<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-17 -290 14:20:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 100%</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) 14:20:00</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">
FF202629010171420009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="26" >
<URSI ID="00" Val="11.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.525" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.160" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="6.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="315.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="315.000" 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="11.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.000" 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="3.395" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="6.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.363" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="368.454" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.498" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.564" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="154.497" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="61.196" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="85.567" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="190.370" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.410" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 11.5 11.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
315.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 320.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 325.000 327.468 329.937 332.405 334.873 337.342 339.810 342.278 344.747 347.215 349.684 352.152 354.620 357.089 359.557 362.025 364.494 366.962 369.430 371.899 374.367 376.835 379.304 381.772 384.241 386.709 389.177 391.646 394.114 396.582 399.051 401.519 403.987 406.456 408.924 411.392 413.861 416.329 418.797 421.266 423.734 426.203 428.671 431.139 433.608 436.076 438.544 441.013 443.481 445.949 448.418 450.886 453.354 455.823 458.291 460.759 463.228 465.696 468.165 470.633 473.101 475.570 478.038 480.506 482.975 485.443 487.911 490.380 492.848 495.316 497.785 500.253 502.722 505.190 507.658 510.127 512.595 515.063 517.532 520.000 525.000 535.000 545.573 558.048 572.987 591.200 613.898 642.968 681.533
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 63 66 66 66 66 66 66 66 69 69 69 72 72 72 72 72 72 72 72 69 69 0 0 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 51 51 51 48 48 48 48 45 42 42
</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 -2.734375 -1.953125 -2.734375 -1.953125 1.171875 -1.953125 -1.171875 1.953125 -1.171875 -1.953125 1.171875 2.734375 -0.390625 -2.734375 -2.734375 1.953125 -1.171875 -1.953125 1.171875 1.171875 2.734375 -0.390625 1.171875 2.734375 1.171875 0.390625 -1.171875 -0.390625 -1.171875 -2.734375 1.171875 1.953125 0.390625 0.390625 1.953125 -1.171875 2.734375 -1.953125 -1.171875 -1.171875 0.390625 0.390625 1.953125 -1.171875 -2.734375 0.390625 -1.953125 -1.171875 2.734375 1.953125 -0.390625 -1.953125 1.171875 1.953125 1.953125 -2.734375 1.953125 1.171875 2.734375 -1.171875 -0.390625 -0.390625 -1.953125 2.734375 1.953125 1.171875 -0.390625 1.953125 0.390625 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875
</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" >
89.483 90.0 95.0 100.0 105.0 110.0 111.529 113.057 114.586 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 368.454 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.241 2.284 2.938 3.284 3.395 3.272 3.272 3.395 3.411 3.599 3.778 3.951 4.12 4.288 4.455 4.622 4.788 4.955 5.123 5.292 5.461 5.632 5.803 5.976 6.149 6.324 6.499 6.676 6.853 7.031 7.21 7.389 7.569 7.75 7.931 8.113 8.295 8.477 8.659 8.841 9.023 9.205 9.386 9.566 9.744 9.921 10.096 10.267 10.435 10.598 10.755 10.904 11.043 11.171 11.285 11.381 11.459 11.513 11.544 11.55 11.55 11.544 11.53 11.51 11.482 11.449 11.409 11.363 11.312 11.255 11.193 11.127 11.056 10.981 10.901 10.819 10.732 10.643 10.55 10.455 10.357 10.257 10.155 10.05 9.944 9.837 9.728 9.617 9.506 9.394 9.281 9.167 9.053 8.938 8.823 8.708 8.593 8.477 8.362 8.247 8.133 8.019 7.905 7.791 7.679 7.567 7.455 7.345 7.235 7.126 7.017 6.91 6.804 6.698 6.594 6.491 6.388 6.287 6.187 6.088 5.99 5.894 5.798 5.704 5.61 5.518 5.427 5.338 5.249 5.162 5.076 4.991 4.907 4.824 4.743 4.662 4.583 4.505 4.429 4.353 4.278 4.205 4.133 4.062 3.991 3.922 3.855 3.788 3.722 3.657 3.593 3.531 3.469 3.408 3.349 3.29 3.232 3.175 3.12 3.065 3.011 2.958 2.905 2.854 2.803 2.754 2.705 2.657 2.61 2.564 2.518 2.473 2.429 2.386 2.344 2.302 2.261 2.22 2.181 2.142 2.103 2.066 2.029 1.993 1.957 1.922 1.887

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.395" PeakHeight="110.0" Num="3" Error="0.0">
-30.503 13.156 -3.17
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.395" EndFrequency="11.55" PeakHeight="368.454" Num="5" zHalfNm="251.498" Error="2.513">
-225.844 -41.977 15.603 -2.368 0.718
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.586" Depth="0.123"/>
<TopsideChapman PeakHeight="368.454" PeakDensity="1655117.9" PeakScaleHeight="85.567" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
