<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 08:10:00.000"
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: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 08:10:00</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">
FF202611904290810001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.691" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.258" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.650" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.650" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.375" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="236.491" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="236.491" 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="2.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="252.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.650" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.650" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="246.348" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="224.721" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.721" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.896" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.823" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.913" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.570" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.670" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
236.491 238.513 240.748 243.234 245.000 250.000 252.500 257.500 262.500 267.500 272.500 280.000 290.000 302.500 317.500 340.000 367.803
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 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" >
-10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -7.8125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="407">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.51466 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 169.02933 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 198.544 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 246.348 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0
</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 0.352762 0.35182965 0.3506064 0.34909886 0.34724241 0.3451934 0.34281838 0.34013358 0.3371571 0.33384204 0.33021495 0.3263047 0.32201847 0.3173415 0.31227082 0.3068711 0.30100048 0.29463863 0.28793815 0.28059566 0.27276435 0.2642728 0.25520304 0.24531071 0.23464677 0.22304145 0.21048567 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 0.20506468 0.21028243 0.21550018 0.22071792 0.22593567 0.23115341 0.23637116 0.2415889 0.24680665 0.25202438 0.25724214 0.26245987 0.26767763 0.27289537 0.27811313 0.28333086 0.28854862 0.29376635 0.2989841 0.30420184 0.3094196 0.31463733 0.31985506 0.32507282 0.33029056 0.33550832 0.34072605 0.3459438 0.35116154 0.354 0.36649042 0.39772797 0.43428797 0.4755077 0.5201879 0.56717604 0.61571604 0.6654615 0.7163825 0.7686108 0.82238543 0.87799424 0.93581903 0.99624175 1.0597322 1.1267872 1.1979656 1.2738714 1.355149 1.4424053 1.536073 1.6362722 1.7424916 1.8533194 1.9663117 2.0783083 2.1861885 2.2874954 2.380784 2.4656105 2.542119 2.610804 2.6723247 2.7273486 2.7764926 2.8203049 2.859272 2.8937995 2.9242504 2.950906 2.9740224 2.9938028 3.0104144 3.0239954 3.0346565 3.042481 3.0475273 3.0498354 3.05 3.049561 3.0472164 3.0429184 3.0367458 3.0287778 3.0190942 3.0077746 2.9948974 2.980541 2.9647822 2.9476976 2.9293618 2.909848 2.8892274 2.8675706 2.8449454 2.821418 2.7970526 2.7719116 2.7460554 2.7195418 2.6924267 2.6647644 2.6366067 2.6080034 2.579002 2.5496483 2.519986 2.4900565 2.4599 2.4295537 2.399054 2.3684351 2.3377295 2.3069673 2.2761781 2.2453892 2.2146263 2.183914 2.153275 2.122731 2.0923023 2.0620074 2.0318644 2.0018897 1.9720984 1.942505 1.9131227 1.8839636 1.8550391 1.8263596 1.7979345 1.7697728 1.7418821 1.7142698 1.6869422 1.6599054 1.6331644 1.6067239 1.5805879 1.5547599 1.5292429 1.5040394 1.4791516 1.4545811 1.4303292 1.4063967 1.3827844 1.3594921 1.3365201 1.3138677 1.2915345 1.2695196 1.2478218 1.2264397 1.2053719 1.1846166 1.1641718 1.1440356 1.1242057 1.1046797 1.0854553 1.0665299 1.0479006 1.0295647 1.0115196 0.99376196 0.976289 0.9590975 0.9421845 0.92554677 0.909181 0.893084 0.8772525 0.86168313 0.8463726 0.83131754 0.8165147 0.80196047 0.7876517 0.7735849 0.7597568 0.74616396 0.732803 0.71967065 0.70676357 0.6940784 0.68161184 0.66936064 0.6573216 0.64549136 0.6338668 0.62244475 0.611222 0.60019547 0.589362 0.5787186 0.5682622 0.55798984 0.5478985 0.5379852 0.5282471 0.5186813 0.50928503 0.50005543 0.4909897 0.4820852 0.4733392 0.464749 0.45631203 0.44802567 0.4398874 0.4318947 0.42404503 0.41633603 0.40876523 0.4013303 0.39402884 0.3868586 0.3798173 0.3729027 0.3661126 0.35944483 0.35289726 0.34646776 0.34015432 0.33395487 0.32786742 0.32189 0.31602067 0.3102575 0.30459866 0.29904225 0.29358652 0.2882296 0.28296986 0.27780545 0.27273476 0.26775604 0.26286772 0.25806817 0.25335577 0.24872902 0.24418633 0.23972623 0.23534723 0.23104785 0.22682671 0.22268237 0.21861346 0.21461862 0.21069652 0.20684583 0.20306529 0.19935364 0.1957096 0.19213198 0.18861958 0.1851712 0.1817857 0.17846194 0.1751988 0.17199518 0.16885 0.16576222 0.16273078 0.15975466 0.15683287 0.1539644 0.15114832 0.14838363 0.14566945 0.1430048 0.14038885 0.13782066 0.13529938 0.13282417 0.13039418 0.12800857 0.12566657 0.123367354 0.12111016 0.11889422 0.11671878 0.1145831 0.11248645 0.11042814 0.10840745 0.106423706 0.10447623 0.10256436 0.100687444 0.098844856 0.09703595 0.095260136 0.09351679 0.09180533 0.09012517 0.08847574 0.086856484 0.08526684 0.083706275 0.08217426 0.08067026 0.07919378 0.07774431 0.076321356 0.07492443 0.07355307 0.072206795 0.07088515 0.069587685 0.06831396 0.06706355 0.06583601 0.06463093 0.06344791 0.062286533 0.06114641 0.060027145 0.058928363 0.05784969 0.056790758 0.055751204 0.054730676 0.053728823 0.052745305 0.051779784 0.050831936

</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="3.05" PeakHeight="246.348" Num="5" zHalfNm="224.721" Error="2.955">
-52.21 7.92 -5.524 2.937 -0.927
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6509.515" A="-1.7421933E11" B="5.3771396E7" C="-4148.9023" Error="0.0015"/>
<QuasiParabolic ID="2" StartDistance="6509.515" EndDistance="6539.029" A="0.0" B="-611.8037" C="0.1340049" Error="0.0111"/>
<QuasiParabolic ID="3" StartDistance="6539.029" EndDistance="6568.0" A="5.8482504E10" B="-1.7970618E7" C="1380.5222" Error="0.0111"/>
<QuasiParabolic ID="4" StartDistance="6568.0" EndDistance="6569.0" A="1.46220253E13" B="-4.4526669E9" C="338979.22" Error="4.72E-10"/>
<QuasiParabolic ID="5" StartDistance="6569.0" EndDistance="6581.0" A="6.6072546E12" B="-2.01248704E9" C="153244.7" Error="0.01"/>
<QuasiParabolic ID="6" StartDistance="6581.0" EndDistance="6584.0" A="1.50674531E13" B="-4.5835853E9" C="348587.22" Error="0.00496"/>
<QuasiParabolic ID="7" StartDistance="6584.0" EndDistance="6596.0" A="2.76815843E13" B="-8.4153385E9" C="639577.0" Error="0.0162"/>
<QuasiParabolic ID="8" StartDistance="6596.0" EndDistance="6602.0" A="-3.9021837E13" B="1.18100777E10" C="-893580.7" Error="0.00927"/>
<QuasiParabolic ID="9" StartDistance="6602.0" EndDistance="6616.348" A="-1.6956554E13" B="5.1256535E9" C="-387338.3" Error="0.00465"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="88.544" Depth="0.154"/>
<TopsideChapman PeakHeight="246.348" PeakDensity="115415.63" PeakScaleHeight="16.913" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
