<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 01:20:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 01:20:00</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">
FF202611904290120001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.574" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.620" 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="5.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.425" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="286.225" 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="253.809" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="225.502" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.129" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.275" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.434" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="21.940" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.360" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.780" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="69">
<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 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 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 227.500 227.500 227.500 227.500 230.000 230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 235.000 235.000 235.000 235.000 237.500 237.500 237.500 237.500 240.000 240.000 240.000 242.500 242.500 242.500 242.500 242.500 247.500 247.500 247.500 247.500 247.500 250.000 250.000 252.500 252.500 255.000 255.000 255.000 257.500 260.000 260.000 262.500 262.500 265.000 267.500 267.500 270.000 270.000 272.500 273.870 275.385 277.069 278.952 281.072 283.476 286.225 289.400 293.108 297.494 302.766 309.219 317.303 327.723 341.664 361.275
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 57 57 81 81 78 78 84 84 93 93 93 96 96 90 84 84 84 84 84 84 84 84 84 81 75 78 78 75 78 69 66 66 66 63 90 87 90 90 87 90 87 90 87 90 90 93 90 87 90 90 93 93 105 105 96 96 78 81 57 45 45 0 66 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 -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 4.6875 1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="519">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.83333 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 163.66667 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 190.5 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 253.809 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0
</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 0.353812 0.35332385 0.35253775 0.3513833 0.34986797 0.34800196 0.34587008 0.3433416 0.34043694 0.33717975 0.3335292 0.3294542 0.3250611 0.3201454 0.31483623 0.30908883 0.30277678 0.29597685 0.28861925 0.2806141 0.2719544 0.2625736 0.25233817 0.24117032 0.22898808 0.2156547 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 0.20191304 0.20765217 0.2133913 0.21913044 0.22486956 0.2306087 0.23634782 0.24208696 0.24782608 0.25356522 0.25930434 0.26504347 0.27078262 0.27652174 0.28226086 0.288 0.29373914 0.29947826 0.3052174 0.3109565 0.31669566 0.32243478 0.3281739 0.33391306 0.33965218 0.3453913 0.35113043 0.354 0.36532816 0.39109564 0.42159018 0.45726997 0.49809465 0.5434713 0.59244055 0.6440609 0.69765294 0.7528272 0.80945385 0.86754316 0.92722124 0.9887127 1.0522263 1.1180761 1.1865604 1.2580504 1.3329428 1.4116734 1.4947242 1.5826142 1.6758957 1.7751671 1.8809512 1.993786 2.1139593 2.2414656 2.37581 2.5158648 2.659799 2.8051405 2.9491577 3.0892768 3.223449 3.350288 3.4690819 3.5795767 3.6819706 3.776608 3.863926 3.9444692 4.0186977 4.0870914 4.1501026 4.2080894 4.261413 4.3103895 4.355287 4.3963532 4.4337873 4.467788 4.4985166 4.526115 4.5507083 4.572398 4.5912824 4.607438 4.620931 4.631814 4.64013 4.6459126 4.6491833 4.65 4.649966 4.648677 4.6455665 4.640688 4.6340976 4.6258507 4.616002 4.604608 4.591724 4.577405 4.5617056 4.54468 4.526383 4.506867 4.4861846 4.4643884 4.4415283 4.417655 4.3928175 4.367064 4.3404417 4.3129973 4.2847757 4.2558208 4.226176 4.1958823 4.164981 4.133512 4.101514 4.0690236 4.0360775 4.0027113 3.9689581 3.9348514 3.9004228 3.8657033 3.8307223 3.7955084 3.7600894 3.7244918 3.688741 3.6528614 3.6168768 3.58081 3.5446827 3.5085154 3.4723282 3.4361403 3.3999698 3.3638341 3.32775 3.2917333 3.2557988 3.2199612 3.1842344 3.1486309 3.1131632 3.077843 3.0426815 3.007689 2.9728756 2.9382505 2.9038224 2.8695998 2.8355904 2.8018012 2.7682395 2.7349112 2.7018225 2.6689792 2.6363857 2.6040473 2.5719683 2.5401525 2.5086038 2.4773254 2.4463205 2.415592 2.3851418 2.3549726 2.325086 2.2954838 2.2661676 2.2371385 2.2083974 2.1799452 2.1517825 2.1239095 2.0963268 2.069034 2.0420315 2.0153186 1.988895 1.9627603 1.9369137 1.9113545 1.8860818 1.8610945 1.8363914 1.8119714 1.7878331 1.7639753 1.7403961 1.7170943 1.6940681 1.6713158 1.6488355 1.6266258 1.6046844 1.5830095 1.5615991 1.5404513 1.5195638 1.4989347 1.4785618 1.4584429 1.4385757 1.4189583 1.3995882 1.3804632 1.361581 1.3429393 1.3245358 1.3063682 1.2884341 1.2707313 1.2532574 1.2360098 1.2189865 1.202185 1.185603 1.169238 1.1530877 1.1371499 1.1214222 1.1059021 1.0905874 1.0754758 1.0605649 1.0458525 1.0313362 1.0170139 1.0028831 0.98894167 0.9751873 0.9616179 0.9482311 0.9350248 0.9219968 0.9091448 0.89646685 0.8839607 0.8716243 0.8594554 0.8474521 0.83561224 0.8239337 0.8124146 0.8010528 0.7898464 0.7787934 0.76789176 0.7571397 0.7465351 0.73607624 0.7257612 0.715588 0.7055549 0.69566005 0.6859017 0.676278 0.6667872 0.6574276 0.6481974 0.63909495 0.6301185 0.6212664 0.612537 0.60392874 0.59544 0.58706903 0.5788144 0.5706745 0.56264776 0.55473274 0.54692787 0.5392317 0.5316428 0.5241596 0.5167808 0.5095049 0.5023306 0.4952564 0.488281 0.48140305 0.47462124 0.4679342 0.4613407 0.45483944 0.44842914 0.44210857 0.4358765 0.42973173 0.423673 0.41769922 0.41180915 0.40600166 0.40027562 0.3946299 0.3890634 0.383575 0.37816364 0.37282825 0.36756778 0.3623812 0.35726747 0.3522256 0.3472546 0.34235346 0.33752123 0.3327569 0.3280596 0.3234284 0.31886232 0.31436047 0.30992198 0.30554596 0.3012315 0.29697782 0.292784 0.28864926 0.28457272 0.2805536 0.2765911 0.27268443 0.26883277 0.26503542 0.26129156 0.25760046 0.25396138 0.25037363 0.24683644 0.24334912 0.23991096 0.23652129 0.23317942 0.22988468 0.22663642 0.22343399 0.22027671 0.21716398 0.21409516 0.21106966 0.20808683 0.2051461 0.20224687 0.19938856 0.19657059 0.19379239 0.1910534 0.18835309 0.1856909 0.18306628 0.18047872 0.1779277 0.1754127 0.1729332 0.17048873 0.16807878 0.16570285 0.16336048 0.1610512 0.15877452 0.15653001 0.1543172 0.15213564 0.1499849 0.14786455 0.14577414 0.14371327 0.14168152 0.13967846 0.13770372 0.13575687 0.13383752 0.1319453 0.1300798 0.12824069 0.12642755 0.124640025 0.12287777 0.12114041 0.119427614 0.11773902 0.11607429 0.11443308 0.112815075 0.111219935 0.10964733 0.108096965 0.10656851 0.10506166 0.1035761 0.10211155 0.10066769 0.099244244 0.09784092 0.09645743 0.0950935 0.09374885 0.09242321 0.0911163 0.08982787 0.08855766 0.087305404 0.08607085 0.084853746 0.08365385 0.08247092 0.081304714 0.08015499 0.07902153 0.07790409 0.07680245 0.075716384 0.07464567 0.07359009 0.07254945 0.07152351 0.07051208 0.06951495 0.068531916 0.06756279 0.066607356 0.06566544 0.064736836 0.06382136 0.062918834 0.062029067 0.06115188 0.0602871 0.059434544 0.058594044 0.057765428 0.05694853 0.056143183 0.055349223 0.05456649 0.053794827 0.053034075 0.052284077 0.05154469 0.050815754 0.050097123

</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="4.65" PeakHeight="253.809" Num="5" zHalfNm="225.502" Error="1.537">
-71.03 13.174 -8.167 4.156 -1.442
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" 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="6506.833" A="-2.10612257E11" B="6.5003784E7" C="-5015.5986" Error="0.00148"/>
<QuasiParabolic ID="2" StartDistance="6506.833" EndDistance="6533.667" A="0.0" B="497.93774" C="-0.03650616" Error="0.00738"/>
<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6558.0" A="5.3145776E10" B="-1.6371302E7" C="1260.7651" Error="0.00738"/>
<QuasiParabolic ID="4" StartDistance="6558.0" EndDistance="6560.0" A="4.00857629E11" B="-1.22413344E8" C="9345.703" Error="5.67E-4"/>
<QuasiParabolic ID="5" StartDistance="6560.0" EndDistance="6563.0" A="7.7901249E12" B="-2.37523866E9" C="181054.95" Error="0.0197"/>
<QuasiParabolic ID="6" StartDistance="6563.0" EndDistance="6572.0" A="7.0493531E12" B="-2.14949683E9" C="163856.89" Error="0.0135"/>
<QuasiParabolic ID="7" StartDistance="6572.0" EndDistance="6581.0" A="1.39464121E13" B="-4.24841933E9" C="323543.62" Error="0.015"/>
<QuasiParabolic ID="8" StartDistance="6581.0" EndDistance="6595.0" A="4.6512483E13" B="-1.41454162E10" C="1075480.8" Error="0.015"/>
<QuasiParabolic ID="9" StartDistance="6595.0" EndDistance="6606.0" A="-4.171073E13" B="1.26091581E10" C="-952917.6" Error="0.00772"/>
<QuasiParabolic ID="10" StartDistance="6606.0" EndDistance="6623.809" A="-2.33126379E13" B="7.0390431E9" C="-531322.44" Error="0.00298"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="253.809" PeakDensity="268269.22" PeakScaleHeight="21.94" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
