<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 02:10:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 40% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 02:10:00</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">
FF202611004200210001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.685" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.948" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.075" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="267.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="267.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="290.901" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="261.169" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="245.847" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.861" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="21.811" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.458" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.217" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="23.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.650" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="29">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
267.500 267.500 267.500 267.500 268.750 270.000 270.000 272.500 275.000 275.000 275.000 275.000 275.000 275.000 275.000 277.500 277.500 280.000 282.500 282.500 282.500 282.500 282.500 285.000 285.000 285.751 287.175 290.901 326.196
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 63 69 69 66 78 84 87 84 69 75 57 54 0 60 72 72 84 81 75 78 78 75 78 78 72 72 72 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="334">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.75 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.5 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 220.25 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 261.169 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0
</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 0.35362422 0.35321164 0.35257575 0.35179353 0.3507929 0.34965166 0.3483729 0.3468153 0.34513062 0.34325272 0.34111932 0.33887988 0.3364047 0.33370727 0.330802 0.3277044 0.32436836 0.32081586 0.31701088 0.31298292 0.30870742 0.304116 0.29931185 0.29412317 0.28874603 0.28298274 0.27686438 0.27037144 0.26346487 0.25618252 0.24836415 0.2400988 0.23120971 0.22173098 0.21158703 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 0.2 0.2 0.2 0.2 0.2 0.2 0.20209524 0.20628572 0.21047619 0.21466666 0.21885714 0.22304761 0.22723809 0.23142858 0.23561905 0.23980953 0.244 0.24819048 0.25238097 0.25657144 0.26076192 0.2649524 0.26914287 0.27333334 0.27752382 0.2817143 0.28590477 0.29009524 0.2942857 0.2984762 0.30266666 0.30685714 0.3110476 0.3152381 0.31942856 0.32361904 0.3278095 0.332 0.33619046 0.34038097 0.34457144 0.34876192 0.3529524 0.354 0.3836579 0.4220863 0.46106762 0.50167936 0.5446153 0.59039617 0.63938135 0.69181174 0.74773437 0.8070596 0.8695067 0.9346281 1.0019583 1.0709567 1.1411536 1.2121075 1.2834985 1.355052 1.4265926 1.4980003 1.5691544 1.640022 1.7105407 1.7807008 1.850459 1.919785 1.9886086 2.0568647 2.1244304 2.191151 2.2567992 2.3210585 2.383506 2.4435344 2.500364 2.552972 2.6000311 2.6399662 2.6710017 2.6914017 2.6998188 2.7 2.6985753 2.6932158 2.6841009 2.6714718 2.6555693 2.636632 2.614894 2.5905848 2.563927 2.5351355 2.5044181 2.4719727 2.437989 2.4026465 2.3661158 2.3285577 2.2901235 2.2509549 2.2111847 2.1709363 2.1303246 2.089456 2.048429 2.0073338 1.9662538 1.9252648 1.8844365 1.8438319 1.8035082 1.7635169 1.7239045 1.6847124 1.6459775 1.6077324 1.5700059 1.5328227 1.4962047 1.4601701 1.4247347 1.3899112 1.35571 1.3221394 1.2892054 1.2569125 1.2252629 1.1942576 1.1638964 1.1341774 1.105098 1.0766541 1.0488408 1.0216526 0.9950832 0.9691255 0.9437719 0.9190144 0.8948444 0.871253 0.84823114 0.8257692 0.80385756 0.78248644 0.7616457 0.7413253 0.72151506 0.7022048 0.6833843 0.66504323 0.6471715 0.6297589 0.61279535 0.59627086 0.5801755 0.5644995 0.5492331 0.5343667 0.51989096 0.5057965 0.4920741 0.4787148 0.46570975 0.45305023 0.44072765 0.42873365 0.41706 0.4056986 0.3946416 0.3838812 0.37340987 0.36322019 0.35330486 0.34365684 0.33426917 0.32513508 0.31624794 0.30760133 0.29918888 0.29100442 0.283042 0.2752957 0.2677598 0.26042873 0.25329703 0.24635936 0.23961058 0.23304564 0.22665958 0.22044764 0.21440512 0.20852748 0.20281027 0.19724917 0.19183998 0.18657859 0.18146099 0.1764833 0.17164175 0.16693263 0.16235235 0.15789741 0.15356442 0.14935006 0.14525111 0.14126441 0.13738693 0.13361567 0.12994775 0.12638037 0.122910745 0.11953624 0.11625426 0.11306226 0.10995781 0.10693848 0.10400198 0.10114602 0.09836841 0.095667 0.093039714 0.09048452 0.08799944 0.08558256 0.083232015 0.08094598 0.0787227 0.076560445 0.07445754 0.07241237 0.07042334 0.068488926 0.066607624 0.06477797 0.062998556 0.061268 0.05958497 0.057948153 0.05635629 0.054808136 0.0533025 0.051838215 0.05041415

</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="2.7" PeakHeight="261.169" Num="5" zHalfNm="245.847" Error="0.695">
-38.197 -4.47 2.592 -1.29 0.446
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6516.75" A="-1.12596525E11" B="3.4752012E7" C="-2681.3572" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.75" EndDistance="6553.5" A="0.0" B="-1285.9109" C="0.23736383" Error="0.0287"/>
<QuasiParabolic ID="3" StartDistance="6553.5" EndDistance="6584.0" A="5.1936117E10" B="-1.5907258E7" C="1218.0643" Error="0.0287"/>
<QuasiParabolic ID="4" StartDistance="6584.0" EndDistance="6588.0" A="-6.0882407E11" B="1.8480968E8" C="-14024.717" Error="0.0179"/>
<QuasiParabolic ID="5" StartDistance="6588.0" EndDistance="6600.0" A="7.3185205E12" B="-2.22179174E9" C="168625.66" Error="0.0575"/>
<QuasiParabolic ID="6" StartDistance="6600.0" EndDistance="6625.0" A="9.8424544E12" B="-2.98662016E9" C="226567.2" Error="0.0571"/>
<QuasiParabolic ID="7" StartDistance="6625.0" EndDistance="6631.169" A="-5.4524631E13" B="1.64449536E10" C="-1239966.6" Error="0.00591"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="110.25" Depth="0.154"/>
<TopsideChapman PeakHeight="261.169" PeakDensity="90446.65" PeakScaleHeight="11.217" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
