<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 17:00:00.000"
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 F2x 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" >
2026.03.08 (067) 17:00:00</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">
FF202606703081700009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="11.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.492" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="29.160" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="210.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="210.000" 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="11.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="520.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="3.271" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF1p" Val="4.305" Units="MHz" ModelName="IRI-90" />
<URSI ID="92" Val="375.904" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="271.681" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.090" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="135.682" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="56.248" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="75.114" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="178.390" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.200" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="150">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 10.75 10.8 10.85 10.9 10.95 11.0 11.05 11.1 11.15 11.2 11.25 11.3 11.35 11.4 11.45 11.5 11.55 11.6 11.65 11.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.000 213.333 216.667 220.000 223.333 226.667 230.000 230.000 235.000 240.000 245.000 250.000 255.000 260.000 265.000 270.000 270.000 276.000 282.000 288.000 294.000 300.000 305.000 305.000 305.000 310.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 315.000 317.500 320.000 320.000 322.500 325.000 325.000 330.000 330.000 330.000 330.000 330.000 335.000 335.000 340.000 340.000 340.000 340.000 345.000 345.000 350.000 352.500 355.000 357.500 360.000 362.500 365.000 365.000 370.000 370.000 372.500 375.000 380.000 380.000 380.000 385.000 385.000 385.000 390.000 395.000 395.000 400.000 400.000 400.000 405.000 405.000 410.000 410.000 415.000 415.000 420.000 420.000 422.500 425.000 430.000 430.000 430.000 435.000 435.000 435.000 435.000 438.333 441.667 445.000 445.000 450.000 450.000 450.000 450.000 455.000 455.000 455.000 455.000 457.500 460.000 460.000 465.000 467.500 470.000 470.000 470.000 470.000 470.000 475.000 470.000 472.500 475.000 480.000 485.000 490.000 490.000 490.000 495.000 495.000 500.000 505.000 507.500 510.000 515.000 517.500 520.000 520.000 525.000 530.000 534.610 539.751 545.520 552.040 559.466 568.003 577.920 589.581 603.490 620.366
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 45 0 0 0 0 0 48 51 0 0 0 0 0 0 48 51 48 0 51 0 0 57 48 48 48 57 51 57 0 57 60 60 57 0 54 48 0 60 57 0 57 57 51 57 57 60 57 63 63 60 0 63 57 63 63 60 0 63 0 60 48 57 63 51 57 0 57 51 54 54 51 63 63 0 57 63 57 66 69 66 69 63 63 54 57 54 51 0 51 48 57 63 57 63 63 57 0 0 63 63 57 60 60 63 60 0 63 60 0 60 60 57 0 48 0 48 51 51 51 54 45 51 51 0 45 51 54 51 54 51 42 0 45 42 0 48 45 42 42 45 0 42 0 45 48 51 51 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 0.390625 1.953125 -1.953125 0.390625 -1.953125 0.390625 0.390625 -0.390625 2.734375 -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 -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 -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 1.953125 -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 -1.953125 -0.390625 2.734375 0.390625 0.390625 0.390625 0.390625 -0.390625 2.734375
</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" >
89.501 90.0 95.0 100.0 105.0 110.0 112.041 114.083 115.0 116.124 120.0 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 375.904 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24 2.2 2.831 3.165 3.271 3.149 3.149 3.204 3.271 3.37 3.499 3.632 3.768 3.908 4.05 4.195 4.343 4.494 4.647 4.803 4.961 5.121 5.282 5.446 5.611 5.777 5.945 6.114 6.284 6.455 6.627 6.8 6.973 7.148 7.323 7.499 7.676 7.854 8.033 8.213 8.393 8.575 8.757 8.941 9.125 9.31 9.497 9.684 9.872 10.061 10.249 10.438 10.625 10.81 10.99 11.163 11.324 11.467 11.584 11.665 11.699 11.7 11.697 11.684 11.661 11.63 11.59 11.543 11.487 11.425 11.355 11.28 11.198 11.111 11.019 10.922 10.82 10.715 10.605 10.493 10.377 10.258 10.137 10.014 9.889 9.762 9.634 9.504 9.373 9.242 9.11 8.977 8.844 8.711 8.578 8.446 8.313 8.181 8.05 7.919 7.788 7.659 7.531 7.403 7.277 7.151 7.027 6.904 6.783 6.662 6.543 6.426 6.31 6.195 6.082 5.97 5.86 5.751 5.644 5.539 5.435 5.332 5.231 5.132 5.034 4.938 4.843 4.75 4.658 4.568 4.479 4.392 4.307 4.223 4.14 4.059 3.979 3.9 3.823 3.748 3.674 3.601 3.529 3.459 3.39 3.322 3.256 3.191 3.127 3.064 3.003 2.943 2.883 2.825 2.768 2.713 2.658 2.604 2.551 2.5 2.449 2.4 2.351 2.303 2.257 2.211 2.166 2.122 2.079 2.036 1.995 1.954 1.914 1.875 1.837 1.8 1.763 1.727 1.692 1.657 1.623 1.59 1.557 1.526 1.494 1.464 1.434

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="3.271" PeakHeight="110.0" Num="3" Error="0.0">
-30.413 13.021 -3.107
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="3.271" EndFrequency="11.7" PeakHeight="375.904" Num="5" zHalfNm="271.681" Error="4.37">
-211.552 -64.38 20.786 -5.369 0.735
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="6.124" Depth="0.122"/>
<TopsideChapman PeakHeight="375.904" PeakDensity="1698387.1" PeakScaleHeight="75.114" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
