<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 07:30:00.000"
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" >
2026.04.29 (119) 07:30:00</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">
FF202611904290730001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.637" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.276" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.225" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="240.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="240.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.725" 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="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="250.686" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="229.886" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.801" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.724" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.287" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.993" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.950" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="39">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 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 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
240.000 240.833 241.667 242.500 242.500 242.500 245.000 247.500 247.500 247.500 247.500 247.500 247.500 250.000 250.000 250.000 252.500 255.000 255.000 257.500 257.500 257.500 260.000 262.500 262.500 265.000 265.000 270.000 272.500 275.000 275.000 280.000 282.500 285.000 295.000 300.000 310.584 328.805 367.599
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 0 75 81 87 102 93 81 78 84 84 111 114 93 90 102 87 87 84 81 75 81 81 81 78 84 87 81 75 69 72 69 66 90 87 90 81 84
</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 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="410">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.33333 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 170.66667 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 250.686 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0
</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 0.35347393 0.35283697 0.35190412 0.35075444 0.34931904 0.34760568 0.34569573 0.3434548 0.34089813 0.338043 0.33497614 0.33158195 0.3278234 0.3237977 0.31935477 0.31466332 0.30954042 0.30405807 0.29813874 0.29176548 0.28499955 0.27773643 0.26987928 0.2613832 0.2523016 0.2425206 0.23193197 0.22042523 0.20793872 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 0.20169231 0.20676923 0.21184616 0.21692307 0.222 0.22707692 0.23215385 0.23723076 0.2423077 0.24738462 0.25246155 0.25753847 0.26261538 0.2676923 0.27276924 0.27784616 0.28292307 0.288 0.29307693 0.29815385 0.30323076 0.30830768 0.31338462 0.31846154 0.32353845 0.3286154 0.3336923 0.33876923 0.34384614 0.3489231 0.354 0.3878718 0.42606395 0.46816158 0.51364285 0.56203926 0.61302686 0.6664441 0.72225046 0.7805402 0.8414637 0.9052531 0.97218096 1.0425591 1.1167357 1.1950989 1.2780548 1.3660426 1.4594421 1.558631 1.6638495 1.7752405 1.8926086 2.0154467 2.1428065 2.2732837 2.4051468 2.5363622 2.664979 2.7892392 2.9077961 3.019689 3.1243575 3.221579 3.3113098 3.3937519 3.4691072 3.5376692 3.59975 3.6556523 3.7056453 3.7499943 3.788939 3.822672 3.8513892 3.8752239 3.8943121 3.9087496 3.9186084 3.9239428 3.925 3.9248528 3.9224572 3.9172199 3.9092615 3.8987024 3.885664 3.870267 3.8526313 3.8328762 3.8111184 3.7874737 3.762055 3.7349734 3.706337 3.6762512 3.6448183 3.6121376 3.578305 3.5434134 3.5075524 3.4708078 3.4332628 3.3949964 3.3560846 3.3166003 3.2766128 3.2361882 3.1953895 3.1542768 3.1129067 3.071333 3.0296068 2.9877763 2.9458869 2.9039817 2.8621004 2.8202815 2.7785602 2.7369695 2.695541 2.6543033 2.6132834 2.5725067 2.531996 2.4917731 2.4518578 2.4122684 2.3730214 2.3341327 2.2956157 2.2574832 2.219747 2.1824172 2.145503 2.1090126 2.0729535 2.0373316 2.0021524 1.9674209 1.9331406 1.8993148 1.8659459 1.8330358 1.8005856 1.7685962 1.7370677 1.7059997 1.6753916 1.645242 1.6155496 1.5863123 1.5575279 1.5291939 1.5013074 1.4738653 1.4468642 1.4203007 1.3941709 1.3684709 1.3431965 1.3183435 1.2939076 1.2698842 1.2462687 1.2230563 1.2002424 1.1778219 1.1557899 1.1341416 1.1128716 1.0919753 1.0714473 1.0512825 1.0314759 1.0120224 0.99291664 0.97415364 0.95572835 0.93763554 0.91987014 0.9024272 0.8853016 0.8684883 0.85198236 0.8357789 0.819873 0.8042598 0.7889344 0.77389216 0.7591283 0.74463814 0.73041713 0.7164606 0.7027641 0.6893232 0.6761334 0.66319036 0.65048987 0.63802755 0.62579936 0.6138011 0.60202867 0.5904781 0.5791455 0.56802684 0.5571183 0.54641616 0.5359167 0.5256162 0.51551104 0.5055977 0.4958727 0.48633254 0.47697386 0.46779332 0.45878762 0.4499536 0.441288 0.43278778 0.4244498 0.41627112 0.40824872 0.40037972 0.3926612 0.38509044 0.3776646 0.370381 0.36323696 0.35622984 0.3493571 0.34261617 0.3360046 0.32951996 0.32315978 0.3169218 0.31080362 0.30480304 0.2989178 0.29314572 0.28748465 0.28193244 0.27648708 0.27114654 0.26590878 0.26077184 0.25573385 0.2507929 0.24594711 0.24119468 0.23653384 0.23196281 0.22747992 0.22308344 0.21877173 0.21454318 0.21039617 0.20632915 0.2023406 0.19842902 0.1945929 0.1908308 0.18714133 0.18352306 0.17997463 0.17649472 0.173082 0.16973516 0.16645296 0.16323414 0.1600775 0.15698181 0.15394594 0.1509687 0.14804898 0.14518566 0.14237767 0.13962395 0.13692343 0.1342751 0.13167794 0.12913097 0.12663324 0.12418378 0.12178167 0.11942599 0.11711585 0.11485036 0.11262867 0.11044993 0.108313315 0.10621801 0.104163215 0.10214815 0.10017205 0.098234154 0.096333735 0.09447007 0.09264244 0.09085015 0.08909252 0.08736889 0.08567859 0.08402098 0.08239543 0.080801316 0.079238035 0.077704996 0.0762016 0.07472729 0.0732815 0.071863666 0.07047326 0.06910975 0.06777261 0.06646135 0.065175444 0.06391441 0.06267778 0.061465062 0.06027581 0.059109565 0.05796588 0.05684432 0.055744454 0.05466587 0.053608153 0.052570894 0.051553708 0.050556198

</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="3.925" PeakHeight="250.686" Num="5" zHalfNm="229.886" Error="1.386">
-52.746 5.56 -3.962 2.02 -0.558
</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="6510.333" A="-1.64983013E11" B="5.0920684E7" C="-3928.9397" Error="0.00156"/>
<QuasiParabolic ID="2" StartDistance="6510.333" EndDistance="6540.667" A="0.0" B="-96.642426" C="0.054867446" Error="0.0023"/>
<QuasiParabolic ID="3" StartDistance="6540.667" EndDistance="6542.0" A="1.22438772E12" B="-3.7443664E8" C="28627.164" Error="0.00415"/>
<QuasiParabolic ID="4" StartDistance="6542.0" EndDistance="6544.0" A="-3.51813272E11" B="1.07434648E8" C="-8201.886" Error="0.00909"/>
<QuasiParabolic ID="5" StartDistance="6544.0" EndDistance="6570.0" A="5.7859072E10" B="-1.7770832E7" C="1364.5474" Error="0.01"/>
<QuasiParabolic ID="6" StartDistance="6570.0" EndDistance="6572.0" A="1.02850143E13" B="-3.13106022E9" C="238296.77" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6572.0" EndDistance="6579.0" A="7.2807754E12" B="-2.21680589E9" C="168740.0" Error="0.00477"/>
<QuasiParabolic ID="8" StartDistance="6579.0" EndDistance="6584.0" A="1.24271901E13" B="-3.78130355E9" C="287640.84" Error="0.00308"/>
<QuasiParabolic ID="9" StartDistance="6584.0" EndDistance="6588.0" A="2.23759198E13" B="-6.8033961E9" C="517143.62" Error="0.00112"/>
<QuasiParabolic ID="10" StartDistance="6588.0" EndDistance="6596.0" A="4.1070784E13" B="-1.24788255E10" C="947883.56" Error="0.00814"/>
<QuasiParabolic ID="11" StartDistance="6596.0" EndDistance="6601.0" A="2.34771385E13" B="-7.1441848E9" C="543499.06" Error="0.00652"/>
<QuasiParabolic ID="12" StartDistance="6601.0" EndDistance="6620.686" A="-3.43860681E13" B="1.03874642E10" C="-784454.94" Error="0.00316"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="91.0" Depth="0.154"/>
<TopsideChapman PeakHeight="250.686" PeakDensity="191136.78" PeakScaleHeight="15.993" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
