<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-19 -292 15:40:00.000"
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) 15:40:00</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">
FF202629210191540009039031101000005015000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.378" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.748" 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="11.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="335.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="335.000" 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="10.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="552.329" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.363" 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="4.348" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="396.478" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.712" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.159" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="166.543" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="63.224" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="92.702" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="213.760" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="104">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
335.000 335.000 335.000 335.000 340.000 340.000 340.000 340.000 342.500 345.000 345.000 347.500 350.000 355.000 355.000 360.000 360.000 365.000 365.000 370.000 370.000 375.000 375.000 377.642 380.284 382.927 385.569 388.211 390.853 393.496 396.138 398.780 401.422 404.064 406.707 409.349 411.991 414.633 417.276 419.918 422.560 425.202 427.844 430.487 433.129 435.771 438.413 441.055 443.698 446.340 448.982 451.624 454.267 456.909 459.551 462.193 464.835 467.478 470.120 472.762 475.404 478.047 480.689 483.331 485.973 488.615 491.258 493.900 496.542 499.184 501.827 504.469 507.111 509.753 512.395 515.038 517.680 520.322 522.964 525.607 528.249 530.891 533.533 536.175 538.818 541.460 544.102 546.583 549.312 552.329 555.682 559.430 563.648 568.429 575.000 580.000 590.000 595.000 605.000 620.000 635.000 655.000 685.000 722.098
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 66 66 66 66 66 63 54 0 60 51 0 66 0 0 0 0 69 72 66 72 63 63 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 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 -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 -2.734375 -0.390625 1.953125 -0.390625 2.734375 1.171875 -2.734375 -2.734375 -0.390625 -2.734375 1.171875 0.390625 0.390625 -1.953125 0.390625 -1.953125 -0.390625 -1.953125 -2.734375 -1.171875 2.734375 -1.171875 -2.734375 1.953125 0.390625 2.734375 -2.734375 -1.171875 1.953125 -2.734375 0.390625 1.953125 -1.953125 0.390625 -2.734375 1.953125 1.953125 -1.171875 -2.734375 -1.953125 2.734375 2.734375 0.390625 -2.734375 -1.953125 1.171875 -1.953125 1.953125
</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" >
89.487 90.0 95.0 100.0 105.0 110.0 111.662 113.323 114.985 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 396.478 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.262 2.91 3.253 3.363 3.24 3.24 3.363 3.364 3.534 3.696 3.853 4.007 4.158 4.307 4.455 4.602 4.748 4.894 5.039 5.184 5.33 5.475 5.62 5.766 5.912 6.058 6.204 6.351 6.498 6.646 6.793 6.942 7.091 7.24 7.39 7.54 7.691 7.842 7.994 8.146 8.299 8.452 8.606 8.76 8.914 9.069 9.223 9.378 9.532 9.686 9.838 9.989 10.139 10.285 10.428 10.566 10.698 10.822 10.935 11.036 11.12 11.185 11.229 11.249 11.25 11.248 11.241 11.227 11.208 11.183 11.153 11.117 11.077 11.032 10.983 10.929 10.871 10.809 10.744 10.675 10.604 10.529 10.451 10.37 10.287 10.202 10.115 10.025 9.934 9.841 9.746 9.651 9.553 9.455 9.356 9.256 9.155 9.053 8.951 8.848 8.745 8.642 8.538 8.435 8.331 8.228 8.124 8.021 7.918 7.815 7.713 7.611 7.51 7.409 7.308 7.208 7.109 7.011 6.913 6.816 6.719 6.624 6.529 6.435 6.342 6.25 6.159 6.068 5.979 5.89 5.803 5.716 5.63 5.546 5.462 5.379 5.297 5.216 5.137 5.058 4.98 4.903 4.827 4.752 4.678 4.605 4.533 4.462 4.392 4.323 4.255 4.187 4.121 4.056 3.991 3.928 3.865 3.803 3.742 3.682 3.623 3.565 3.508 3.451 3.396 3.341 3.287 3.234 3.181 3.13 3.079 3.029 2.979 2.931 2.883 2.836 2.79 2.744 2.699 2.655 2.612 2.569 2.527 2.485 2.445 2.404

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.363" PeakHeight="110.0" Num="3" Error="0.0">
-30.481 13.122 -3.154
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.363" EndFrequency="11.25" PeakHeight="396.478" Num="5" zHalfNm="268.712" Error="1.466">
-245.225 -55.394 21.631 -3.069 0.564
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="4.985" Depth="0.123"/>
<TopsideChapman PeakHeight="396.478" PeakDensity="1570254.4" PeakScaleHeight="92.702" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
