<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 22:20:00.000"
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="2 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.21 (111) 22:20:00</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">
FF202611104212220001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.825" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.387" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.775" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="252.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="252.500" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="273.090" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="239.691" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="226.257" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.236" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="19.299" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.689" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="19.550" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.950" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
252.500 253.750 255.000 257.500 258.750 260.000 261.250 262.951 264.910 267.190 269.877 273.090 277.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 75 75 0 72 0 75 75 63 60 69 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 9.375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="312">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 141.45366 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 172.90733 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 204.361 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 239.691 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21213934 0.23390245 0.2526677 0.26895854 0.28319094 0.29565945 0.30659118 0.31614733 0.32445762 0.331616 0.33769703 0.34275886 0.34684667 0.3499937 0.352225 0.3535571 0.354 0.3538872 0.35354906 0.3529118 0.35205317 0.35097662 0.34968653 0.34811512 0.3462709 0.34416395 0.34180582 0.3392093 0.3363204 0.33315867 0.3297452 0.32597575 0.32194674 0.3175702 0.3128341 0.30779293 0.30239803 0.29654816 0.29037246 0.28370926 0.27655637 0.26896802 0.2607848 0.2519698 0.24250461 0.23225203 0.22125989 0.20925967 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2004537 0.20534979 0.21024589 0.21514198 0.22003807 0.22493416 0.22983025 0.23472634 0.23962243 0.24451852 0.24941461 0.2543107 0.2592068 0.26410288 0.26899898 0.27389506 0.27879116 0.28368723 0.28858334 0.2934794 0.29837552 0.3032716 0.3081677 0.3130638 0.31795987 0.32285598 0.32775205 0.33264816 0.33754423 0.34244034 0.3473364 0.35223252 0.354 0.3873509 0.44042683 0.4963326 0.5562927 0.62119836 0.6917562 0.76843697 0.85152674 0.9410404 1.0368023 1.138358 1.2451321 1.3564029 1.4714394 1.5894647 1.7097477 1.8316364 1.9545184 2.0777588 2.200829 2.3231418 2.4440851 2.5630398 2.679302 2.792133 2.9006202 3.0038397 3.1006856 3.1899974 3.2704878 3.3408515 3.3997648 3.4459975 3.4784703 3.4963863 3.5 3.4997103 3.4949067 3.4844792 3.468799 3.4482386 3.4231675 3.3939488 3.360938 3.32448 3.2849076 3.2425406 3.197684 3.1506286 3.1016493 3.0510051 2.99894 2.9456823 2.8914444 2.8364246 2.780806 2.724758 2.6684365 2.6119843 2.5555325 2.4991996 2.4430945 2.3873146 2.3319476 2.277073 2.222761 2.169074 2.1160676 2.0637896 2.0122824 1.9615821 1.9117194 1.8627205 1.8146065 1.7673949 1.7210989 1.6757289 1.6312916 1.5877912 1.5452292 1.5036048 1.4629153 1.423156 1.3843205 1.3464011 1.3093886 1.2732729 1.2380427 1.2036858 1.1701893 1.1375399 1.1057233 1.0747252 1.0445304 1.0151241 0.98649055 0.95861435 0.93147975 0.90507096 0.87937224 0.85436773 0.83004177 0.80637866 0.783363 0.76097924 0.7392123 0.7180471 0.6974687 0.6774626 0.65801424 0.63910955 0.6207345 0.6028755 0.585519 0.5686519 0.55226123 0.53633434 0.5208589 0.50582266 0.49121392 0.477021 0.4632326 0.44983768 0.43682542 0.4241853 0.41190705 0.3999806 0.3883962 0.37714434 0.3662157 0.35560122 0.34529212 0.33527976 0.32555583 0.31611213 0.3069408 0.29803404 0.2893844 0.28098455 0.27282742 0.26490602 0.25721368 0.24974385 0.24249016 0.23544641 0.22860661 0.2219649 0.2155156 0.20925316 0.20317224 0.1972676 0.19153418 0.18596703 0.18056136 0.17531253 0.17021601 0.16526741 0.16046242 0.15579695 0.15126692 0.14686844 0.14259769 0.13845098 0.13442472 0.13051543 0.12671971 0.123034276 0.119455926 0.11598157 0.11260819 0.109332845 0.106152706 0.103065 0.10006706 0.097156264 0.094330095 0.0915861 0.08892188 0.08633513 0.08382359 0.08138508 0.07901749 0.07671875 0.07448686 0.07231988 0.07021592 0.06817315 0.066189796 0.064264126 0.06239447 0.060579196 0.05881672 0.057105515 0.055444084 0.05383098 0.052264802 0.050744183

</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="3.5" PeakHeight="239.691" Num="5" zHalfNm="226.257" Error="0.384">
-34.776 -1.019 0.666 -0.38 0.179
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="13" 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="6511.454" A="-1.53486393E11" B="4.7372344E7" C="-3655.148" Error="0.00158"/>
<QuasiParabolic ID="2" StartDistance="6511.454" EndDistance="6542.907" A="0.0" B="254.40318" C="9.524584E-4" Error="0.00413"/>
<QuasiParabolic ID="3" StartDistance="6542.907" EndDistance="6544.0" A="-4.20656998E12" B="1.2855808E9" C="-98222.375" Error="0.00496"/>
<QuasiParabolic ID="4" StartDistance="6544.0" EndDistance="6557.0" A="1.50560391E11" B="-4.606058E7" C="3522.841" Error="0.038"/>
<QuasiParabolic ID="5" StartDistance="6557.0" EndDistance="6570.0" A="-2.34136535E10" B="7004553.0" C="-523.6079" Error="0.0127"/>
<QuasiParabolic ID="6" StartDistance="6570.0" EndDistance="6571.0" A="8.6644051E11" B="-2.6387952E8" C="20091.62" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6571.0" EndDistance="6573.0" A="-1.12609998E12" B="3.42585408E8" C="-26055.46" Error="0.00109"/>
<QuasiParabolic ID="8" StartDistance="6573.0" EndDistance="6581.0" A="1.34881791E13" B="-4.1041751E9" C="312204.12" Error="0.03"/>
<QuasiParabolic ID="9" StartDistance="6581.0" EndDistance="6584.0" A="2.77807461E13" B="-8.4477609E9" C="642213.7" Error="0.00337"/>
<QuasiParabolic ID="10" StartDistance="6584.0" EndDistance="6587.0" A="3.48031644E13" B="-1.05809377E10" C="804210.7" Error="0.00511"/>
<QuasiParabolic ID="11" StartDistance="6587.0" EndDistance="6602.0" A="2.47941709E13" B="-7.5419228E9" C="573527.94" Error="0.0374"/>
<QuasiParabolic ID="12" StartDistance="6602.0" EndDistance="6609.691" A="-8.7416384E13" B="2.64509747E10" C="-2000911.4" Error="0.00829"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="94.361" Depth="0.154"/>
<TopsideChapman PeakHeight="239.691" PeakDensity="151985.11" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
