<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-09 -129 02:00:00.000"
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: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.09 (129) 02:00:00</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">
FF202612905090200001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.439" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.497" 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="4.275" 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="0.225" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="301.002" 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="263.931" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.597" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.181" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="37.622" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.621" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.199" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="41">
<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 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" >
240.000 240.000 240.000 240.000 242.500 242.500 245.000 245.000 247.500 247.500 250.000 252.500 252.500 255.000 257.500 257.500 257.500 262.500 265.000 265.000 267.500 272.500 275.000 277.500 282.500 287.500 289.159 291.002 293.061 295.378 298.003 301.002 304.461 308.496 313.263 318.981 325.965 334.690 345.899 360.828 381.698
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 63 69 69 81 81 93 93 96 96 105 102 105 102 99 102 105 105 72 69 105 108 81 78 78 75 78 78 75 66 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" >
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 -10.9375 -1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="489">
<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 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 263.931 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0
</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 0.38340712 0.41468975 0.44763774 0.48206726 0.51788956 0.5550483 0.5935307 0.633372 0.6746329 0.71738523 0.76172876 0.8077882 0.85568607 0.90556425 0.9575921 1.0119157 1.068723 1.1282142 1.1905845 1.256018 1.324732 1.3969043 1.4727248 1.5523145 1.6357473 1.7230405 1.8140944 1.9086626 2.0063782 2.1066773 2.2088912 2.312168 2.4156032 2.5183008 2.6193345 2.7179327 2.8134136 2.9052768 2.9931116 3.0766938 3.15586 3.2305722 3.3008351 3.3667033 3.428278 3.4856691 3.53899 3.5883722 3.633933 3.6758149 3.7141113 3.7489355 3.7803948 3.808576 3.8335536 3.8554049 3.8741927 3.8899722 3.9027848 3.9126694 3.9196544 3.9237583 3.925 3.9249954 3.9239383 3.9210649 3.9164343 3.9101067 3.9021416 3.8925993 3.8815403 3.8690238 3.8551095 3.8398566 3.8233232 3.8055675 3.7866461 3.766615 3.7455294 3.7234435 3.7004101 3.6764812 3.6517074 3.626138 3.5998213 3.5728045 3.5451329 3.5168507 3.488001 3.458626 3.4287653 3.3984585 3.3677428 3.336655 3.3052297 3.2735014 3.241502 3.2092636 3.1768153 3.1441867 3.1114051 3.0784974 3.0454886 3.0124032 2.9792645 2.9460943 2.912914 2.879744 2.846603 2.8135092 2.7804804 2.7475326 2.7146816 2.681942 2.649328 2.6168523 2.5845277 2.552366 2.520378 2.488574 2.456964 2.4255567 2.3943608 2.3633842 2.3326342 2.3021178 2.2718413 2.2418106 2.212031 2.1825073 2.153244 2.1242456 2.0955157 2.0670576 2.0388741 2.0109684 1.9833424 1.9559982 1.9289378 1.9021623 1.8756733 1.8494717 1.823558 1.7979329 1.7725966 1.7475493 1.7227908 1.6983209 1.674139 1.6502447 1.6266371 1.6033154 1.5802784 1.557525 1.535054 1.5128639 1.4909532 1.4693204 1.4479637 1.4268814 1.4060715 1.3855324 1.3652617 1.3452576 1.3255179 1.3060405 1.286823 1.2678634 1.2491591 1.230708 1.2125077 1.1945556 1.1768495 1.1593869 1.1421652 1.1251819 1.1084347 1.0919209 1.075638 1.0595835 1.0437549 1.0281497 1.0127652 0.99759877 0.9826481 0.9679105 0.95338356 0.9390646 0.92495126 0.9110409 0.897331 0.88381916 0.8705028 0.8573796 0.84444696 0.83170253 0.81914383 0.8067685 0.7945741 0.78255826 0.77071863 0.759053 0.74755883 0.736234 0.7250762 0.71408314 0.7032526 0.69258237 0.68207026 0.67171407 0.66151166 0.65146095 0.6415598 0.6318061 0.6221978 0.6127329 0.6034094 0.5942252 0.5851785 0.57626724 0.56748945 0.5588434 0.550327 0.5419385 0.5336761 0.5255379 0.5175222 0.50962716 0.5018511 0.4941922 0.48664886 0.47921935 0.471902 0.46469522 0.45759735 0.4506068 0.44372204 0.43694144 0.43026355 0.4236868 0.4172097 0.41083083 0.4045487 0.3983619 0.39226896 0.38626856 0.38035926 0.37453976 0.36880872 0.3631648 0.3576067 0.35213315 0.3467429 0.3414347 0.33620727 0.33105946 0.32599008 0.32099792 0.31608182 0.31124067 0.30647334 0.3017787 0.29715565 0.29260314 0.2881201 0.28370544 0.2793582 0.2750773 0.2708618 0.26671067 0.26262292 0.25859764 0.25463384 0.25073063 0.24688707 0.24310225 0.23937531 0.23570533 0.23209149 0.2285329 0.22502874 0.22157818 0.21818042 0.21483465 0.21154006 0.20829588 0.20510137 0.20195574 0.19885828 0.19580822 0.19280486 0.1898475 0.18693541 0.18406792 0.18124434 0.17846401 0.17572626 0.17303047 0.17037596 0.16776212 0.16518833 0.16265397 0.16015846 0.15770116 0.15528154 0.15289901 0.15055299 0.14824292 0.14596826 0.14372846 0.14152302 0.13935137 0.137213 0.13510744 0.13303415 0.13099267 0.12898247 0.1270031 0.12505408 0.12313495 0.12124525 0.119384535 0.117552355 0.11574827 0.11397186 0.112222694 0.11050036 0.10880444 0.107134536 0.105490245 0.10387118 0.10227695 0.10070718 0.09916149 0.09763951 0.096140884 0.094665244 0.09321225 0.09178154 0.09037279 0.08898565 0.0876198 0.0862749 0.08495063 0.08364669 0.082362756 0.08109853 0.07985369 0.07862796 0.07742104 0.076232634 0.07506247 0.073910266 0.07277574 0.071658626 0.07055865 0.06947556 0.06840909 0.06735899 0.066325 0.06530689 0.0643044 0.06331729 0.062345333 0.061388295 0.060445946 0.059518058 0.05860441 0.057704788 0.056818973 0.055946756 0.055087924 0.054242272 0.053409602 0.052589715 0.051782407 0.050987493 0.05020478

</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="263.931" Num="5" zHalfNm="237.597" Error="2.488">
-66.709 6.728 -4.836 2.404 -0.518
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="15" 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="330.85168" C="-0.010796495" Error="0.00532"/>
<QuasiParabolic ID="3" StartDistance="6540.667" EndDistance="6542.0" A="-2.98160698E12" B="9.1152538E8" C="-69666.96" Error="0.00961"/>
<QuasiParabolic ID="4" StartDistance="6542.0" EndDistance="6543.0" A="3.79422455E12" B="-1.15996096E9" C="88655.13" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6543.0" EndDistance="6544.0" A="-3.69967078E12" B="1.13069939E9" C="-86391.51" Error="3.24E-10"/>
<QuasiParabolic ID="6" StartDistance="6544.0" EndDistance="6545.0" A="3.41278038E12" B="-1.04303264E9" C="79694.38" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6545.0" EndDistance="6547.0" A="-8.6792752E11" B="2.65052336E8" C="-20235.717" Error="0.0178"/>
<QuasiParabolic ID="8" StartDistance="6547.0" EndDistance="6570.0" A="7.4430112E10" B="-2.2822308E7" C="1749.5166" Error="0.0194"/>
<QuasiParabolic ID="9" StartDistance="6570.0" EndDistance="6572.0" A="8.4812838E12" B="-2.5819863E9" C="196510.86" Error="2.39E-10"/>
<QuasiParabolic ID="10" StartDistance="6572.0" EndDistance="6579.0" A="3.74096527E12" B="-1.13940608E9" C="86758.87" Error="0.00394"/>
<QuasiParabolic ID="11" StartDistance="6579.0" EndDistance="6589.0" A="6.9903398E12" B="-2.12720794E9" C="161831.2" Error="0.0158"/>
<QuasiParabolic ID="12" StartDistance="6589.0" EndDistance="6608.0" A="2.23594928E13" B="-6.7923021E9" C="515837.44" Error="0.0169"/>
<QuasiParabolic ID="13" StartDistance="6608.0" EndDistance="6619.0" A="-1.99599147E13" B="6.016235E9" C="-453331.53" Error="0.00462"/>
<QuasiParabolic ID="14" StartDistance="6619.0" EndDistance="6633.931" A="-2.18530495E13" B="6.588266E9" C="-496542.8" Error="1.91E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="91.0" Depth="0.154"/>
<TopsideChapman PeakHeight="263.931" PeakDensity="191136.78" PeakScaleHeight="20.199" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
