<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-15 -288 20:50:00.000"
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" >
2026.10.15 (288) 20:50:00</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">
FF202628810152050009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.466" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.396" 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="10.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="325.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="325.000" 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="9.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="511.144" 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="1.024" 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="/" />
<URSI ID="92" Val="419.078" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="310.848" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.245" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="154.646" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="45.028" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="81.556" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="147.720" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.420" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="89">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
325.000 325.000 326.250 327.500 328.750 330.000 335.000 336.000 337.000 338.000 339.000 340.000 345.000 345.000 345.000 345.000 345.000 350.000 350.000 355.000 355.000 355.000 358.003 361.006 364.008 367.011 370.014 373.017 376.019 379.022 382.025 385.028 388.030 391.033 394.036 397.039 400.042 403.044 406.047 409.050 412.053 415.055 418.058 421.061 424.064 427.066 430.069 433.072 436.075 439.078 442.080 445.083 448.086 451.089 454.091 457.094 460.097 463.100 466.102 469.105 472.108 475.111 478.113 481.116 484.119 487.122 490.125 493.127 496.130 499.133 502.136 505.138 508.141 511.144 514.147 520.000 530.000 535.000 545.000 555.000 570.000 580.000 595.000 610.000 625.000 645.000 670.000 695.000 724.116
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 75 0 0 0 0 78 0 0 0 0 75 75 78 75 0 0 75 72 75 75 75 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" >
-1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 1.953125 1.953125 1.953125 1.171875 2.734375 -1.953125 0.390625 -0.390625 -0.390625 1.953125 1.953125 -0.390625 -1.171875 1.953125 2.734375 1.171875 -1.953125 2.734375 -1.953125 -0.390625 -0.390625 -1.171875 -0.390625 1.171875 -0.390625 1.171875 -2.734375 -1.171875 2.734375 -0.390625 -2.734375 -1.171875 -1.171875 -1.953125 1.171875 -1.171875 -2.734375 -0.390625 -0.390625 0.390625 1.953125 -2.734375 -0.390625 2.734375 -1.953125 -1.953125 -2.734375 1.171875 -1.171875 -1.953125 2.734375 1.953125 -1.953125 0.390625 0.390625 -0.390625 2.734375 -1.171875 0.390625 2.734375 2.734375
</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" >
90.247 95.0 100.0 105.0 110.0 115.0 120.0 125.0 126.459 130.0 135.0 140.0 142.917 145.0 150.0 155.0 159.376 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 419.078 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.682 0.887 0.991 1.024 1.007 0.953 0.858 0.821 0.821 0.821 0.821 0.821 0.847 0.908 0.97 1.024 1.039 1.15 1.259 1.367 1.479 1.595 1.716 1.844 1.98 2.125 2.279 2.443 2.619 2.807 3.007 3.219 3.445 3.682 3.931 4.19 4.458 4.733 5.013 5.297 5.582 5.867 6.151 6.431 6.706 6.976 7.239 7.495 7.742 7.981 8.21 8.428 8.637 8.834 9.02 9.195 9.357 9.507 9.645 9.771 9.883 9.982 10.068 10.141 10.2 10.245 10.277 10.295 10.3 10.3 10.295 10.282 10.263 10.237 10.205 10.167 10.123 10.074 10.019 9.96 9.896 9.828 9.756 9.68 9.6 9.518 9.432 9.343 9.252 9.159 9.063 8.966 8.867 8.766 8.664 8.56 8.456 8.351 8.245 8.138 8.031 7.924 7.816 7.708 7.6 7.493 7.385 7.278 7.171 7.064 6.958 6.853 6.748 6.644 6.54 6.437 6.335 6.234 6.134 6.035 5.937 5.84 5.743 5.648 5.554 5.461 5.369 5.278 5.189 5.1 5.013 4.926 4.841 4.757 4.675 4.593 4.513 4.433 4.355 4.278 4.202 4.128 4.054 3.982 3.911 3.84 3.771 3.703 3.637 3.571 3.506 3.442 3.38 3.318 3.258 3.198 3.14 3.082 3.026 2.97 2.915 2.862 2.809 2.757 2.706 2.656 2.607 2.559 2.511 2.465 2.419 2.374 2.33 2.286 2.244 2.202 2.161 2.12 2.081 2.042 2.004 1.966 1.929 1.893 1.858 1.823

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.024" PeakHeight="110.0" Num="3" Error="0.0">
-26.609 8.11 -1.254
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.024" EndFrequency="10.3" PeakHeight="419.078" Num="5" zHalfNm="310.848" Error="3.713">
-269.169 15.181 -8.669 1.875 1.08
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="49.376" Depth="0.203"/>
<TopsideChapman PeakHeight="419.078" PeakDensity="1316253.1" PeakScaleHeight="81.556" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
