<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-13 -044 11:00:00.000"
URSICode="SMK29"
StationName="Santa Maria"
GeoLatitude="-29.69"
GeoLongitude="307.81"
Source="Ionosonde"
SourceType="DPS-4D"
ScalerType="auto">
<SystemInfo UMLStationID="129">
<FrequencyStepping StartFrequency="2.0" StopFrequency="20.0">
<LinearStepping Step="0.025" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="2.5" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="1 25 0 1 0 0 0 1 0 55 0 0 0 0 0 0 0 0 0 0 "/>
<Comments>AR.5002.49: Problems inverting F-trace to N(h)-profile</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.13 (044) 11:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.15" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.95" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="85.88234" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202604402131100001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.275" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="10" Val="4.250" Name="foF1" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.226" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="23.466" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="4.575" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.775" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="2.075" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="2.730" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.675" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="142.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="243.333" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="101.131" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="112.500" Name="h`Es" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="102.519" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="12.270" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="320.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.508" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.775" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.275" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.707" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.875" Description="Minimum frequency of Es-layer" Units="MHz" />
</CharacteristicList>
<TraceList Num="4">
<Trace Type="standard" Layer="F2" Polarization="O" Num="121">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65 4.675 4.7 4.725 4.75 4.775 4.8 4.825 4.85 4.875 4.9 4.925 4.95 4.975 5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3 5.325 5.35 5.375 5.4 5.425 5.45 5.475 5.5 5.525 5.55 5.575 5.6 5.625 5.65 5.675 5.7 5.725 5.75 5.775 5.8 5.825 5.85 5.875 5.9 5.925 5.95 5.975 6.0 6.025 6.05 6.075 6.1 6.125 6.15 6.175 6.2 6.225 6.25 6.275 6.3 6.325 6.35 6.375 6.4 6.425 6.45 6.475 6.5 6.525 6.55 6.575 6.6 6.625 6.65 6.675 6.7 6.725 6.75 6.775 6.8 6.825 6.85 6.875 6.9 6.925 6.95 6.975 7.0 7.025 7.05 7.075 7.1 7.125 7.15 7.175 7.2 7.225 7.25 7.275
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
243.333 244.167 245.000 245.000 245.000 245.000 245.625 246.250 246.875 247.500 247.500 248.750 250.000 250.000 250.000 250.000 250.000 252.500 252.500 252.500 252.500 252.500 252.500 253.750 255.000 255.000 255.000 255.000 255.000 255.000 255.000 257.500 257.500 257.500 257.500 260.000 260.000 260.000 260.000 262.500 262.500 263.750 265.000 265.000 265.000 265.000 267.500 267.500 267.500 267.500 270.000 270.000 270.000 270.000 272.500 272.500 272.500 272.500 275.000 275.000 275.000 277.500 277.500 277.500 280.000 280.000 280.000 280.000 282.500 282.500 285.000 285.000 287.500 287.500 287.500 290.000 290.000 292.500 292.500 295.000 295.000 297.500 297.500 300.000 300.000 302.500 305.000 305.000 307.500 307.500 310.000 310.000 315.000 315.000 317.500 320.000 320.000 322.500 325.000 327.500 330.000 332.500 335.000 337.500 342.500 345.000 350.000 355.000 355.000 360.000 363.638 367.824 372.695 378.432 385.288 393.628 403.990 417.213 434.669 458.780 494.247
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 69 72 57 57 0 0 0 36 57 0 81 78 66 69 57 57 60 57 69 69 81 0 84 84 84 84 69 66 63 72 81 81 90 96 84 84 72 72 75 63 81 84 87 87 81 84 84 84 78 84 87 87 81 84 87 87 87 87 87 84 87 87 84 87 87 84 87 87 84 87 96 99 96 96 96 96 84 81 84 81 72 72 84 84 81 84 84 87 84 84 81 87 72 69 0 0 81 81 84 81 81 81 84 84 60 0 57 54 45 42 69 66 93 93 78 78 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 -3.125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="F1" Polarization="O" Num="60">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.775 2.8 2.825 2.85 2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
142.500 145.000 147.500 149.279 151.058 152.837 154.615 156.394 158.173 159.952 161.731 163.510 165.288 167.067 168.846 170.625 172.404 174.183 175.962 177.740 179.519 181.298 183.077 184.856 186.635 188.413 190.192 191.971 193.750 195.529 197.308 199.087 200.865 202.644 204.423 206.202 207.981 209.760 211.538 213.317 215.096 216.875 218.654 220.433 222.212 223.990 225.769 227.548 229.327 231.106 232.885 234.663 236.442 238.221 240.000 240.000 240.625 241.250 241.875 242.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
39 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 69 0 0 60 0 0 0 0 0 87 87 0 0 0 72
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 9.375 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -9.375 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -9.375 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="27">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.075 2.1 2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
101.131 101.510 101.905 102.314 102.740 103.183 103.646 104.129 104.636 105.167 105.725 106.315 106.938 107.600 108.305 109.061 109.875 110.758 111.724 112.791 113.985 115.344 116.927 118.829 121.234 124.545 130.051
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 54 0 48 57 45 39 0 0 0 0 0 0 0 0 0 0 45 42 42 0 0 39 0 0 39
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 -9.375 3.125 -3.125 -9.375 3.125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="69">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
132.500 130.500 128.500 126.500 124.500 122.500 120.000 120.000 120.000 119.167 118.333 117.500 117.500 117.500 117.500 117.500 117.500 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 115.000 112.500 112.500 112.500 112.500 112.500 113.750 115.000 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500 112.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 0 0 0 0 45 69 69 69 0 0 66 69 69 72 75 75 78 90 93 96 96 84 81 69 72 72 72 72 72 69 63 75 69 57 54 54 54 0 0 69 0 0 69 60 60 75 75 78 75 84 75 63 72 72 72 72 72 66 63 54 54 30 33 33 0 54 0 75
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 -3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="14">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.0 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 102.519
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 1.3195343 2.0550125 2.539185 2.9219882 3.2379422 3.501396 3.719914 3.897828 4.0378885 4.141821 4.2107797 4.2454276 4.25

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="1" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="4.25" PeakHeight="102.519" Num="3" Error="1.537">
-18.374 7.575 -1.72
</ShiftedChebyshev>
</ShiftedChebyshevList>
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
