<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 05:00:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 70% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 05:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" 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">
FF202610604160500001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.675" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.212" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.592" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="310.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="310.000" 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="2.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="310.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="301.582" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="269.159" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.384" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="46.252" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.940" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="24.459" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="47.120" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.020" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="12">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
310.000 320.000 325.000 330.000 337.500 340.000 351.875 363.750 374.627 386.681 400.115 415.179
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 84 0 78 75 75 0 0 0 72 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.5625 -1.5625 7.8125 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 -7.8125 1.5625 4.6875 4.6875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="564">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.01666 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.03334 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.05 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 301.582 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0
</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 0.35265058 0.35186794 0.35086685 0.34972504 0.34844565 0.34695974 0.34527344 0.34339368 0.3413282 0.33908543 0.33667454 0.33397174 0.33112615 0.3280849 0.32480147 0.32129753 0.3175958 0.31360513 0.30941707 0.30490252 0.30016452 0.29512694 0.28978533 0.28412992 0.27809128 0.2717235 0.26503444 0.25782603 0.25023073 0.2421369 0.23345439 0.2242087 0.21432664 0.20372157 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 0.20402162 0.2081819 0.21234219 0.21650247 0.22066276 0.22482306 0.22898334 0.23314363 0.23730391 0.24146421 0.2456245 0.24978478 0.25394508 0.25810537 0.26226565 0.26642594 0.27058622 0.2747465 0.2789068 0.28306708 0.28722736 0.29138768 0.29554796 0.29970825 0.30386853 0.30802882 0.3121891 0.3163494 0.32050967 0.32466996 0.32883024 0.33299056 0.33715084 0.34131113 0.3454714 0.3496317 0.35379198 0.354 0.37155288 0.39051732 0.40999448 0.4299968 0.45053756 0.47163713 0.49330145 0.5155517 0.5383947 0.5618396 0.5859059 0.6105947 0.6359249 0.6618971 0.68852925 0.7158206 0.74377966 0.7724079 0.80171496 0.8316996 0.86235756 0.8936949 0.9257068 0.95839125 0.99172884 1.0257225 1.0603509 1.0956135 1.1314796 1.1679326 1.2049562 1.242517 1.2805936 1.3191475 1.358156 1.3975692 1.4373573 1.477469 1.5178611 1.5584888 1.5993 1.640228 1.6812252 1.7222357 1.7631965 1.8040452 1.844705 1.8851265 1.9252372 1.9649643 2.0042439 2.0430036 2.0811822 2.1187036 2.1554966 2.191501 2.2266479 2.260868 2.294107 2.3262935 2.3573725 2.387281 2.4159667 2.4433699 2.4694464 2.4941463 2.517421 2.5392294 2.5595279 2.5782788 2.5954518 2.6110127 2.6249337 2.6371891 2.6477554 2.6566153 2.6637497 2.6691496 2.6728022 2.6747024 2.675 2.674924 2.6741326 2.6725 2.6700485 2.6668015 2.6627815 2.658012 2.652516 2.646316 2.6394358 2.631898 2.623725 2.6149395 2.605564 2.5956206 2.5851314 2.5741174 2.5626006 2.5506015 2.538141 2.5252392 2.5119164 2.4981918 2.4840848 2.4696143 2.4547985 2.4396555 2.4242032 2.4084582 2.3924375 2.3761578 2.3596344 2.3428833 2.3259194 2.3087575 2.2914116 2.2738957 2.2562232 2.2384071 2.2204602 2.2023942 2.1842215 2.1659534 2.147601 2.1291745 2.1106849 2.0921416 2.0735545 2.0549328 2.0362856 2.017621 1.9989477 1.9802734 1.9616057 1.942952 1.9243193 1.9057143 1.8871433 1.8686126 1.8501283 1.8316957 1.8133203 1.7950072 1.7767614 1.7585875 1.7404898 1.7224728 1.7045403 1.6866962 1.6689439 1.6512871 1.6337287 1.6162721 1.5989199 1.5816749 1.5645397 1.5475165 1.5306076 1.513815 1.4971409 1.4805869 1.4641546 1.4478457 1.4316616 1.4156035 1.3996727 1.3838702 1.3681971 1.3526542 1.3372422 1.3219619 1.306814 1.2917987 1.2769166 1.2621682 1.2475536 1.2330731 1.2187269 1.2045147 1.1904371 1.1764936 1.1626843 1.149009 1.1354674 1.1220593 1.1087846 1.0956426 1.082633 1.0697556 1.0570097 1.0443949 1.0319104 1.019556 1.0073309 0.9952344 0.98326594 0.9714248 0.9597103 0.9481216 0.936658 0.9253188 0.91410303 0.90301 0.8920388 0.88118863 0.8704586 0.8598479 0.8493555 0.8389806 0.8287223 0.81857955 0.8085516 0.7986374 0.788836 0.7791465 0.7695679 0.7600993 0.75073963 0.74148804 0.7323435 0.723305 0.7143716 0.7055424 0.69681627 0.68819237 0.6796696 0.67124707 0.6629238 0.6546988 0.64657104 0.6385396 0.63060355 0.6227619 0.61501366 0.60735786 0.5997936 0.5923199 0.58493584 0.5776404 0.5704328 0.5633119 0.5562769 0.5493269 0.5424609 0.535678 0.5289774 0.5223581 0.51581925 0.50935996 0.5029793 0.49667642 0.49045047 0.48430058 0.47822592 0.47222564 0.46629885 0.46044475 0.4546625 0.4489513 0.44331032 0.43773875 0.4322358 0.4268007 0.42143264 0.41613084 0.4108945 0.40572295 0.40061533 0.39557096 0.39058906 0.3856689 0.38080978 0.37601095 0.3712717 0.36659133 0.36196914 0.35740444 0.35289654 0.3484448 0.34404847 0.33970693 0.33541954 0.3311856 0.32700452 0.32287565 0.31879836 0.31477198 0.31079596 0.30686966 0.3029925 0.29916382 0.2953831 0.29164973 0.28796312 0.28432274 0.28072798 0.2771783 0.27367315 0.270212 0.26679426 0.26341948 0.26008704 0.2567965 0.25354728 0.2503389 0.2471709 0.24404271 0.24095388 0.2379039 0.23489231 0.23191862 0.22898237 0.2260831 0.22322035 0.22039366 0.21760258 0.21484669 0.21212552 0.20943868 0.20678571 0.20416619 0.20157972 0.19902588 0.19650427 0.19401447 0.1915561 0.18912876 0.18673207 0.18436565 0.18202911 0.17972207 0.17744419 0.17519508 0.1729744 0.17078176 0.16861685 0.1664793 0.16436876 0.16228491 0.16022742 0.15819593 0.15619014 0.15420972 0.15225434 0.1503237 0.14841749 0.1465354 0.14467712 0.14284235 0.1410308 0.13924219 0.1374762 0.13573259 0.13401103 0.13231128 0.13063304 0.12897606 0.12734005 0.12572476 0.124129936 0.12255531 0.121000625 0.11946563 0.11795008 0.11645373 0.11497634 0.113517664 0.11207747 0.110655524 0.109251596 0.10786546 0.10649689 0.10514566 0.10381156 0.102494374 0.101193875 0.09990986 0.09864212 0.09739045 0.09615465 0.094934516 0.09372985 0.09254046 0.09136615 0.09020673 0.089062 0.08793179 0.086815916 0.08571419 0.08462643 0.08355247 0.08249213 0.08144523 0.08041161 0.07939111 0.078383535 0.07738875 0.07640658 0.07543687 0.07447946 0.07353419 0.072600916 0.07167947 0.07076972 0.069871515 0.0689847 0.06810913 0.06724468 0.066391185 0.065548524 0.06471655 0.063895136 0.06308414 0.062283434 0.061492886 0.06071237 0.059941757 0.059180923 0.05842974 0.05768809 0.05695585 0.056232903 0.05551913 0.054814413 0.054118637 0.05343169 0.052753463 0.05208384 0.051422715 0.05076998 0.050125528

</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="2.675" PeakHeight="301.582" Num="5" zHalfNm="269.159" Error="1.539">
-79.425 -1.294 -0.056 0.265 -0.022
</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="6517.017" A="-1.10994039E11" B="3.425742E7" C="-2643.194" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.017" EndDistance="6554.033" A="0.0" B="192.73602" C="0.010460326" Error="0.00331"/>
<QuasiParabolic ID="3" StartDistance="6554.033" EndDistance="6586.0" A="3.11823462E10" B="-9588345.0" C="737.0839" Error="0.00331"/>
<QuasiParabolic ID="4" StartDistance="6586.0" EndDistance="6588.0" A="-4.88784101E11" B="1.48312192E8" C="-11250.506" Error="0.00215"/>
<QuasiParabolic ID="5" StartDistance="6588.0" EndDistance="6598.0" A="2.01278489E12" B="-6.1111981E8" C="46387.016" Error="0.0395"/>
<QuasiParabolic ID="6" StartDistance="6598.0" EndDistance="6614.0" A="1.89590484E12" B="-5.7569088E8" C="43702.19" Error="0.027"/>
<QuasiParabolic ID="7" StartDistance="6614.0" EndDistance="6621.0" A="4.8944408E12" B="-1.48241485E9" C="112248.0" Error="0.00453"/>
<QuasiParabolic ID="8" StartDistance="6621.0" EndDistance="6651.0" A="2.78970971E12" B="-8.4664045E8" C="64236.04" Error="0.0311"/>
<QuasiParabolic ID="9" StartDistance="6651.0" EndDistance="6671.582" A="-8.3606918E12" B="2.50635955E9" C="-187831.31" Error="0.0101"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.05" Depth="0.154"/>
<TopsideChapman PeakHeight="301.582" PeakDensity="88779.47" PeakScaleHeight="24.459" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
