<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-12 -132 02:50:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.12 (132) 02:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202613205120250001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.125" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.666" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.456" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.925" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.925" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.475" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="285.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.925" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.925" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="259.902" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="245.102" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.861" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="21.187" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.591" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.114" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="21.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.030" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="9">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 282.500 282.500 282.500 283.750 285.000 292.500 300.000 321.107
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 57 60 60 66 75 84 90 87
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="336">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.535 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.07 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 222.605 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 259.902 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0
</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 0.35369936 0.35321155 0.35265046 0.35186782 0.3509409 0.34987223 0.3485916 0.34710422 0.34548807 0.3436766 0.3416772 0.33949807 0.33714813 0.3345699 0.3317773 0.32884964 0.32567245 0.32226676 0.31865487 0.31480208 0.31068197 0.3063855 0.30178827 0.29686782 0.29171225 0.28629372 0.28043687 0.27434912 0.26785085 0.2609266 0.25363803 0.24585946 0.23757431 0.22873113 0.21933179 0.20925057 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 0.2 0.20381564 0.20791848 0.2120213 0.21612415 0.22022699 0.22432983 0.22843267 0.2325355 0.23663834 0.24074118 0.24484402 0.24894685 0.2530497 0.25715253 0.26125535 0.2653582 0.26946104 0.27356386 0.27766672 0.28176954 0.2858724 0.28997523 0.29407805 0.2981809 0.30228373 0.30638656 0.31048942 0.31459224 0.3186951 0.32279792 0.32690075 0.3310036 0.33510643 0.33920926 0.3433121 0.34741494 0.3515178 0.354 0.3710397 0.4163185 0.465017 0.5174974 0.5740352 0.634855 0.7000951 0.76986074 0.84412366 0.92281413 1.0057625 1.0927328 1.1834369 1.2774991 1.3745453 1.4741195 1.5757629 1.6789728 1.7832062 1.887952 1.9925996 2.096585 2.1992915 2.3000607 2.3982186 2.493103 2.5839882 2.6701725 2.7509139 2.8254845 2.893188 2.953334 3.0052824 3.0484593 3.0823662 3.1065924 3.1208475 3.125 3.1249764 3.1220832 3.114558 3.102687 3.0867567 3.0670536 3.0438595 3.0174522 2.9881015 2.9560697 2.9216099 2.8849642 2.8463657 2.8060348 2.7641816 2.7210042 2.6766896 2.631413 2.5853384 2.5386188 2.4913971 2.4438052 2.395965 2.3479893 2.2999818 2.252037 2.2042413 2.156674 2.109406 2.062502 2.01602 1.9700122 1.9245247 1.8795984 1.8352696 1.7915697 1.748526 1.7061621 1.6644977 1.6235493 1.5833305 1.5438519 1.5051215 1.4671452 1.4299269 1.3934679 1.3577687 1.3228273 1.288641 1.2552053 1.2225149 1.1905633 1.1593434 1.1288465 1.0990642 1.0699869 1.0416045 1.0139067 0.9868824 0.96052045 0.93480945 0.90973765 0.88529325 0.86146414 0.8382383 0.81560355 0.79354775 0.77205867 0.75112426 0.7307324 0.710871 0.6915282 0.67269224 0.6543514 0.6364941 0.6191089 0.60218465 0.5857102 0.5696747 0.5540673 0.5388776 0.5240951 0.5097097 0.49571142 0.48209044 0.46883717 0.45594224 0.44339645 0.43119076 0.41931638 0.40776473 0.39652735 0.38559604 0.37496272 0.36461955 0.35455889 0.3447732 0.33525524 0.32599783 0.316994 0.30823705 0.2997203 0.29143727 0.28338173 0.27554753 0.2679287 0.2605194 0.25331396 0.24630688 0.23949276 0.23286636 0.22642256 0.2201564 0.21406303 0.20813775 0.20237595 0.19677319 0.19132507 0.18602741 0.18087605 0.175867 0.17099635 0.16626032 0.16165517 0.15717734 0.15282333 0.14858972 0.1444732 0.14047055 0.13657863 0.1327944 0.12911488 0.12553719 0.12205852 0.11867613 0.11538739 0.11218969 0.10908052 0.10605745 0.10311809 0.10026013 0.09748132 0.09477948 0.09215247 0.08959822 0.08711474 0.084700055 0.08235226 0.08006952 0.07785002 0.07569201 0.07359381 0.071553744 0.069570206 0.06764163 0.065766506 0.06394334 0.06217071 0.0604472 0.058771458 0.05714216 0.055558022 0.054017786 0.052520245 0.05106421

</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="3.125" PeakHeight="259.902" Num="5" zHalfNm="245.102" Error="0.214">
-37.144 -0.284 0.194 -0.112 0.049
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6517.535" A="-1.07962499E11" B="3.332176E7" C="-2570.998" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.535" EndDistance="6555.07" A="0.0" B="-1416.9218" C="0.25744104" Error="0.0321"/>
<QuasiParabolic ID="3" StartDistance="6555.07" EndDistance="6589.0" A="4.7712244E10" B="-1.4613891E7" C="1119.0549" Error="0.0321"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6591.0" A="-1.19614512E12" B="3.62941856E8" C="-27531.404" Error="0.00278"/>
<QuasiParabolic ID="5" StartDistance="6591.0" EndDistance="6599.0" A="1.07325329E13" B="-3.25674496E9" C="247061.73" Error="0.0342"/>
<QuasiParabolic ID="6" StartDistance="6599.0" EndDistance="6610.0" A="2.14788085E13" B="-6.5136855E9" C="493837.06" Error="0.0276"/>
<QuasiParabolic ID="7" StartDistance="6610.0" EndDistance="6621.0" A="1.48188063E13" B="-4.4985564E9" C="341406.72" Error="0.0261"/>
<QuasiParabolic ID="8" StartDistance="6621.0" EndDistance="6629.902" A="-5.4862843E13" B="1.65501215E10" C="-1248132.5" Error="0.00769"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="112.605" Depth="0.154"/>
<TopsideChapman PeakHeight="259.902" PeakDensity="121161.6" PeakScaleHeight="11.114" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
