<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-17 -048 10:20:00.000"
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" >
2026.02.17 (048) 10:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.16" 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">
FF202604802171020001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="21" >
<URSI ID="00" Val="6.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="10" Val="2.700" Name="foF1" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.252" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.976" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="2.000" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="2.280" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="140.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="212.500" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="110.516" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="101.912" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="11.729" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="300.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.165" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.186" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
</CharacteristicList>
<TraceList Num="3">
<Trace Type="standard" Layer="F2" Polarization="O" Num="150">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.725 2.75 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
242.500 240.000 237.500 225.000 217.500 216.250 215.000 214.375 213.750 213.125 212.500 212.500 212.500 212.500 212.500 212.500 212.500 215.000 212.500 212.500 213.750 215.000 215.000 215.000 215.000 217.500 217.500 217.500 217.500 217.500 217.500 217.500 220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.000 225.000 227.500 227.500 227.500 227.500 230.000 230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 235.000 235.000 235.000 235.000 237.500 237.500 237.500 237.500 240.000 240.000 240.000 242.500 242.500 242.500 245.000 245.000 245.000 246.250 247.500 250.000 250.000 250.000 250.000 252.500 255.000 255.000 255.000 255.000 257.500 257.500 257.500 260.000 260.000 262.500 262.500 262.500 265.000 265.000 267.500 267.500 270.000 272.500 275.000 275.000 275.000 277.500 277.500 280.000 282.500 282.500 282.500 285.000 287.500 287.500 290.000 290.000 295.000 297.500 297.500 300.000 300.000 305.000 307.500 310.000 312.500 315.000 315.000 317.500 320.000 322.500 325.000 332.500 335.000 337.500 340.000 345.000 350.000 355.000 362.500 367.500 372.500 380.000 389.845 401.441 415.299 432.155 453.098 479.820 515.097
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 42 54 69 42 33 21 0 0 0 42 0 45 45 69 69 72 63 57 57 0 60 72 72 96 93 84 87 75 75 63 60 60 63 75 75 60 57 45 48 45 45 54 51 57 57 84 81 84 84 96 96 93 96 84 87 72 72 75 78 63 63 66 63 75 75 75 75 48 48 48 48 69 72 99 93 72 72 57 63 0 60 75 78 87 72 57 63 102 96 99 99 99 99 96 99 99 99 99 99 87 90 84 75 60 66 87 87 87 81 63 60 87 87 99 99 99 96 93 99 87 84 84 84 81 81 81 87 87 87 84 84 78 81 96 93 93 93 93 90 78 78 78 75 72 72 69 72 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 -21.875 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 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="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
140.000 150.909 161.818 172.727 183.636 194.545 205.455 216.364 227.273 238.182 249.091 260.000 255.000 252.500 242.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
27 0 0 0 0 0 0 0 0 0 0 33 39 36 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 3.125 -3.125 -3.125 -9.375 -3.125 -3.125 9.375 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="12">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 2.05 2.075 2.1 2.125 2.15 2.175 2.2 2.225 2.25 2.275
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
110.516 111.188 111.904 112.672 113.499 114.396 115.377 116.461 117.673 119.052 120.657 122.583
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 0 42 51 51 0 51 54 57 0 42 24
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="13">
<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 99.0 100.0 101.0 101.912
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.9695007 1.432122 1.7324537 1.9652458 2.153845 2.3081512 2.4334261 2.5327406 2.60805 2.660569 2.6910567 2.7

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="1" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.7" PeakHeight="101.912" Num="3" Error="4.531">
-17.275 6.831 -1.468
</ShiftedChebyshev>
</ShiftedChebyshevList>
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
