<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-20 -140 22:45:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.20 (140) 22:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202614005202245001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.211" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.918" 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="3.725" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="292.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="292.500" 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="2.950" 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="2.950" 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="301.313" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="264.953" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.617" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="52.060" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.682" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.642" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="50.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
292.500 300.000 302.500 310.000 312.500 316.662 321.245 326.317 331.959 338.275 345.391 353.471 362.725 373.428 385.949 400.796 418.683 440.648 468.268
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 69 90 90 90 90 78 0 0 0 0 0 0 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 -10.9375 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="630">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.61867 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 177.23734 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 210.856 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 301.313 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0 671.0 672.0 673.0 674.0 675.0 676.0 677.0 678.0 679.0 680.0 681.0 682.0 683.0 684.0 685.0 686.0 687.0 688.0 689.0 690.0 691.0 692.0 693.0 694.0 695.0 696.0 697.0 698.0 699.0 700.0 701.0 702.0 703.0 704.0 705.0 706.0 707.0 708.0 709.0 710.0 711.0 712.0 713.0 714.0 715.0 716.0 717.0 718.0
</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 0.35354906 0.35306174 0.35235173 0.35134748 0.35020202 0.3488452 0.34720993 0.345377 0.34335393 0.34107903 0.3385647 0.33582452 0.33287326 0.32959685 0.32608482 0.3222986 0.31826773 0.31393665 0.30929127 0.30435503 0.29903027 0.29337278 0.28740022 0.28099883 0.27415663 0.26687858 0.25907388 0.2507378 0.24186859 0.23226006 0.22195826 0.21085048 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 0.20349361 0.2080744 0.21265519 0.21723598 0.22181676 0.22639756 0.23097834 0.23555914 0.24013992 0.24472071 0.2493015 0.2538823 0.25846308 0.26304385 0.26762465 0.27220544 0.27678624 0.281367 0.2859478 0.2905286 0.2951094 0.2996902 0.30427095 0.30885175 0.31343254 0.31801334 0.3225941 0.3271749 0.3317557 0.3363365 0.34091726 0.34549806 0.35007885 0.354 0.35668123 0.37563056 0.395157 0.4152509 0.43590495 0.4571171 0.47889876 0.5012519 0.5241803 0.5477063 0.5718341 0.59658855 0.6219765 0.6480247 0.6747472 0.7021719 0.7303137 0.7592008 0.7888481 0.8192882 0.85053504 0.88262415 0.91556734 0.949392 0.984121 1.0197772 1.0563688 1.0939357 1.1324751 1.1720053 1.2125376 1.2540766 1.2966276 1.3401885 1.3847487 1.4302899 1.4767855 1.5242232 1.5725516 1.6217332 1.6717144 1.7224202 1.7737951 1.8257431 1.8781935 1.9310443 1.984189 2.0375175 2.0909264 2.1442993 2.1975176 2.250471 2.3030398 2.355121 2.406587 2.457352 2.5073063 2.556364 2.6044376 2.6514533 2.6973293 2.7420075 2.7854314 2.8275554 2.8683207 2.9077 2.9456577 2.9821653 3.0171998 3.050739 3.0827734 3.1132832 3.1422627 3.1697056 3.1956038 3.2199557 3.2427635 3.264016 3.2837198 3.3018777 3.318485 3.3335502 3.3470721 3.3590508 3.369493 3.378397 3.3857663 3.3916028 3.3959079 3.3986812 3.399925 3.4 3.399796 3.3987792 3.3969266 3.3942583 3.3907948 3.386556 3.3815622 3.375834 3.3693914 3.3622549 3.3544445 3.3459804 3.3368828 3.3271713 3.316866 3.3059862 3.2945514 3.2825806 3.270093 3.257107 3.2436411 3.229714 3.2153432 3.2005463 3.1853411 3.1697443 3.1537728 3.137443 3.1207712 3.1037734 3.0864646 3.0688605 3.0509758 3.0328252 3.0144227 2.9957821 2.9769173 2.9578414 2.9385674 2.919108 2.8994749 2.8796806 2.8597367 2.8396544 2.8194447 2.7991183 2.7786856 2.7581565 2.7375412 2.716849 2.696089 2.6752703 2.6544015 2.6334908 2.6125467 2.5915766 2.5705884 2.549589 2.528586 2.5075858 2.4865952 2.4656205 2.4446678 2.423743 2.4028516 2.3819995 2.3611915 2.340433 2.3197284 2.2990828 2.2785003 2.2579854 2.2375422 2.2171743 2.1968858 2.17668 2.1565607 2.1365309 2.1165936 2.096752 2.0770087 2.0573664 2.0378277 2.0183952 1.9990708 1.9798568 1.9607555 1.9417684 1.9228975 1.9041444 1.8855108 1.8669981 1.8486078 1.830341 1.8121991 1.794183 1.776294 1.7585328 1.7409002 1.7233971 1.7060243 1.6887822 1.6716716 1.6546928 1.6378464 1.6211325 1.6045517 1.588104 1.5717897 1.555609 1.5395619 1.5236484 1.5078686 1.4922223 1.4767096 1.4613302 1.4460839 1.4309705 1.4159898 1.4011414 1.3864251 1.3718405 1.3573871 1.3430645 1.3288724 1.3148102 1.3008775 1.2870735 1.2733979 1.25985 1.2464294 1.2331353 1.2199671 1.2069242 1.1940058 1.1812114 1.1685401 1.1559913 1.1435643 1.1312584 1.1190727 1.1070065 1.095059 1.0832295 1.0715171 1.0599211 1.0484407 1.037075 1.0258232 1.0146844 1.0036579 0.99274296 0.9819384 0.9712437 0.96065784 0.95017993 0.93980926 0.9295449 0.91938597 0.9093317 0.8993811 0.8895334 0.87978774 0.8701432 0.860599 0.85115415 0.8418079 0.8325594 0.82340777 0.8143521 0.8053916 0.7965254 0.7877527 0.7790725 0.77048415 0.76198673 0.7535794 0.74526125 0.7370316 0.7288895 0.72083426 0.7128649 0.7049807 0.69718087 0.6894645 0.6818309 0.6742792 0.66680866 0.65941846 0.65210783 0.644876 0.6377222 0.63064563 0.62364554 0.61672115 0.60987175 0.60309654 0.5963949 0.5897659 0.583209 0.57672334 0.5703082 0.563963 0.5576869 0.5514792 0.5453393 0.5392664 0.53325987 0.527319 0.5214431 0.5156316 0.5098837 0.50419885 0.49857628 0.49301544 0.48751563 0.48207626 0.47669664 0.4713762 0.46611428 0.4609103 0.4557636 0.4506736 0.44563973 0.44066134 0.4357379 0.4308688 0.42605343 0.4212913 0.41658175 0.41192427 0.40731832 0.4027633 0.3982587 0.39380395 0.38939857 0.38504198 0.38073367 0.37647313 0.37225983 0.36809325 0.3639729 0.3598983 0.35586894 0.35188434 0.34794396 0.3440474 0.34019414 0.3363837 0.33261564 0.32888952 0.32520482 0.32156116 0.31795803 0.314395 0.31087166 0.3073876 0.3039423 0.3005354 0.2971665 0.2938351 0.29054087 0.2872834 0.28406224 0.280877 0.2777273 0.27461275 0.27153298 0.26848757 0.26547617 0.26249838 0.25955388 0.25664222 0.2537631 0.25091618 0.24810104 0.24531737 0.24256483 0.23984304 0.23715168 0.23449041 0.23185891 0.22925684 0.22668387 0.22413969 0.22162397 0.21913639 0.21667665 0.21424446 0.21183947 0.2094614 0.20710996 0.20478484 0.20248576 0.20021242 0.19796453 0.19574183 0.19354402 0.19137083 0.189222 0.18709722 0.18499625 0.18291883 0.18086468 0.17883356 0.1768252 0.17483935 0.17287575 0.17093417 0.16901436 0.16711606 0.16523907 0.1633831 0.16154794 0.15973337 0.15793915 0.15616505 0.15441084 0.15267631 0.15096125 0.14926541 0.1475886 0.1459306 0.1442912 0.1426702 0.14106737 0.13948254 0.13791549 0.13636602 0.13483395 0.13331906 0.13182117 0.1303401 0.12887564 0.12742764 0.12599587 0.12458018 0.12318038 0.121796295 0.12042774 0.11907456 0.11773656 0.11641359 0.11510547 0.113812044 0.11253313 0.11126858 0.11001823 0.10878192 0.10755949 0.10635079 0.105155654 0.10397395 0.10280551 0.10165019 0.100507855 0.09937834 0.09826151 0.09715723 0.09606536 0.09498574 0.09391825 0.09286275 0.09181911 0.09078719 0.08976685 0.088757984 0.08776045 0.08677412 0.085798874 0.084834576 0.08388112 0.082938366 0.08200621 0.08108452 0.08017319 0.0792721 0.07838113 0.077500165 0.0766291 0.07576783 0.07491623 0.0740742 0.07324163 0.072418414 0.07160445 0.070799634 0.07000386 0.069217026 0.06843903 0.06766978 0.06690917 0.06615711 0.065413505 0.064678244 0.063951254 0.06323244 0.06252169 0.06181893 0.06112407 0.06043702 0.059757687 0.05908599 0.058421843 0.05776516 0.057115853 0.056473847 0.055839054 0.055211395 0.05459079 0.053977158 0.053370427 0.05277051 0.052177336 0.05159083 0.051010914 0.050437517

</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="3.4" PeakHeight="301.313" Num="5" zHalfNm="264.953" Error="3.216">
-92.119 3.355 -2.974 1.557 -0.276
</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="6513.619" A="-1.34432154E11" B="4.1491404E7" C="-3201.372" Error="0.00164"/>
<QuasiParabolic ID="2" StartDistance="6513.619" EndDistance="6547.237" A="0.0" B="1694.3744" C="-0.220098" Error="0.0326"/>
<QuasiParabolic ID="3" StartDistance="6547.237" EndDistance="6578.0" A="1.53503068E10" B="-4784587.5" C="372.7211" Error="0.0326"/>
<QuasiParabolic ID="4" StartDistance="6578.0" EndDistance="6591.0" A="1.95393815E12" B="-5.9420019E8" C="45174.758" Error="0.0396"/>
<QuasiParabolic ID="5" StartDistance="6591.0" EndDistance="6599.0" A="1.52579421E12" B="-4.642824E8" C="35319.062" Error="0.00645"/>
<QuasiParabolic ID="6" StartDistance="6599.0" EndDistance="6643.0" A="5.1539251E12" B="-1.56388262E9" C="118634.734" Error="0.0352"/>
<QuasiParabolic ID="7" StartDistance="6643.0" EndDistance="6671.313" A="-9.545505E12" B="2.86165709E9" C="-214463.25" Error="0.0122"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="100.856" Depth="0.154"/>
<TopsideChapman PeakHeight="301.313" PeakDensity="143424.31" PeakScaleHeight="27.642" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
