<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 19:00:00.000"
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 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 0 0 "/>
<Comments>AR.5002.49 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 19:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202611004201900001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="11.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.174" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="37.770" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.700" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.325" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="81" Val="2.700" Name="fminE" Units="MHz" QL="/" DL="/" />
<URSI ID="20" Val="2.805" Name="foE" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="12.275" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="24" Val="114.875" Name="h`E" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="99.304" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="9.113" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="11.175" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="342.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.583" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.475" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.475" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="274.569" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.254" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.594" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="78.683" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="32.402" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="42.338" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="75.860" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.900" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="344">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
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</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 84 87 87 72 72 60 60 60 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 81 0 0 0 0 0 0 0 0 0 0 0 0 0 0 33 33 36 48 48 75 75 87 87 75 75 66 66 81 81 81 81 105 105 105 99 84 93 69 69 93 90 90 90 90 90 105 105 93 93 93 93 93 90 90 90 90 90 87 87 102 99 87 87 87 84 84 81 81 81 81 84 69 69 0 69 81 84 81 81 81 81 81 81 93 90 78 75 0 0 78 78 78 78 81 78 69 69 93 93 93 90 66 66 66 66 75 81 84 81 81 81 81 81 57 54 51 51 78 75 0 0 0 81 81 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 51 78 78 81 81 0 0 0 0 78 78 81 84 84 84 63 48 75 78 81 81 84 84 84 72 75 78 90 93 84 84 72 75 78 81 57 57 33 24 0 42 45 45 69 69 93 87 78 81 93 93 81 81 78 81 81 84 96 93 90 93 93 93 93 93 90 93 93 93 93 90 93 93 93 93 93 90 93 93 93 90 90 90 90 90 87 90 54 54 87 87 90 90 90 87 90 90 90 87 90 90 51 48 87 87 87 87 87 87 84 87 54 51 87 87 51 54 54 51 90 90 87 90 93 90 93 87 54 57 54 57 51 54 54 54 54 54 57 54 90 90 54 54 54 54 90 87 90 87 87 87 90 87 51 51 87 87 87 87 87 84 51 51 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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</TraceValueList>
</Trace>
<Trace Type="standard" Layer="E" Polarization="O" Num="5">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.7 2.725 2.75 2.775 2.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
114.875 115.682 116.557 117.514 118.571
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 45 0 45 48
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="915">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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