<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-08 -067 22:00:00.000"
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 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" >
2026.03.08 (067) 22:00:00</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">
FF202606703082200009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.321" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="21.701" 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="9.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="365.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="365.000" 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="0.500" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="622.037" 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="0.362" 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="473.704" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="399.283" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="8.811" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="110.570" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="26.009" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="55.440" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="116.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="143">
<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 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
365.000 365.000 365.000 367.000 369.000 371.000 373.000 375.000 370.000 370.000 370.000 371.000 372.000 373.000 374.000 375.000 376.000 377.000 378.000 379.000 380.000 381.000 382.000 383.000 384.000 385.000 387.000 389.000 391.000 393.000 395.000 395.000 396.111 397.222 398.333 399.444 400.556 401.667 402.778 403.889 405.000 405.000 405.000 406.250 407.500 408.750 410.000 410.000 415.000 415.000 415.000 415.000 415.000 420.000 420.000 421.250 422.500 423.750 425.000 425.000 425.000 425.000 427.500 430.000 430.000 432.500 435.000 430.000 435.000 437.000 439.000 441.000 443.000 445.000 445.000 445.000 450.000 451.250 452.500 453.750 455.000 460.000 460.000 461.429 462.857 464.286 465.714 467.143 468.571 470.000 470.000 475.000 480.000 480.000 480.000 480.000 485.000 485.000 490.000 490.000 491.667 493.333 495.000 495.000 505.000 505.000 505.000 510.000 510.000 510.000 515.000 520.000 520.000 525.000 525.000 530.000 535.000 535.000 540.000 540.000 545.000 547.500 550.000 550.000 550.000 555.000 560.000 565.000 570.000 575.000 580.000 580.000 580.000 590.000 590.000 595.000 600.000 605.000 610.000 615.000 622.037 630.456 640.708
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 54 51 0 0 0 0 57 63 0 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 72 0 0 0 0 60 63 0 0 0 51 0 0 0 0 54 0 63 0 0 0 63 63 51 54 60 0 69 60 66 51 0 0 63 63 0 66 0 63 57 0 48 0 63 0 0 0 0 57 63 63 63 0 0 0 57 48 51 0 0 0 0 0 0 63 60 60 51 0 60 63 57 63 57 60 0 0 60 60 48 54 60 54 60 60 54 57 60 60 66 57 48 57 48 60 57 0 57 60 0 57 0 60 60 57 51 66 63 60 60 57 54 51 45 57 57 51 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 1.953125 -0.390625 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -0.390625 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 2.734375 -1.171875 -0.390625 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 -1.171875 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.171875 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 -1.953125 1.953125
</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" >
93.325 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 139.888 140.0 145.0 150.0 155.0 160.0 165.0 169.775 170.0 175.0 180.0 185.0 190.0 195.0 199.663 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 473.704 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.239 0.314 0.351 0.362 0.358 0.348 0.329 0.3 0.259 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.201 0.228 0.255 0.283 0.31 0.337 0.362 0.368 0.439 0.5 0.561 0.622 0.686 0.753 0.824 0.9 0.982 1.069 1.162 1.261 1.368 1.482 1.603 1.732 1.869 2.013 2.165 2.324 2.49 2.663 2.843 3.029 3.221 3.419 3.622 3.831 4.044 4.262 4.485 4.712 4.943 5.178 5.416 5.657 5.902 6.149 6.397 6.647 6.898 7.148 7.397 7.643 7.884 8.119 8.344 8.557 8.754 8.93 9.081 9.202 9.289 9.339 9.35 9.35 9.339 9.314 9.276 9.226 9.165 9.094 9.013 8.924 8.826 8.722 8.611 8.494 8.372 8.246 8.115 7.982 7.846 7.707 7.567 7.425 7.282 7.138 6.994 6.85 6.707 6.563 6.421 6.279 6.139 6.0 5.862 5.726 5.592 5.459 5.329 5.2 5.074 4.949 4.827 4.707 4.589 4.474 4.36 4.249 4.14 4.034 3.93 3.828 3.728 3.631 3.536 3.443 3.352 3.263 3.176 3.092 3.01 2.929 2.851 2.774 2.699 2.627 2.556 2.487 2.419 2.354 2.29 2.228 2.167 2.108 2.05 1.994 1.94 1.887 1.835 1.785 1.736 1.688 1.642 1.597 1.553 1.51 1.469 1.428 1.389 1.35 1.313 1.277 1.242 1.207 1.174 1.142 1.11 1.079 1.049 1.02 0.992 0.965 0.938 0.912 0.887 0.862 0.838 0.815 0.793

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.362" PeakHeight="110.0" Num="3" Error="0.0">
-19.073 2.552 -0.154
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.362" EndFrequency="9.35" PeakHeight="473.704" Num="5" zHalfNm="399.283" Error="5.538">
-254.267 -34.667 17.242 -5.506 3.157
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="89.663" Depth="0.162"/>
<TopsideChapman PeakHeight="473.704" PeakDensity="1084646.4" PeakScaleHeight="55.44" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
