<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 22:15:00.000"
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="20.0">
<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: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.17 (107) 22:15:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" 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">
FF202610704172215001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.537" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.089" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.225" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.225" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.125" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="212.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="212.500" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="280.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.375" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.225" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.225" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="247.931" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="216.043" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.312" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="45.232" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.731" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="24.657" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="36.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.300" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="60">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
212.500 212.500 213.500 214.500 215.500 216.500 217.500 220.000 220.000 220.000 220.000 222.500 222.500 222.500 225.000 225.000 225.000 227.500 227.500 230.000 235.000 235.000 235.000 232.500 240.000 237.500 237.500 237.500 238.750 240.000 240.000 240.000 242.500 245.000 245.000 247.500 247.500 250.000 252.500 257.500 258.750 260.000 260.000 262.500 265.000 267.500 270.000 275.000 277.500 280.000 285.000 287.500 292.500 297.500 305.000 310.000 317.500 328.709 342.484 359.821
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 66 0 69 0 57 60 57 57 54 57 60 60 0 0 0 54 39 42 33 0 0 54 60 60 72 72 72 69 72 66 81 78 60 60 78 75 72 69 0 72 63 63 66 63 69 66 63 63 66 63 60 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="538">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.082 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 133.91667 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 157.83333 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 181.75 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 247.931 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22464676 0.24778156 0.26768273 0.28494558 0.3000142 0.31321818 0.32479095 0.33491153 0.34371024 0.35129014 0.35773134 0.36309302 0.36742222 0.370756 0.3731194 0.37453076 0.375 0.37479615 0.37410387 0.37300894 0.37143782 0.36940283 0.36692032 0.3639328 0.36046848 0.35648552 0.3520266 0.34699833 0.3414669 0.3353084 0.32850164 0.32105854 0.3128607 0.30392602 0.2941367 0.28341168 0.27159178 0.25864366 0.24425176 0.2282854 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.208 0.20916377 0.21614634 0.22312891 0.2301115 0.23709407 0.24407665 0.25105923 0.2580418 0.2650244 0.27200696 0.27898955 0.28597212 0.2929547 0.29993728 0.30691987 0.31390244 0.320885 0.3278676 0.33485016 0.34183276 0.34881532 0.35579792 0.36278048 0.36976308 0.375 0.3841831 0.41928366 0.4528362 0.48569256 0.5183698 0.5512063 0.5844847 0.6184216 0.65322316 0.6890845 0.7261891 0.76473665 0.8049344 0.84701127 0.8912083 0.9378065 0.98710877 1.039474 1.0952941 1.1550303 1.2191924 1.2883424 1.3630811 1.444017 1.5316939 1.6265011 1.7283947 1.8368186 1.9503961 2.0670078 2.1840453 2.2988937 2.4093814 2.5140707 2.6122046 2.703579 2.7883272 2.866799 2.9394195 3.0066504 3.0689118 3.1266127 3.1801403 3.229821 3.2759378 3.3187606 3.3585157 3.395402 3.4296005 3.4612713 3.490544 3.5175507 3.5423892 3.5651593 3.5859482 3.604827 3.6218557 3.6370993 3.6506054 3.6624143 3.6725643 3.681086 3.6880057 3.6933424 3.6971142 3.6993296 3.7 3.6999972 3.699327 3.6975007 3.6945486 3.690502 3.6853914 3.6792486 3.6721041 3.6639895 3.6549356 3.6449733 3.6341336 3.622447 3.6099436 3.596654 3.582607 3.5678327 3.5523598 3.5362167 3.5194318 3.5020328 3.4840465 3.4654999 3.446419 3.4268298 3.406757 3.3862257 3.36526 3.3438826 3.3221173 3.2999861 3.277511 3.254713 3.2316132 3.2082314 3.1845875 3.1607003 3.1365883 3.1122696 3.0877616 3.0630808 3.0382438 3.0132663 2.9881637 2.9629507 2.9376416 2.91225 2.8867896 2.8612728 2.8357122 2.8101196 2.7845066 2.7588842 2.7332628 2.7076528 2.682064 2.6565056 2.6309867 2.605516 2.5801015 2.5547512 2.5294728 2.5042734 2.4791598 2.4541388 2.4292164 2.4043987 2.3796914 2.3550994 2.3306284 2.306283 2.2820678 2.2579873 2.234045 2.2102454 2.1865919 2.1630876 2.1397362 2.1165404 2.0935032 2.0706272 2.0479145 2.0253675 2.0029886 1.9807794 1.9587417 1.9368773 1.9151872 1.8936733 1.8723365 1.8511779 1.8301985 1.809399 1.7887802 1.7683426 1.7480869 1.7280133 1.708122 1.6884135 1.6688877 1.6495447 1.6303844 1.6114068 1.5926116 1.5739985 1.5555671 1.5373173 1.5192482 1.5013597 1.4836509 1.4661214 1.4487704 1.4315971 1.414601 1.397781 1.3811364 1.3646662 1.3483697 1.3322457 1.3162934 1.3005116 1.2848994 1.2694556 1.2541791 1.239069 1.224124 1.2093428 1.1947244 1.1802677 1.1659713 1.151834 1.1378546 1.1240318 1.1103644 1.0968511 1.0834906 1.0702817 1.057223 1.0443133 1.0315511 1.0189353 1.0064645 0.9941374 0.98195267 0.96990895 0.958005 0.9462395 0.934611 0.92311835 0.9117601 0.90053505 0.8894418 0.87847906 0.8676455 0.8569399 0.8463609 0.8359073 0.8255777 0.8153708 0.8052854 0.7953203 0.78547406 0.7757455 0.7661334 0.75663656 0.7472537 0.7379835 0.7288249 0.7197766 0.71083736 0.7020061 0.69328153 0.6846625 0.6761479 0.6677365 0.65942717 0.6512188 0.64311016 0.6351002 0.6271878 0.61937183 0.6116513 0.60402495 0.5964918 0.5890508 0.5817009 0.57444096 0.56727004 0.56018704 0.55319095 0.5462808 0.5394556 0.53271425 0.5260559 0.5194795 0.5129841 0.5065688 0.5002326 0.49397454 0.48779374 0.4816893 0.47566032 0.46970585 0.46382502 0.458017 0.45228085 0.44661576 0.44102088 0.43549532 0.4300383 0.42464897 0.41932654 0.4140702 0.4088791 0.4037525 0.39868966 0.39368972 0.38875198 0.38387567 0.37906003 0.37430432 0.36960787 0.36496988 0.36038968 0.35586655 0.3513998 0.34698877 0.34263274 0.33833107 0.33408305 0.32988808 0.32574543 0.32165453 0.31761473 0.3136254 0.3096859 0.3057956 0.30195397 0.29816037 0.2944142 0.29071486 0.28706178 0.28345442 0.2798922 0.27637458 0.27290097 0.26947084 0.26608366 0.26273888 0.259436 0.2561745 0.25295386 0.24977356 0.24663313 0.24353203 0.24046981 0.23744598 0.23446007 0.23151158 0.22860007 0.22572507 0.22288615 0.22008282 0.21731466 0.21458122 0.2118821 0.20921683 0.20658502 0.20398624 0.20142007 0.19888613 0.19638398 0.19391327 0.19147356 0.18906449 0.18668568 0.18433674 0.1820173 0.17972699 0.17746545 0.17523234 0.17302726 0.17084989 0.16869988 0.16657688 0.16448057 0.16241059 0.16036662 0.15834835 0.15635546 0.1543876 0.15244447 0.15052578 0.1486312 0.14676045 0.14491321 0.14308919 0.14128812 0.13950968 0.13775362 0.13601963 0.13430744 0.13261679 0.1309474 0.12929901 0.12767135 0.12606415 0.12447718 0.122910164 0.121362865 0.11983503 0.1183264 0.116836764 0.11536586 0.11391346 0.11247934 0.11106326 0.10966499 0.10828432 0.10692102 0.10557487 0.10424566 0.102933176 0.10163721 0.10035755 0.09909399 0.09784633 0.096614376 0.09539792 0.094196774 0.093010746 0.09183965 0.09068328 0.08954147 0.088414036 0.087300785 0.08620155 0.08511615 0.084044404 0.08298615 0.081941225 0.080909446 0.07989066 0.07888469 0.07789139 0.076910585 0.07594214 0.07498587 0.07404164 0.07310931 0.072188705 0.07127969 0.07038212 0.06949585 0.068620734 0.06775664 0.06690342 0.066060945 0.06522908 0.064407684 0.06359662 0.06279578 0.062005017 0.06122421 0.060453236 0.059691966 0.05894028 0.05819806 0.057465184 0.056741536 0.056027 0.05532146 0.054624803 0.053936917 0.053257693 0.052587017 0.05192479 0.051270902 0.050625246

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.375" PeakHeight="110.0" Num="3" Error="0.0">
-19.492 2.751 -0.177
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.375" EndFrequency="3.7" PeakHeight="247.931" Num="5" zHalfNm="216.043" Error="1.645">
-75.15 15.154 -9.782 4.083 -0.486
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="13" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.02" EndDistance="6480.001" A="-6.1728234E11" B="1.90519248E8" C="-14700.418" Error="0.00259"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6503.917" A="-3.02216118E11" B="9.3276576E7" C="-7197.126" Error="0.00171"/>
<QuasiParabolic ID="2" StartDistance="6503.917" EndDistance="6527.833" A="0.0" B="302.28452" C="-0.0031787832" Error="0.00314"/>
<QuasiParabolic ID="3" StartDistance="6527.833" EndDistance="6529.0" A="-2.90892415E12" B="8.9101914E8" C="-68230.945" Error="0.00432"/>
<QuasiParabolic ID="4" StartDistance="6529.0" EndDistance="6531.0" A="1.03183516E12" B="-3.16136416E8" C="24214.727" Error="0.0184"/>
<QuasiParabolic ID="5" StartDistance="6531.0" EndDistance="6551.0" A="5.3852168E10" B="-1.6646908E7" C="1286.4222" Error="0.0189"/>
<QuasiParabolic ID="6" StartDistance="6551.0" EndDistance="6553.0" A="1.36908573E13" B="-4.17998234E9" C="319049.78" Error="0.00758"/>
<QuasiParabolic ID="7" StartDistance="6553.0" EndDistance="6554.0" A="-7.0319719E12" B="2.14470234E9" C="-163529.56" Error="1.66E-10"/>
<QuasiParabolic ID="8" StartDistance="6554.0" EndDistance="6563.0" A="3.11907844E12" B="-9.5296333E8" C="72789.16" Error="0.00695"/>
<QuasiParabolic ID="9" StartDistance="6563.0" EndDistance="6571.0" A="8.3765415E12" B="-2.55511578E9" C="194848.61" Error="0.00836"/>
<QuasiParabolic ID="10" StartDistance="6571.0" EndDistance="6584.0" A="3.06369412E13" B="-9.3304617E9" C="710397.75" Error="0.0178"/>
<QuasiParabolic ID="11" StartDistance="6584.0" EndDistance="6598.0" A="-2.10335496E13" B="6.365313E9" C="-481565.75" Error="0.00637"/>
<QuasiParabolic ID="12" StartDistance="6598.0" EndDistance="6617.931" A="-1.14162789E13" B="3.45010509E9" C="-260649.73" Error="0.00282"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="71.75" Depth="0.167"/>
<TopsideChapman PeakHeight="247.931" PeakDensity="169851.11" PeakScaleHeight="24.657" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
