<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-09 -068 19:10:00.000"
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="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: 90% PACIFIC flags: 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" >
2026.03.09 (068) 19:10:00</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">
FF202606803091910009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="12.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.600" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="33.152" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="13.050" 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="11.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.701" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="365.646" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="281.202" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.638" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="115.198" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.827" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="61.449" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="140.920" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.290" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="186">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 11.75 11.8 11.85 11.9 11.95 12.0 12.05 12.1 12.15 12.2 12.25 12.3 12.35 12.4 12.45 12.5 12.55 12.6 12.65 12.7 12.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.000 215.000 218.182 221.364 224.545 227.727 230.909 234.091 237.273 240.455 243.636 246.818 250.000 250.000 250.000 250.000 252.500 255.000 255.000 257.778 260.556 263.333 266.111 268.889 271.667 274.444 277.222 280.000 275.000 280.000 280.000 285.000 286.000 287.000 288.000 289.000 290.000 290.000 291.667 293.333 295.000 295.000 295.000 297.500 300.000 305.000 305.000 305.000 305.000 305.000 310.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 315.000 320.000 321.429 322.857 324.286 325.714 327.143 328.571 330.000 335.000 335.714 336.429 337.143 337.857 338.571 339.286 340.000 340.000 342.500 345.000 346.111 347.222 348.333 349.444 350.556 351.667 352.778 353.889 355.000 355.000 355.000 357.500 360.000 360.000 360.000 365.000 365.000 365.000 365.000 370.000 370.000 370.000 375.000 375.000 375.000 375.000 380.000 380.000 380.000 385.000 385.000 385.000 385.000 385.000 385.000 390.000 392.500 395.000 395.000 395.000 395.000 400.000 400.000 401.667 403.333 405.000 405.000 405.000 405.000 410.000 410.000 410.000 410.000 410.000 411.667 413.333 415.000 416.667 418.333 420.000 422.500 425.000 425.000 425.000 425.000 425.000 425.000 427.500 430.000 430.000 435.000 435.000 436.667 438.333 440.000 441.667 443.333 445.000 447.500 450.000 455.000 457.500 460.000 460.000 465.000 465.000 470.000 470.000 470.000 475.000 480.000 485.000 490.000 492.500 495.000 495.000 500.000 503.693 507.786 512.350 517.470 523.253 529.839 537.406 546.192 556.516 568.822
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 48 51 0 0 0 0 0 0 0 0 0 0 57 51 57 51 0 54 45 0 0 0 0 0 0 0 0 48 63 63 66 60 0 57 0 0 63 60 0 0 66 66 60 0 69 66 69 69 66 63 66 66 66 66 66 66 69 66 63 0 0 0 0 0 0 0 69 51 0 0 0 45 0 0 63 66 0 57 0 0 0 0 0 0 0 0 60 69 72 57 66 0 69 60 63 69 66 63 66 69 60 63 69 69 63 66 69 63 63 69 69 57 66 69 0 57 63 66 66 60 60 0 0 51 57 63 63 54 0 0 60 60 0 0 60 0 0 57 0 45 48 0 57 45 57 0 54 54 54 54 0 54 0 51 0 54 39 51 54 0 54 51 51 54 51 0 51 0 51 0 48 0 51 48 51 51 0 0 0 51 0 51 45 54 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -0.390625 -0.390625 -1.953125 1.953125 -1.171875 -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 -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 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 -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 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -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" >
89.599 90.0 95.0 100.0 105.0 110.0 114.599 115.0 119.197 120.0 123.796 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 365.646 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.233 1.814 2.338 2.613 2.701 2.578 2.578 2.578 2.599 2.701 2.733 2.867 3.001 3.138 3.277 3.42 3.567 3.72 3.877 4.041 4.21 4.386 4.569 4.757 4.953 5.154 5.362 5.576 5.795 6.019 6.248 6.481 6.717 6.957 7.2 7.445 7.692 7.942 8.193 8.445 8.699 8.954 9.21 9.468 9.726 9.984 10.244 10.503 10.763 11.021 11.278 11.531 11.778 12.015 12.237 12.434 12.595 12.704 12.749 12.75 12.744 12.722 12.685 12.635 12.571 12.495 12.407 12.309 12.201 12.084 11.959 11.826 11.686 11.541 11.39 11.234 11.073 10.909 10.742 10.572 10.4 10.227 10.052 9.875 9.699 9.521 9.344 9.168 8.991 8.816 8.641 8.468 8.296 8.125 7.956 7.789 7.624 7.461 7.3 7.141 6.985 6.831 6.679 6.529 6.382 6.238 6.096 5.956 5.82 5.685 5.553 5.424 5.297 5.173 5.051 4.932 4.815 4.7 4.588 4.479 4.372 4.267 4.164 4.063 3.965 3.869 3.775 3.684 3.594 3.506 3.421 3.337 3.255 3.176 3.098 3.022 2.947 2.875 2.804 2.735 2.667 2.601 2.537 2.474 2.413 2.353 2.295 2.238 2.182 2.128 2.075 2.023 1.973 1.924 1.876 1.829 1.784 1.739 1.696 1.654 1.612 1.572 1.533 1.495 1.457 1.421 1.385 1.351 1.317 1.284 1.252 1.22 1.19 1.16 1.131 1.103 1.075 1.048 1.022 0.996 0.971 0.947 0.923 0.9 0.878 0.856 0.834

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.701" PeakHeight="110.0" Num="3" Error="0.0">
-29.922 12.307 -2.786
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.701" EndFrequency="12.75" PeakHeight="365.646" Num="5" zHalfNm="281.202" Error="3.875">
-196.819 -56.665 15.735 -5.945 1.844
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="13.796" Depth="0.123"/>
<TopsideChapman PeakHeight="365.646" PeakDensity="2016904.5" PeakScaleHeight="61.449" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
