<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 06:30:00.000"
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) 06:30:00</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">
FF202611904290630001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.325" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.367" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.195" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="287.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="287.500" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.025" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="292.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="287.076" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="257.978" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.190" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="41.646" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.302" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.426" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.880" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.860" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
287.500 290.000 292.500 298.333 304.167 307.359 311.163 315.772 321.473 328.706 338.183 351.142 369.933 399.635 453.642
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 78 78 0 0 78 93 0 75 72 99 96 0 72 72
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="536">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 145.953 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 181.906 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 217.859 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 287.076 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0
</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 0.35250095 0.35171908 0.35071898 0.3495047 0.3480812 0.34652662 0.3447022 0.34275916 0.34056342 0.33819553 0.3355976 0.3327837 0.329704 0.3264424 0.32295412 0.3192619 0.3152729 0.31102335 0.30649677 0.30168673 0.2965726 0.29119697 0.28545263 0.27931908 0.27285117 0.2659858 0.25867194 0.25085092 0.24255785 0.23362237 0.22413324 0.21390489 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 0.20040263 0.204686 0.20896937 0.21325275 0.21753612 0.22181949 0.22610286 0.23038623 0.2346696 0.23895296 0.24323633 0.2475197 0.25180307 0.25608644 0.2603698 0.26465318 0.26893654 0.2732199 0.27750328 0.28178668 0.28607005 0.29035342 0.2946368 0.29892015 0.30320352 0.3074869 0.31177026 0.31605363 0.320337 0.32462037 0.32890373 0.3331871 0.33747047 0.34175384 0.3460372 0.35032058 0.354 0.35660386 0.37638608 0.39860663 0.42337242 0.450646 0.4802729 0.51197636 0.5454458 0.58038324 0.6165357 0.6537308 0.69184685 0.73083025 0.7706714 0.8113818 0.85299677 0.8955824 0.9391952 0.9839272 1.0298567 1.0770826 1.1256864 1.1757647 1.2274164 1.2807473 1.3358339 1.3927596 1.4515941 1.512382 1.5751528 1.6398882 1.7065228 1.7749555 1.8450003 1.9164304 1.9889264 2.0621152 2.1355536 2.208778 2.281318 2.3526793 2.4224477 2.4902189 2.5556781 2.6185637 2.678691 2.7359393 2.7902288 2.8415306 2.8898656 2.9352474 2.9777458 3.0174224 3.054349 3.0885932 3.1202435 3.149375 3.1760552 3.200355 3.2223415 3.2420661 3.2595928 3.2749605 3.2882156 3.299392 3.308523 3.3156312 3.3207376 3.3238559 3.324991 3.325 3.3244536 3.322653 3.3196313 3.3154252 3.3100717 3.3036084 3.2960722 3.2875001 3.2779295 3.267397 3.2559392 3.2435923 3.2303925 3.2163746 3.201574 3.1860251 3.1697617 3.1528172 3.1352243 3.1170151 3.098221 3.078873 3.0590005 3.0386333 3.0178 2.9965286 2.974846 2.9527786 2.9303524 2.907592 2.884522 2.8611655 2.8375454 2.8136837 2.7896016 2.76532 2.7408586 2.7162364 2.691472 2.6665835 2.641588 2.616502 2.5913413 2.566121 2.5408564 2.5155609 2.4902482 2.4649315 2.4396229 2.4143343 2.3890772 2.363862 2.3386993 2.3135989 2.2885702 2.2636218 2.2387626 2.2140002 2.1893427 2.164797 2.14037 2.1160681 2.0918975 2.067864 2.043973 2.0202293 1.9966382 1.9732038 1.9499303 1.9268217 1.9038817 1.8811135 1.8585204 1.8361052 1.8138705 1.791819 1.7699525 1.7482735 1.7267834 1.7054842 1.6843771 1.6634635 1.6427444 1.622221 1.601894 1.5817641 1.5618318 1.5420977 1.5225618 1.5032244 1.4840856 1.4651453 1.4464034 1.4278597 1.4095137 1.391365 1.3734133 1.3556578 1.338098 1.3207331 1.3035622 1.2865845 1.2697992 1.2532053 1.2368016 1.2205873 1.204561 1.1887217 1.1730682 1.1575992 1.1423135 1.1272097 1.1122866 1.0975426 1.0829766 1.068587 1.0543723 1.0403312 1.0264623 1.012764 0.9992347 0.9858729 0.9726773 0.9596461 0.9467779 0.934071 0.92152405 0.9091353 0.8969033 0.88482636 0.872903 0.86113155 0.84951055 0.8380384 0.8267134 0.8155341 0.8044989 0.7936063 0.7828546 0.77224237 0.7617679 0.75142986 0.7412266 0.7311565 0.7212183 0.71141016 0.70173085 0.69217867 0.68275225 0.6734501 0.6642707 0.6552127 0.6462745 0.63745475 0.62875205 0.62016493 0.611692 0.6033319 0.59508324 0.5869446 0.57891464 0.57099205 0.5631755 0.5554637 0.5478552 0.5403489 0.5329433 0.5256373 0.51842964 0.511319 0.5043041 0.49738386 0.490557 0.4838223 0.47717857 0.47062472 0.46415955 0.45778188 0.45149064 0.44528466 0.43916285 0.43312413 0.4271674 0.4212916 0.41549563 0.4097785 0.4041392 0.3985766 0.39308977 0.3876777 0.3823394 0.37707388 0.3718802 0.3667574 0.3617045 0.35672066 0.35180488 0.34695628 0.342174 0.3374571 0.33280474 0.32821605 0.32369018 0.31922626 0.3148235 0.31048107 0.30619815 0.30197394 0.29780766 0.29369852 0.28964576 0.2856486 0.2817063 0.27781814 0.27398336 0.27020127 0.26647112 0.26279223 0.2591639 0.25558543 0.25205615 0.24857542 0.24514255 0.2417569 0.23841783 0.23512472 0.23187692 0.22867382 0.22551481 0.22239931 0.21932669 0.2162964 0.21330784 0.21036045 0.20745367 0.20458694 0.20175973 0.19897147 0.19622163 0.19350971 0.1908352 0.18819754 0.18559624 0.18303084 0.1805008 0.17800568 0.17554498 0.1731182 0.17072493 0.16836467 0.16603698 0.16374141 0.16147752 0.15924488 0.15704307 0.15487164 0.1527302 0.1506183 0.14853558 0.14648162 0.144456 0.14245838 0.14048833 0.13854548 0.13662949 0.13473995 0.13287652 0.13103881 0.1292265 0.12743923 0.12567665 0.12393842 0.12222421 0.12053368 0.11886652 0.11722239 0.11560099 0.11400199 0.11242509 0.11086998 0.10933637 0.10782395 0.10633244 0.10486155 0.10341099 0.10198048 0.10056974 0.09917851 0.097806506 0.09645347 0.09511915 0.09380327 0.09250558 0.09122584 0.089963794 0.0887192 0.08749181 0.08628139 0.08508771 0.08391054 0.08274964 0.08160481 0.0804758 0.0793624 0.0782644 0.07718159 0.07611375 0.07506068 0.07402218 0.07299804 0.07198806 0.07099205 0.07000982 0.06904117 0.068085924 0.06714389 0.06621488 0.06529873 0.06439524 0.06350426 0.062625594 0.06175909 0.060904566 0.060061865 0.059230823 0.058411274 0.057603065 0.056806035 0.056020033 0.0552449 0.054480493 0.053726662 0.052983258 0.05225014 0.05152716 0.050814185 0.050111074

</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="3.325" PeakHeight="287.076" Num="5" zHalfNm="257.978" Error="2.532">
-72.639 6.321 -4.423 2.481 -0.957
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6515.953" A="-1.17613576E11" B="3.6300488E7" C="-2800.8381" Error="0.00182"/>
<QuasiParabolic ID="2" StartDistance="6515.953" EndDistance="6551.906" A="0.0" B="-648.4647" C="0.13956054" Error="0.0147"/>
<QuasiParabolic ID="3" StartDistance="6551.906" EndDistance="6586.0" A="4.2863034E10" B="-1.3150457E7" C="1008.661" Error="0.0147"/>
<QuasiParabolic ID="4" StartDistance="6586.0" EndDistance="6587.0" A="1.83420335E12" B="-5.5713478E8" C="42307.195" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6587.0" EndDistance="6604.0" A="3.76159076E12" B="-1.14234419E9" C="86728.74" Error="0.0289"/>
<QuasiParabolic ID="6" StartDistance="6604.0" EndDistance="6631.0" A="9.9298826E12" B="-3.01039155E9" C="228161.77" Error="0.0494"/>
<QuasiParabolic ID="7" StartDistance="6631.0" EndDistance="6657.076" A="-1.30379741E13" B="3.91702707E9" C="-294189.22" Error="0.00389"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="107.859" Depth="0.154"/>
<TopsideChapman PeakHeight="287.076" PeakDensity="137166.56" PeakScaleHeight="22.426" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
