<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 05:10:00.000"
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 F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 05:10:00</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">
FF202611904290510001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.775" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.297" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.448" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="277.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="277.500" 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="3.525" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="317.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.025" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.025" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="291.230" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="262.745" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.382" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="40.791" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.628" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="21.758" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.930" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.510" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
277.500 277.500 280.000 282.500 282.500 285.000 285.000 287.500 290.000 290.000 290.000 295.000 295.000 297.500 300.000 305.000 305.000 307.500 310.000 315.000 317.500 325.000 327.500 330.000 336.177 343.691 353.026 364.938 380.664 402.385 434.335
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 81 93 90 81 78 105 105 81 84 84 81 78 78 81 69 84 81 72 72 75 78 69 63 75 69 0 0 57 0 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 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="539">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.04367 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.08733 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.131 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 291.23 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0
</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 0.33403847 0.33119148 0.3281487 0.32486364 0.32135794 0.3176544 0.31366172 0.30947158 0.30500823 0.30026543 0.2952228 0.2898758 0.28421468 0.2782522 0.2718713 0.26516846 0.25800884 0.25038952 0.24227011 0.23364271 0.22441068 0.21454152 0.2040046 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 0.2037942 0.20795144 0.2121087 0.21626596 0.2204232 0.22458047 0.22873773 0.23289499 0.23705223 0.24120949 0.24536675 0.249524 0.25368127 0.25783852 0.26199576 0.26615304 0.27031028 0.27446753 0.2786248 0.28278205 0.2869393 0.29109657 0.2952538 0.2994111 0.30356833 0.30772558 0.31188285 0.3160401 0.32019734 0.32435462 0.32851186 0.3326691 0.33682638 0.34098363 0.34514087 0.34929815 0.3534554 0.354 0.37560442 0.40205845 0.43008867 0.45958298 0.4904298 0.52255577 0.55589986 0.5904248 0.6261283 0.6630171 0.701118 0.7404585 0.78108394 0.8230614 0.86644346 0.9113016 0.95770735 1.005747 1.0554922 1.1070307 1.160432 1.2157866 1.2731712 1.3326381 1.3942599 1.4580868 1.5241268 1.5923715 1.6628183 1.7353827 1.8099512 1.8863962 1.9644923 2.0440004 2.1246393 2.2060292 2.2878342 2.36964 2.4510632 2.531668 2.6111217 2.6890142 2.7650743 2.8389819 2.910523 2.979498 3.0457613 3.1091871 3.1696868 3.2272294 3.281759 3.3332837 3.3817987 3.427325 3.4698825 3.5095074 3.5462265 3.5800874 3.6111135 3.6393564 3.6648436 3.687609 3.707686 3.7251039 3.7398863 3.7520595 3.7616367 3.7686348 3.7730646 3.7749324 3.775 3.7745416 3.7726018 3.7691848 3.764336 3.7581022 3.7505288 3.7416625 3.7315495 3.7202358 3.707767 3.6941886 3.6795456 3.6638823 3.647243 3.6296706 3.611208 3.591897 3.571779 3.550894 3.5292819 3.5069811 3.4840295 3.4604642 3.436321 3.4116352 3.3864405 3.3607705 3.3346574 3.3081322 3.2812257 3.253967 3.2263849 3.1985066 3.1703587 3.1419673 3.1133568 3.0845513 3.055574 3.0264468 2.9971912 2.9678278 2.938376 2.9088552 2.879283 2.849677 2.820054 2.7904296 2.7608192 2.7312372 2.7016976 2.6722136 2.6427977 2.6134617 2.5842173 2.5550752 2.5260456 2.497138 2.468362 2.439726 2.4112384 2.3829067 2.3547385 2.3267403 2.2989187 2.2712798 2.243829 2.2165718 2.189513 2.1626573 2.1360085 2.1095707 2.0833478 2.0573428 2.0315588 2.0059984 1.9806641 1.9555583 1.930683 1.9060398 1.8816304 1.8574561 1.833518 1.8098171 1.7863542 1.76313 1.7401447 1.7173988 1.6948924 1.6726254 1.6505978 1.6288093 1.6072596 1.5859481 1.5648742 1.5440372 1.5234364 1.5030708 1.4829396 1.4630415 1.4433756 1.4239405 1.4047351 1.3857579 1.3670077 1.348483 1.3301822 1.3121039 1.2942463 1.276608 1.2591872 1.2419822 1.2249914 1.208213 1.1916449 1.1752857 1.1591334 1.1431861 1.1274419 1.111899 1.0965555 1.0814093 1.0664587 1.0517017 1.0371362 1.0227604 1.0085723 0.99457 0.9807515 0.9671148 0.953658 0.9403791 0.92727613 0.9143472 0.9015903 0.8890035 0.8765849 0.8643326 0.8522446 0.84031904 0.82855403 0.81694764 0.80549794 0.7942032 0.7830615 0.77207094 0.76122975 0.7505361 0.7399881 0.7295841 0.7193222 0.7092007 0.6992178 0.68937176 0.6796609 0.6700835 0.6606379 0.65132236 0.64213526 0.63307494 0.6241397 0.6153281 0.6066383 0.59806895 0.5896184 0.581285 0.5730673 0.5649639 0.55697304 0.5490934 0.54132354 0.5336619 0.52610713 0.51865774 0.51131237 0.5040696 0.4969281 0.48988643 0.48294336 0.47609746 0.46934748 0.4626921 0.45613006 0.44966006 0.4432809 0.4369913 0.43079007 0.424676 0.4186479 0.4127046 0.4068449 0.4010677 0.39537188 0.38975626 0.3842198 0.37876138 0.37337995 0.36807442 0.36284375 0.3576869 0.35260287 0.34759066 0.34264922 0.3377776 0.33297488 0.32824004 0.32357216 0.3189703 0.31443352 0.30996096 0.3055517 0.3012049 0.2969196 0.29269502 0.2885303 0.28442454 0.280377 0.2763868 0.2724532 0.26857534 0.26475248 0.26098382 0.25726864 0.25360617 0.24999566 0.2464364 0.24292764 0.2394687 0.23605886 0.23269743 0.22938374 0.2261171 0.22289687 0.21972239 0.216593 0.21350807 0.21046698 0.2074691 0.20451385 0.20160058 0.19872874 0.19589771 0.19310695 0.19035587 0.1876439 0.1849705 0.18233512 0.17973724 0.1771763 0.17465179 0.1721632 0.16971001 0.16729173 0.16490786 0.1625579 0.1602414 0.15795785 0.15570681 0.15348782 0.1513004 0.14914413 0.14701854 0.14492323 0.14285773 0.14082165 0.13881455 0.13683604 0.1348857 0.13296312 0.13106793 0.12919973 0.12735814 0.12554276 0.12375326 0.12198923 0.12025033 0.118536204 0.11684649 0.11518085 0.113538936 0.11192041 0.11032494 0.108752206 0.107201874 0.10567363 0.10416716 0.10268216 0.10121831 0.09977533 0.0983529 0.09695074 0.09556856 0.09420608 0.092863016 0.091539085 0.09023403 0.088947564 0.08767944 0.08642938 0.08519714 0.08398246 0.08278509 0.08160479 0.08044132 0.07929442 0.07816387 0.077049434 0.07595088 0.074867986 0.073800534 0.07274829 0.07171105 0.07068859 0.069680706 0.068687186 0.06770783 0.066742435 0.06579081 0.06485274 0.063928045 0.063016534 0.062118016 0.061232306 0.06035922 0.059498586 0.058650218 0.057813946 0.056989595 0.056176998 0.055375986 0.054586392 0.053808052 0.053040814 0.05228451 0.051538993 0.0508041 0.05007969

</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="3.775" PeakHeight="291.23" Num="5" zHalfNm="262.745" Error="2.212">
-72.817 4.848 -3.55 1.89 -0.47
</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="6517.044" A="-1.1083368E11" B="3.4207928E7" C="-2639.3752" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.044" EndDistance="6554.087" A="0.0" B="1556.9268" C="-0.19886652" Error="0.0329"/>
<QuasiParabolic ID="3" StartDistance="6554.087" EndDistance="6591.0" A="1.90316728E10" B="-5892243.0" C="456.007" Error="0.0329"/>
<QuasiParabolic ID="4" StartDistance="6591.0" EndDistance="6592.0" A="1.9631918E13" B="-5.9573069E9" C="451936.4" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6592.0" EndDistance="6599.0" A="1.81392336E12" B="-5.5136173E8" C="41898.09" Error="0.0282"/>
<QuasiParabolic ID="6" StartDistance="6599.0" EndDistance="6613.0" A="6.1384787E12" B="-1.86203162E9" C="141206.31" Error="0.0281"/>
<QuasiParabolic ID="7" StartDistance="6613.0" EndDistance="6636.0" A="1.44074919E13" B="-4.3628672E9" C="330291.12" Error="0.0328"/>
<QuasiParabolic ID="8" StartDistance="6636.0" EndDistance="6661.23" A="-1.80858682E13" B="5.4301885E9" C="-407582.28" Error="0.0133"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.131" Depth="0.154"/>
<TopsideChapman PeakHeight="291.23" PeakDensity="176806.77" PeakScaleHeight="21.758" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
