<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-23 -296 07:10:00.000"
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="14.0">
<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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other</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" >
2026.10.23 (296) 07:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629610230710009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="6.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.491" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.817" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="205.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="205.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="315.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="1.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="1.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="276.414" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="238.885" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.047" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="54.818" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="5.768" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.976" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="55.010" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.990" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="105">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.05 1.1 1.15 1.2 1.25 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 207.500 205.000 210.000 210.000 210.000 210.000 205.000 206.250 207.500 208.750 210.000 211.250 212.500 213.750 215.000 215.000 215.000 215.000 220.000 221.145 222.289 223.434 224.578 225.723 226.867 228.012 229.157 230.301 231.446 232.590 233.735 234.880 236.024 237.169 238.313 239.458 240.602 241.747 242.892 244.036 245.181 246.325 247.470 248.614 249.759 250.904 252.048 253.193 254.337 255.482 256.627 257.771 258.916 260.060 261.205 262.349 263.494 264.639 265.783 266.928 268.072 269.217 270.361 271.506 272.651 273.795 274.940 276.084 277.229 278.373 279.518 280.663 281.807 282.952 284.096 285.241 286.386 287.530 288.675 289.819 290.964 292.108 293.253 294.398 295.542 296.687 297.831 298.976 300.120 301.265 302.410 303.554 304.699 305.843 306.988 308.133 309.277 310.422 311.566 312.711 313.855 315.000 364.758 448.818
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 66 66 63 66 66 63 0 66 0 63 0 72 0 72 0 0 0 60 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 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 -2.734375 0.390625 -2.734375 -2.734375 -0.390625 0.390625 0.390625 -0.390625 -1.953125 -0.390625 -1.953125 0.390625 -2.734375 2.734375 -0.390625 0.390625 -2.734375 -0.390625 0.390625 0.390625 -1.953125 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -2.734375 -0.390625 -1.171875 2.734375 2.734375 -0.390625 -1.171875 1.953125 0.390625 0.390625 0.390625 0.390625 -0.390625 -1.171875 -1.171875 -0.390625 0.390625 0.390625 2.734375 -2.734375 -0.390625 0.390625 1.171875 -0.390625 -0.390625 -0.390625 -0.390625 1.953125 -0.390625 -2.734375 -0.390625 -0.390625 -1.171875 0.390625 1.171875 -2.734375 2.734375 0.390625 0.390625 -0.390625 2.734375 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 2.734375 -1.171875 -0.390625 -0.390625 -0.390625 2.734375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="112">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 132.167 135.0 140.0 145.0 150.0 154.333 155.0 160.0 165.0 170.0 175.0 176.5 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 276.414 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.348 0.331 0.3 0.25 0.219 0.219 0.219 0.219 0.219 0.219 0.223 0.254 0.284 0.314 0.345 0.354 0.414 0.559 0.83 1.191 1.561 1.925 2.287 2.651 3.017 3.387 3.759 4.132 4.501 4.862 5.207 5.525 5.802 6.025 6.177 6.246 6.25 6.24 6.196 6.121 6.019 5.894 5.75 5.592 5.422 5.243 5.058 4.869 4.679 4.488 4.299 4.112 3.929 3.75 3.575 3.406 3.242 3.084 2.931 2.785 2.645 2.51 2.382 2.259 2.142 2.031 1.925 1.824 1.727 1.636 1.549 1.467 1.389 1.315 1.244 1.178 1.114 1.055 0.998 0.944 0.893 0.845 0.799 0.756 0.715 0.677 0.64 0.605 0.573 0.542 0.512 0.485 0.458 0.433 0.41 0.388 0.367 0.347 0.328 0.31 0.293 0.277 0.262 0.248 0.235 0.222 0.21

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="6.25" PeakHeight="276.414" Num="5" zHalfNm="238.885" Error="3.525">
-104.507 3.399 4.801 -3.435 -0.172
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="66.5" Depth="0.135"/>
<TopsideChapman PeakHeight="276.414" PeakDensity="484646.4" PeakScaleHeight="27.976" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
