<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-18 -108 05:25:00.000"
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="15.0">
<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="2 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 1 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" >
2026.04.18 (108) 05:25:00</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">
FF202610804180525001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.225" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.625" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.689" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.575" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="275.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="245.390" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.725" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.377" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="42.125" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.234" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.162" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="33.260" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.830" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="48">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.05 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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 220.000 221.250 222.500 222.500 222.500 225.000 225.000 225.000 225.000 225.000 227.500 227.500 230.000 230.000 230.000 232.500 232.500 232.500 235.000 237.500 237.500 237.500 240.000 242.500 240.000 245.000 247.500 247.500 247.500 252.500 255.000 257.500 257.500 260.000 262.500 265.000 267.500 270.000 272.500 275.000 279.803 285.802 293.509 303.775 318.126 339.608 375.291
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 72 0 75 75 90 87 69 69 54 54 63 63 63 63 78 75 78 72 63 60 66 66 78 78 66 66 63 69 69 66 51 51 54 51 0 0 0 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>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="502">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
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</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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</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="3.225" PeakHeight="245.39" Num="5" zHalfNm="215.725" Error="1.283">
-68.332 16.699 -10.124 4.348 -0.981
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0205" EndDistance="6480.001" A="-5.5027394E11" B="1.69837632E8" C="-13104.63" Error="0.0016"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6505.667" A="-2.30120505E11" B="7.1024848E7" C="-5480.187" Error="0.00139"/>
<QuasiParabolic ID="2" StartDistance="6505.667" EndDistance="6531.333" A="0.0" B="-97.33475" C="0.054973055" Error="0.00176"/>
<QuasiParabolic ID="3" StartDistance="6531.333" EndDistance="6556.0" A="6.8585095E10" B="-2.1103024E7" C="1623.3059" Error="0.00176"/>
<QuasiParabolic ID="4" StartDistance="6556.0" EndDistance="6558.0" A="7.4996358E12" B="-2.28804941E9" C="174514.28" Error="2.4E-10"/>
<QuasiParabolic ID="5" StartDistance="6558.0" EndDistance="6559.0" A="6.3064076E12" B="-1.9241495E9" C="146769.55" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6559.0" EndDistance="6565.0" A="3.72490502E12" B="-1.13698611E9" C="86763.18" Error="0.00528"/>
<QuasiParabolic ID="7" StartDistance="6565.0" EndDistance="6569.0" A="6.2734598E12" B="-1.91339277E9" C="145895.45" Error="0.00125"/>
<QuasiParabolic ID="8" StartDistance="6569.0" EndDistance="6575.0" A="1.20678735E13" B="-3.67756186E9" C="280175.34" Error="0.00897"/>
<QuasiParabolic ID="9" StartDistance="6575.0" EndDistance="6584.0" A="3.6988212E13" B="-1.12578929E10" C="856626.3" Error="0.0099"/>
<QuasiParabolic ID="10" StartDistance="6584.0" EndDistance="6596.0" A="-2.5015131E13" B="7.5766584E9" C="-573701.06" Error="0.00953"/>
<QuasiParabolic ID="11" StartDistance="6596.0" EndDistance="6615.39" A="-9.3180909E12" B="2.81709517E9" C="-212909.4" Error="0.00488"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="77.0" Depth="0.154"/>
<TopsideChapman PeakHeight="245.39" PeakDensity="129040.016" PeakScaleHeight="23.162" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
