<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 06:15:00.000"
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) 06:15:00</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">
FF202611904290615001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.475" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.435" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.936" 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="3.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="293.445" 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="277.630" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.209" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.265" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="37.784" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.290" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.401" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.600" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.020" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 265.000 265.000 265.000 267.500 272.500 275.000 277.500 282.500 285.000 285.000 290.000 293.445 297.415 302.041 307.500 314.039 322.015 331.959 344.701 361.616 385.157 420.163
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 69 72 72 84 84 81 84 84 84 84 81 81 78 75 81 102 99 72 75 84 81 54
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="496">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 277.63 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0
</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 0.35313663 0.3524263 0.35157037 0.35049725 0.34921128 0.34779054 0.3460947 0.34420434 0.34212717 0.33980232 0.33724248 0.33452845 0.33153966 0.32836035 0.32488185 0.3211927 0.3171983 0.31299222 0.3084957 0.30364835 0.2985621 0.29312387 0.2873491 0.2811647 0.27462557 0.26766586 0.26023185 0.25232056 0.24386445 0.23482597 0.2251332 0.21472648 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 0.2044 0.2088 0.2132 0.2176 0.222 0.2264 0.2308 0.2352 0.2396 0.244 0.2484 0.2528 0.2572 0.2616 0.266 0.2704 0.2748 0.2792 0.2836 0.288 0.2924 0.2968 0.3012 0.3056 0.31 0.3144 0.3188 0.3232 0.3276 0.332 0.3364 0.3408 0.3452 0.3496 0.354 0.3775018 0.4039992 0.43345642 0.46564195 0.5002019 0.53674227 0.5749186 0.61446863 0.65521425 0.6970898 0.74007076 0.7841916 0.8295099 0.8761136 0.9241269 0.9736665 1.0248774 1.0779 1.1328933 1.190038 1.2494841 1.3114246 1.3760157 1.4434185 1.5137718 1.5871353 1.6635878 1.7430389 1.825361 1.9102267 1.9972328 2.0857487 2.1750677 2.2643566 2.3527498 2.4394152 2.5235913 2.604685 2.6822002 2.7558236 2.8253644 2.8907382 2.9519496 3.0090704 3.0621927 3.1114504 3.156983 3.1989284 3.2374477 3.2726586 3.3047066 3.3337004 3.3597543 3.3829596 3.403411 3.4211814 3.4363344 3.4489317 3.459016 3.4666257 3.471787 3.4745204 3.475 3.4748888 3.4734912 3.470532 3.466062 3.460133 3.4527967 3.4441044 3.4341078 3.422858 3.4104066 3.3968039 3.3820999 3.366344 3.3495855 3.331872 3.3132508 3.2937682 3.2734697 3.2523997 3.2306015 3.2081175 3.1849892 3.1612566 3.1369586 3.1121337 3.0868185 3.0610487 3.0348592 3.0082831 2.981353 2.9541004 2.926555 2.898746 2.8707013 2.8424482 2.8140123 2.7854185 2.7566905 2.7278514 2.698923 2.6699264 2.6408813 2.611807 2.582722 2.5536435 2.5245879 2.4955711 2.4666083 2.4377134 2.4089003 2.3801813 2.3515692 2.3230748 2.2947092 2.2664828 2.2384048 2.2104845 2.1827302 2.15515 2.127751 2.1005409 2.0735252 2.0467107 2.0201025 1.9937061 1.9675261 1.9415668 1.9158323 1.8903263 1.8650521 1.8400127 1.8152107 1.7906488 1.7663288 1.7422528 1.7184224 1.6948389 1.6715034 1.648417 1.6255802 1.6029937 1.5806578 1.5585726 1.5367382 1.5151544 1.4938208 1.4727371 1.4519026 1.4313166 1.4109784 1.3908869 1.371041 1.35144 1.332082 1.3129661 1.2940909 1.2754548 1.2570561 1.2388935 1.2209651 1.2032694 1.1858044 1.1685683 1.1515592 1.1347753 1.1182145 1.101875 1.0857546 1.0698514 1.0541631 1.038688 1.0234236 1.0083678 0.9935187 0.978874 0.9644316 0.95018923 0.93614477 0.922296 0.90864074 0.8951768 0.88190204 0.86881423 0.8559112 0.8431908 0.83065075 0.818289 0.8061033 0.7940915 0.78225154 0.77058125 0.7590785 0.74774116 0.7365672 0.72555447 0.71470094 0.7040045 0.69346327 0.683075 0.67283785 0.66274977 0.6528087 0.6430129 0.6333602 0.62384886 0.61447686 0.6052424 0.5961435 0.58717835 0.5783452 0.5696421 0.5610674 0.5526193 0.5442959 0.5360956 0.52801675 0.52005744 0.51221615 0.5044912 0.49688095 0.48938373 0.48199797 0.4747221 0.4675545 0.4604937 0.45353818 0.44668636 0.43993682 0.43328804 0.4267386 0.420287 0.41393197 0.407672 0.40150574 0.39543182 0.3894489 0.3835557 0.37775087 0.37203312 0.3664012 0.36085382 0.35538977 0.35000783 0.3447068 0.33948547 0.33434266 0.32927725 0.32428807 0.319374 0.31453392 0.30976677 0.30507144 0.3004469 0.29589206 0.29140592 0.28698745 0.28263563 0.2783495 0.27412805 0.26997033 0.2658754 0.2618423 0.25787014 0.253958 0.25010496 0.24631017 0.24257275 0.23889184 0.23526658 0.23169616 0.22817975 0.22471654 0.22130574 0.21794654 0.2146382 0.21137993 0.208171 0.20501064 0.20189816 0.1988328 0.19581386 0.19284068 0.18991253 0.18702874 0.18418865 0.1813916 0.17863694 0.17592403 0.17325225 0.17062098 0.16802959 0.1654775 0.1629641 0.16048881 0.15805107 0.1556503 0.15328595 0.15095745 0.14866428 0.1464059 0.14418179 0.14199142 0.13983427 0.13770987 0.1356177 0.13355729 0.13152814 0.12952979 0.12756178 0.12562363 0.1237149 0.12183515 0.119983934 0.11816082 0.11636539 0.114597216 0.11285589 0.111140996 0.10945215 0.10778894 0.10615099 0.10453792 0.102949336 0.10138488 0.09984419 0.09832689 0.09683264 0.095361084 0.09391188 0.09248468 0.09107917 0.089695 0.088331856 0.086989425 0.08566738 0.08436542 0.08308324 0.08182054 0.08057702 0.079352394 0.078146376 0.07695868 0.07578902 0.07463714 0.07350276 0.07238561 0.071285434 0.07020198 0.06913498 0.0680842 0.067049384 0.06603029 0.065026686 0.06403833 0.06306499 0.062106445 0.061162464 0.06023283 0.05931732 0.058415722 0.057527825 0.05665342 0.055792306 0.054944277 0.054109138 0.053286687 0.052476738 0.051679093 0.050893575 0.050119996

</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="3.475" PeakHeight="277.63" Num="5" zHalfNm="251.209" Error="2.75">
-66.204 6.575 -4.767 2.636 -0.87
</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="6515.0" A="-1.24071371E11" B="3.8293632E7" C="-2954.6301" Error="0.00182"/>
<QuasiParabolic ID="2" StartDistance="6515.0" EndDistance="6550.0" A="0.0" B="1288.1118" C="-0.15767518" Error="0.0254"/>
<QuasiParabolic ID="3" StartDistance="6550.0" EndDistance="6578.0" A="1.89138842E10" B="-5863689.0" C="454.40134" Error="0.0254"/>
<QuasiParabolic ID="4" StartDistance="6578.0" EndDistance="6584.0" A="2.1949399E11" B="-6.684882E7" C="5089.939" Error="0.0107"/>
<QuasiParabolic ID="5" StartDistance="6584.0" EndDistance="6604.0" A="5.1306352E12" B="-1.55869005E9" C="118382.86" Error="0.0369"/>
<QuasiParabolic ID="6" StartDistance="6604.0" EndDistance="6622.0" A="1.7960383E13" B="-5.4441375E9" C="412556.66" Error="0.00885"/>
<QuasiParabolic ID="7" StartDistance="6622.0" EndDistance="6647.63" A="-1.68995764E13" B="5.0843914E9" C="-382409.28" Error="0.0034"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.0" Depth="0.154"/>
<TopsideChapman PeakHeight="277.63" PeakDensity="149821.66" PeakScaleHeight="20.401" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
