<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-22 -295 22:40:00.000"
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="14.0">
<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 33 1 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 60% PACIFIC flags: Moderate F-spread, F2o cusp not found, Multiple candidates for F2x cusp, 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" >
2026.10.22 (295) 22:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" 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">
FF202629510222240009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="11.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.477" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.858" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="1.850" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="6.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="390.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="390.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="110.000" Name="h`Es" 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="11.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="540.000" 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="6.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="6.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="443.816" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="373.914" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.085" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="1.100" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="103.299" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="37.593" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="52.226" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="104.530" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="110">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
395.000 393.333 391.667 390.000 393.333 396.667 400.000 395.000 400.000 402.500 405.000 410.000 415.000 415.000 415.000 415.000 415.000 412.500 410.000 410.000 408.000 406.000 404.000 402.000 400.000 400.000 400.000 400.000 400.000 400.000 400.000 401.667 403.333 405.000 405.000 405.000 406.250 407.500 408.750 410.000 410.000 415.000 415.000 415.000 416.250 417.500 418.750 420.000 422.222 424.444 426.667 428.889 431.111 433.333 435.556 437.778 440.000 442.222 444.444 446.667 448.889 451.111 453.333 455.556 457.778 460.000 462.222 464.444 466.667 468.889 471.111 473.333 475.556 477.778 480.000 482.222 484.444 486.667 488.889 491.111 493.333 495.556 497.778 500.000 502.222 504.444 506.667 508.889 511.111 513.333 515.556 517.778 520.000 522.222 524.444 526.667 528.889 531.111 533.333 535.556 537.778 540.000 555.000 560.000 565.000 567.500 570.000 581.250 592.500 603.750
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 75 0 0 75 69 72 0 81 66 75 78 81 69 75 72 78 66 0 0 0 0 69 72 72 0 72 66 63 0 0 81 0 0 0 0 0 78 0 0 0 0 0 0 0 0 0 0 0 0 63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 0 0 0 0 54 0 0 0 0 0 0 0 0 0 0 0 0 51 0 0 51 48 0 48 48 45 45 42 0 42 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 -0.390625 1.171875 1.171875 -0.390625 1.171875 -1.171875 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 1.953125 -1.953125 -0.390625 -1.171875 -1.171875 -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 -1.171875 -0.390625 -0.390625 -0.390625 -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 -1.171875 -0.390625 -1.171875 -0.390625 -2.734375 2.734375 -0.390625 -0.390625 -0.390625 2.734375 -1.171875 -1.171875 -1.171875 -1.953125 -0.390625 -0.390625 -1.171875 -0.390625 -2.734375 -0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -0.390625 -1.171875 -1.953125 -1.953125 -0.390625 -2.734375 -1.953125 -1.171875 -1.171875 -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 -2.734375 1.171875 1.171875
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.1 1.15 1.2 1.25 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 110.000 111.667 113.333 115.000 115.000 117.500 120.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 66 66 66 0 0 66 69 60 0 0 81 78 0 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
</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" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 143.922 145.0 150.0 155.0 160.0 165.0 170.0 175.0 177.844 180.0 185.0 190.0 195.0 200.0 205.0 210.0 211.766 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 443.816 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.351 0.343 0.33 0.309 0.281 0.242 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.21 0.232 0.255 0.278 0.301 0.323 0.346 0.354 0.394 0.46 0.534 0.618 0.713 0.821 0.943 1.08 1.232 1.401 1.587 1.788 2.004 2.235 2.479 2.736 3.004 3.282 3.571 3.868 4.175 4.49 4.812 5.141 5.477 5.819 6.166 6.518 6.874 7.233 7.594 7.955 8.316 8.674 9.028 9.375 9.712 10.035 10.342 10.628 10.887 11.116 11.31 11.464 11.573 11.636 11.65 11.649 11.634 11.6 11.548 11.479 11.395 11.296 11.184 11.061 10.927 10.784 10.632 10.473 10.307 10.136 9.96 9.779 9.596 9.41 9.222 9.033 8.843 8.653 8.462 8.272 8.083 7.896 7.709 7.525 7.342 7.162 6.984 6.809 6.636 6.466 6.299 6.135 5.974 5.816 5.661 5.51 5.361 5.216 5.074 4.935 4.8 4.667 4.538 4.412 4.289 4.169 4.052 3.937 3.826 3.718 3.612 3.51 3.41 3.312 3.218 3.125 3.036 2.948 2.863 2.781 2.701 2.623 2.547 2.473 2.401 2.331 2.264 2.198 2.134 2.072 2.011 1.953 1.896 1.84 1.787 1.734 1.684 1.634 1.587 1.54 1.495 1.451 1.409 1.367 1.327 1.288 1.251 1.214 1.178 1.144 1.11 1.077 1.046 1.015 0.985 0.956 0.928 0.901 0.874 0.849 0.824 0.799 0.776 0.753 0.731 0.709 0.688

</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="11.65" PeakHeight="443.816" Num="5" zHalfNm="373.914" Error="2.76">
-229.078 -9.228 10.359 -5.626 1.523
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="101.766" Depth="0.154"/>
<TopsideChapman PeakHeight="443.816" PeakDensity="1683902.0" PeakScaleHeight="52.226" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
