<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 06:10:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 06:10:00</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">
FF202611904290610001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.480" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.180" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.850" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.275" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="291.224" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="276.169" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.022" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.285" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="37.377" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.299" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.314" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="33.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.260" 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" >
2.95 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 262.500 265.000 265.000 265.000 267.500 270.000 272.081 274.391 276.971 279.872 283.155 286.904 291.224 296.257 302.194 309.305 317.974 328.777 342.613 360.967 386.485 424.377
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 72 72 87 87 84 81 84 87 84 84 87 84 78 78 81 78 96 99 78 75 57 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="493">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 276.169 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0
</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 0.3761419 0.4017685 0.4311028 0.4640519 0.5002027 0.5389326 0.57960796 0.621741 0.66501194 0.7092654 0.7544462 0.80059224 0.84779567 0.8961768 0.9458905 0.99711025 1.0500048 1.104791 1.161678 1.2208978 1.2826954 1.347334 1.4150811 1.486184 1.5608847 1.6393831 1.7217731 1.8080579 1.8980302 1.99126 2.0870066 2.1843095 2.2819183 2.378512 2.4728193 2.56371 2.6503587 2.7322035 2.8089292 2.880466 2.946866 3.0082936 3.0649626 3.117125 3.1650312 3.2089264 3.2490325 3.2855732 3.3187437 3.348708 3.37563 3.399644 3.420874 3.4394143 3.4553668 3.4687972 3.4797745 3.4883454 3.4945512 3.498419 3.499967 3.5 3.4994328 3.4972756 3.4935563 3.488327 3.4816406 3.4735496 3.4641068 3.4533646 3.4413753 3.4281907 3.4138625 3.3984408 3.3819766 3.3645186 3.3461158 3.3268158 3.3066652 3.2857099 3.2639947 3.241563 3.2184582 3.194721 3.1703923 3.1455112 3.1201158 3.094243 3.0679288 3.0412078 3.0141137 2.9866784 2.9589334 2.930909 2.9026337 2.8741357 2.845442 2.8165781 2.787569 2.758438 2.729208 2.6999009 2.6705372 2.641137 2.611719 2.5823014 2.5529015 2.5235355 2.494219 2.464967 2.4357934 2.4067116 2.3777337 2.3488722 2.3201382 2.291542 2.263094 2.2348032 2.2066786 2.1787286 2.1509607 2.1233823 2.096 2.06882 2.0418484 2.0150902 1.9885509 1.9622346 1.9361455 1.9102879 1.8846647 1.8592794 1.8341347 1.8092332 1.7845771 1.7601684 1.7360088 1.7120997 1.6884425 1.6650379 1.6418868 1.61899 1.5963476 1.57396 1.551827 1.5299486 1.5083245 1.4869543 1.4658375 1.4449732 1.4243608 1.4039991 1.3838872 1.3640238 1.3444079 1.3250381 1.3059129 1.2870307 1.26839 1.2499894 1.2318269 1.2139008 1.1962093 1.1787506 1.1615229 1.1445239 1.1277518 1.1112046 1.0948803 1.0787767 1.0628917 1.0472232 1.031769 1.016527 1.001495 0.98667073 0.97205204 0.9576367 0.9434225 0.9294072 0.91558856 0.9019643 0.8885323 0.8752902 0.8622359 0.8493671 0.83668154 0.8241771 0.81185156 0.79970264 0.7877283 0.77592623 0.7642943 0.75283045 0.74153244 0.7303982 0.71942556 0.70861244 0.69795686 0.6874566 0.6771097 0.6669142 0.656868 0.646969 0.63721544 0.62760526 0.61813647 0.6088072 0.5996155 0.5905596 0.5816375 0.5728475 0.5641876 0.5556561 0.54725116 0.538971 0.530814 0.52277833 0.51486224 0.5070641 0.49938226 0.49181503 0.48436078 0.47701794 0.46978486 0.46266 0.4556418 0.44872874 0.44191927 0.43521193 0.42860523 0.42209774 0.41568795 0.4093745 0.403156 0.397031 0.3909982 0.38505623 0.37920374 0.37343946 0.36776206 0.36217025 0.3566628 0.3512385 0.34589607 0.34063432 0.33545202 0.33034807 0.32532126 0.32037047 0.31549454 0.3106924 0.30596292 0.30130503 0.29671767 0.29219976 0.28775033 0.2833683 0.27905267 0.2748025 0.27061674 0.26649448 0.26243472 0.2584366 0.2544991 0.25062138 0.24680252 0.24304163 0.23933786 0.23569034 0.23209822 0.22856069 0.22507688 0.22164604 0.21826732 0.21493998 0.2116632 0.20843627 0.20525838 0.20212884 0.1990469 0.19601183 0.19302294 0.19007953 0.18718089 0.18432638 0.1815153 0.17874701 0.17602088 0.17333622 0.17069244 0.16808893 0.16552505 0.16300023 0.16051385 0.15806533 0.15565412 0.15327963 0.15094131 0.14863862 0.146371 0.14413795 0.14193892 0.1397734 0.13764088 0.13554086 0.13347283 0.13143633 0.12943088 0.127456 0.1255112 0.123596065 0.12171013 0.11985294 0.118024066 0.116223074 0.114449546 0.112703055 0.1109832 0.10928957 0.10762177 0.1059794 0.10436208 0.10276942 0.10120105 0.099656604 0.09813572 0.096638024 0.095163174 0.093710825 0.09228063 0.09087224 0.08948535 0.0881196 0.0867747 0.085450314 0.08414613 0.08286184 0.08159714 0.08035175 0.079125345 0.077917665 0.0767284 0.075557284 0.07440404 0.07326839 0.07215007 0.07104881 0.06996436 0.06889646 0.067844845 0.06680928 0.06578952 0.064785324 0.063796446 0.06282266 0.061863735 0.060919445 0.059989564 0.059073877 0.058172163 0.057284206 0.056409806 0.055548746 0.05470083 0.053865854 0.05304362 0.052233934 0.05143661 0.05065145

</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="3.5" PeakHeight="276.169" Num="5" zHalfNm="250.022" Error="3.088">
-65.389 7.863 -5.693 3.194 -1.144
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="89.88985" C="0.026242252" Error="9.9E-4"/>
<QuasiParabolic ID="3" StartDistance="6550.0" EndDistance="6584.0" A="3.618698E10" B="-1.112526E7" C="855.0827" Error="8.53E-4"/>
<QuasiParabolic ID="4" StartDistance="6584.0" EndDistance="6586.0" A="6.3742951E12" B="-1.93643162E9" C="147066.08" Error="2.38E-10"/>
<QuasiParabolic ID="5" StartDistance="6586.0" EndDistance="6598.0" A="4.9128339E12" B="-1.4926231E9" C="113372.75" Error="0.00301"/>
<QuasiParabolic ID="6" StartDistance="6598.0" EndDistance="6608.0" A="9.6808605E12" B="-2.9379177E9" C="222897.95" Error="0.0177"/>
<QuasiParabolic ID="7" StartDistance="6608.0" EndDistance="6619.0" A="2.66502217E13" B="-8.0739226E9" C="611518.2" Error="0.00505"/>
<QuasiParabolic ID="8" StartDistance="6619.0" EndDistance="6646.169" A="-1.7227766E13" B="5.1842693E9" C="-390007.12" Error="0.00869"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.0" Depth="0.154"/>
<TopsideChapman PeakHeight="276.169" PeakDensity="151985.11" PeakScaleHeight="20.314" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
