<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-07 -066 21:20:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2o cusp, 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" >
2026.03.07 (066) 21:20:00</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">
FF202606603072120009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.610" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="27.922" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="510.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.908" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="382.134" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="312.959" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.274" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="100.684" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="31.036" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="50.246" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="107.240" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.620" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="163">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
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</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 0 0 51 54 0 0 0 0 0 57 63 0 0 0 0 69 0 66 0 63 57 0 69 0 0 0 66 63 51 69 66 0 0 0 0 0 63 0 0 0 0 0 63 0 0 57 0 63 0 51 54 0 66 51 66 0 0 0 57 0 0 69 69 0 63 0 0 60 63 0 57 72 66 69 54 0 66 69 0 0 69 72 0 0 45 72 60 63 66 57 0 0 0 0 66 0 60 63 69 60 66 72 60 69 72 63 69 72 75 66 72 75 66 69 72 69 69 0 66 0 60 66 69 66 69 60 69 72 63 66 66 66 63 63 54 60 54 63 0 0 60 63 60 60 60 60 60 0 54 0 0 51 51 0 0 0 45 45 0 48 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</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" >
90.382 95.0 100.0 105.0 110.0 115.0 120.0 125.0 129.602 130.0 135.0 140.0 145.0 149.203 150.0 155.0 160.0 165.0 168.805 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 382.134 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.604 0.787 0.879 0.908 0.893 0.846 0.763 0.642 0.642 0.642 0.642 0.642 0.642 0.653 0.721 0.789 0.856 0.908 0.943 1.067 1.182 1.298 1.418 1.547 1.686 1.839 2.007 2.192 2.396 2.619 2.86 3.118 3.388 3.668 3.954 4.244 4.535 4.827 5.117 5.407 5.695 5.981 6.267 6.551 6.835 7.117 7.399 7.681 7.962 8.242 8.522 8.799 9.075 9.346 9.611 9.865 10.103 10.318 10.497 10.627 10.693 10.7 10.697 10.675 10.635 10.578 10.505 10.417 10.315 10.202 10.077 9.943 9.8 9.65 9.493 9.33 9.162 8.99 8.815 8.638 8.458 8.278 8.096 7.914 7.733 7.552 7.372 7.193 7.016 6.84 6.667 6.496 6.327 6.161 5.998 5.837 5.68 5.525 5.374 5.225 5.08 4.938 4.799 4.664 4.531 4.402 4.275 4.152 4.032 3.915 3.801 3.69 3.582 3.477 3.375 3.275 3.178 3.084 2.993 2.904 2.817 2.733 2.651 2.572 2.495 2.42 2.347 2.277 2.208 2.141 2.077 2.014 1.953 1.894 1.837 1.781 1.727 1.675 1.624 1.574 1.527 1.48 1.435 1.392 1.349 1.308 1.268 1.23 1.192 1.156 1.121 1.086 1.053 1.021 0.99 0.96 0.93 0.902 0.874 0.848 0.822 0.797 0.772 0.749 0.726 0.704 0.682 0.661 0.641 0.622 0.603 0.584 0.566 0.549 0.532 0.516 0.5 0.485 0.47 0.456 0.442 0.428 0.415 0.402 0.39 0.378

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.908" PeakHeight="110.0" Num="3" Error="0.0">
-26.06 7.54 -1.098
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.908" EndFrequency="10.7" PeakHeight="382.134" Num="5" zHalfNm="312.959" Error="3.846">
-195.155 -29.532 17.283 -10.269 4.344
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="58.805" Depth="0.266"/>
<TopsideChapman PeakHeight="382.134" PeakDensity="1420471.5" PeakScaleHeight="50.246" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
