10.17 10.141 10.109 10.075 10.038 10.0 9.958 9.915 9.87 9.823 9.774 9.723 9.67 9.616 9.56 9.503 9.445 9.385 9.324 9.261 9.198 9.134 9.068 9.002 8.935 8.867 8.798 8.729 8.659 8.589 8.518 8.446 8.374 8.302 8.23 8.157 8.084 8.011 7.937 7.864 7.79 7.717 7.643 7.569 7.496 7.422 7.349 7.276 7.203 7.13 7.057 6.985 6.912 6.84 6.769 6.698 6.627 6.556 6.486 6.416 6.346 6.277 6.208 6.14 6.072 6.005 5.938 5.871 5.805 5.74 5.674 5.61 5.546 5.482 5.419 5.357 5.295 5.233 5.172 5.112 5.052 4.992 4.934 4.875 4.818 4.76 4.704 4.648 4.592 4.537 4.482 4.428 4.375 4.322 4.27 4.218 4.167 4.116 4.066 4.016

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.336" PeakHeight="110.0" Num="3" Error="0.0">
-30.462 13.094 -3.14
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.336" EndFrequency="10.3" PeakHeight="460.242" Num="5" zHalfNm="289.111" Error="4.497">
-297.8 -76.124 38.867 -13.801 3.932
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="5.316" Depth="0.123"/>
<TopsideChapman PeakHeight="460.242" PeakDensity="1316253.1" PeakScaleHeight="119.444" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
