<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-07 -066 05:20:00.000"
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="18.0">
<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: 95% PACIFIC flags: Multiple candidates for F2x cusp</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" >
2026.03.07 (066) 05:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.16" 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">
FF202606603070520009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="8.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.016" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.541" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.100" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="8.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="365.000" 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="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="334.261" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.308" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.843" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="89.359" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="18.710" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="47.578" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="75.280" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="132">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 250.000 250.000 250.000 253.333 256.667 260.000 260.000 260.000 260.000 265.000 263.333 261.667 260.000 260.000 261.000 262.000 263.000 264.000 265.000 265.000 265.000 267.500 270.000 270.000 270.000 270.000 270.000 270.000 270.000 270.000 269.286 268.571 267.857 267.143 266.429 265.714 265.000 265.000 265.000 270.000 275.000 277.500 280.000 277.500 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.000 275.750 276.500 277.250 278.000 278.750 279.500 280.250 281.000 281.750 282.500 283.250 284.000 284.750 285.500 286.250 287.000 287.750 288.500 289.250 290.000 290.000 292.500 295.000 295.000 297.500 300.000 301.667 303.333 305.000 306.667 308.333 310.000 311.667 313.333 315.000 316.667 318.333 320.000 321.667 323.333 325.000 326.667 328.333 330.000 330.000 333.333 336.667 340.000 342.500 345.000 340.000 340.000 340.000 345.000 350.000 350.000 352.500 355.000 355.000 355.000 360.000 365.000 365.000 370.000 375.000 385.000 385.000 390.000 395.000 405.000 410.000 422.694 439.485 462.736 497.064 552.860
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 75 0 72 0 0 69 0 0 72 0 0 0 69 69 0 0 0 0 75 75 75 0 69 75 72 66 72 0 0 72 63 0 66 0 0 69 0 69 66 0 75 78 75 0 72 72 0 0 69 0 0 72 0 75 63 0 0 75 78 0 84 0 75 75 0 0 78 69 0 0 0 75 0 75 78 69 69 78 75 0 75 0 0 66 69 69 0 78 66 0 75 69 66 0 60 69 69 57 63 69 57 0 63 0 54 66 75 78 69 69 69 63 72 78 72 63 72 75 66 72 69 72 66 69 69 60 57 63 0 60 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 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 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 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.953125 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 0.390625 1.171875 1.171875 0.390625 0.390625 1.171875 1.171875 1.171875 1.171875 0.390625 0.390625 1.171875 0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="184">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 142.667 145.0 150.0 155.0 160.0 165.0 170.0 175.0 175.333 180.0 185.0 190.0 195.0 200.0 205.0 208.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 334.261 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.328 0.306 0.275 0.231 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.222 0.246 0.269 0.293 0.316 0.34 0.354 0.382 0.471 0.599 0.782 1.05 1.441 1.995 2.71 3.503 4.27 4.961 5.567 6.096 6.557 6.961 7.312 7.619 7.883 8.11 8.302 8.46 8.587 8.684 8.751 8.79 8.8 8.8 8.788 8.758 8.713 8.652 8.577 8.491 8.393 8.284 8.167 8.043 7.911 7.773 7.63 7.484 7.333 7.18 7.025 6.869 6.711 6.553 6.395 6.238 6.081 5.926 5.772 5.62 5.469 5.321 5.175 5.031 4.89 4.752 4.616 4.483 4.353 4.225 4.101 3.979 3.861 3.745 3.632 3.523 3.416 3.311 3.21 3.111 3.016 2.922 2.832 2.744 2.658 2.575 2.495 2.416 2.34 2.267 2.195 2.126 2.059 1.993 1.93 1.869 1.809 1.752 1.696 1.642 1.59 1.539 1.49 1.442 1.396 1.351 1.308 1.266 1.225 1.186 1.148 1.111 1.075 1.041 1.007 0.975 0.944 0.913 0.884 0.855 0.828 0.801 0.775 0.75 0.726 0.703 0.68 0.658 0.637 0.616 0.597 0.577 0.559 0.541 0.523 0.506 0.49 0.474 0.459 0.444 0.43 0.416 0.402 0.389 0.377 0.365 0.353 0.342 0.331 0.32 0.31 0.3 0.29 0.28 0.271 0.263 0.254 0.246 0.238 0.23 0.223 0.216 0.209 0.202

</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="8.8" PeakHeight="334.261" Num="5" zHalfNm="271.308" Error="1.96">
-154.552 44.675 -19.407 3.853 -0.83
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="98.0" Depth="0.154"/>
<TopsideChapman PeakHeight="334.261" PeakDensity="960794.06" PeakScaleHeight="47.578" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
