<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-11-02 -306 20:40:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, 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" >
2026.11.02 (306) 20:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.41" 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">
FF202630611022040009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="10.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.438" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.692" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="8.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="8.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="460.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="460.000" 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="0.600" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="10.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="562.383" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.224" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="8.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="8.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="402.352" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="309.514" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="9.282" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="133.061" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="43.525" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="67.958" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="140.060" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.720" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="42">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
460.000 460.000 460.000 465.000 470.000 470.000 470.000 475.000 480.000 480.000 485.000 485.000 490.000 490.000 493.750 497.500 501.250 505.000 510.000 510.000 520.000 520.000 520.000 522.500 525.000 530.000 535.000 536.840 538.872 541.126 543.642 546.467 549.663 553.308 557.503 562.383 568.130 575.000 583.355 593.737 606.984 624.472
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 57 48 63 51 0 54 0 54 60 57 66 57 63 0 0 0 57 60 66 48 66 63 0 66 63 57 57 0 45 57 51 0 0 60 48 60 60 54 51 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 -1.171875 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.171875 -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 -1.171875 -1.171875 -0.390625 -1.171875 0.390625 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 -1.171875 1.171875 1.171875
</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" >
90.085 95.0 100.0 105.0 110.0 115.0 120.0 123.636 125.0 130.0 135.0 137.272 140.0 145.0 150.0 150.908 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 402.352 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.816 1.06 1.185 1.224 1.203 1.138 1.059 1.059 1.059 1.059 1.059 1.092 1.153 1.213 1.224 1.332 1.455 1.576 1.7 1.828 1.963 2.106 2.259 2.422 2.596 2.781 2.979 3.187 3.405 3.633 3.867 4.107 4.351 4.597 4.845 5.094 5.343 5.591 5.838 6.084 6.328 6.572 6.813 7.054 7.293 7.53 7.766 8.0 8.232 8.461 8.689 8.913 9.135 9.351 9.563 9.769 9.967 10.155 10.33 10.491 10.634 10.754 10.848 10.913 10.946 10.95 10.948 10.937 10.914 10.882 10.84 10.788 10.728 10.661 10.585 10.503 10.414 10.319 10.219 10.113 10.004 9.889 9.772 9.65 9.526 9.399 9.27 9.139 9.006 8.872 8.736 8.6 8.463 8.326 8.189 8.051 7.914 7.776 7.64 7.504 7.369 7.234 7.101 6.969 6.838 6.708 6.579 6.452 6.327 6.202 6.08 5.959 5.84 5.722 5.606 5.492 5.379 5.269 5.16 5.053 4.947 4.844 4.742 4.642 4.544 4.447 4.352 4.259 4.168 4.078 3.991 3.904 3.82 3.737 3.656 3.576 3.498 3.422 3.347 3.273 3.201 3.131 3.062 2.994 2.928 2.863 2.8 2.737 2.677 2.617 2.559 2.502 2.446 2.391 2.338 2.286 2.235 2.185 2.136 2.088 2.041 1.995 1.95 1.907 1.864 1.822 1.781 1.741 1.701 1.663 1.626 1.589 1.553 1.518 1.484 1.45 1.418 1.386 1.354 1.324 1.294 1.264 1.236 1.208 1.181 1.154

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.224" PeakHeight="110.0" Num="3" Error="0.0">
-27.362 8.962 -1.515
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.224" EndFrequency="10.95" PeakHeight="402.352" Num="5" zHalfNm="309.514" Error="4.771">
-238.222 -23.271 15.207 -8.642 3.484
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="40.908" Depth="0.165"/>
<TopsideChapman PeakHeight="402.352" PeakDensity="1487624.1" PeakScaleHeight="67.958" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
