<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-08 -098 06:10:00.000"
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: 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" >
2026.04.08 (098) 06:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609804080610001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.123" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.511" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.200" 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="0.175" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="351.164" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="305.836" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="268.557" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.285" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="53.106" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.110" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="28.131" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="52.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.210" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="30">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 2.05 2.075 2.1 2.125 2.15 2.175 2.2 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
292.500 295.000 296.875 298.750 300.625 302.500 305.000 305.000 307.500 310.000 312.500 315.000 317.500 321.250 325.000 327.500 330.000 332.500 335.492 338.796 342.465 346.561 351.164 356.375 362.322 369.174 377.152 386.561 397.823 411.546
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 75 0 0 0 75 78 78 78 54 54 54 51 0 48 0 75 66 66 69 69 69 66 66 63 63 66 66 63 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="622">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.065 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.13 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.195 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 305.836 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0 671.0 672.0 673.0 674.0 675.0 676.0 677.0 678.0 679.0 680.0 681.0 682.0 683.0 684.0 685.0 686.0 687.0 688.0 689.0 690.0 691.0 692.0 693.0 694.0 695.0 696.0 697.0 698.0 699.0 700.0 701.0 702.0 703.0 704.0 705.0 706.0 707.0 708.0 709.0 710.0
</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 0.35257575 0.35171902 0.35071892 0.34950462 0.34815413 0.34652644 0.34477356 0.34282959 0.34063274 0.3382637 0.33566448 0.33291543 0.32989758 0.3266311 0.32319945 0.31949985 0.3155029 0.31130126 0.3068177 0.30204535 0.29701284 0.29166007 0.28588656 0.27988958 0.27345318 0.2666028 0.25935066 0.25161305 0.24337208 0.2346045 0.22517611 0.21509583 0.20427519 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 0.20371495 0.20798503 0.21225509 0.21652517 0.22079523 0.2250653 0.22933537 0.23360543 0.2378755 0.24214557 0.24641564 0.2506857 0.25495577 0.25922585 0.26349592 0.26776597 0.27203605 0.27630612 0.28057617 0.28484625 0.28911632 0.2933864 0.29765645 0.30192652 0.3061966 0.31046665 0.31473672 0.3190068 0.32327685 0.32754692 0.331817 0.33608708 0.34035712 0.3446272 0.34889728 0.35316733 0.354 0.37059242 0.39076003 0.4107104 0.43062705 0.45064366 0.47086304 0.4913627 0.51220846 0.5334548 0.55515337 0.57734483 0.60007536 0.62337184 0.64727074 0.67180145 0.6969902 0.72286797 0.7494503 0.7767537 0.804802 0.8336038 0.86316407 0.893491 0.9245886 0.95645285 0.989072 1.0224339 1.056525 1.0913146 1.1267872 1.162904 1.1996288 1.2369275 1.2747447 1.3130392 1.3517553 1.390845 1.4302421 1.4698932 1.5097473 1.5497266 1.5897804 1.6298465 1.6698602 1.7097645 1.7494996 1.7890043 1.8282303 1.8671123 1.9055978 1.9436446 1.9812007 2.0182114 2.0546367 2.0904279 2.1255522 2.1599581 2.1936178 2.2264805 2.258528 2.2897182 2.320025 2.3494081 2.3778515 2.4053168 2.4317896 2.4572334 2.481634 2.5049694 2.5272155 2.5483532 2.5683694 2.5872407 2.6049526 2.6214936 2.6368468 2.651 2.6639445 2.6756663 2.6861584 2.6954112 2.703416 2.710169 2.7156627 2.7198942 2.7228594 2.724556 2.725 2.724991 2.7245483 2.7234507 2.721713 2.7193508 2.7163796 2.7128143 2.7086709 2.7039642 2.6987104 2.6929243 2.6866217 2.6798174 2.672527 2.6647656 2.6565478 2.647889 2.6388032 2.6293054 2.61941 2.609131 2.5984828 2.5874789 2.576133 2.5644584 2.5524683 2.540176 2.5275939 2.5147345 2.5016105 2.4882336 2.4746158 2.4607685 2.4467032 2.432431 2.4179626 2.4033086 2.3884795 2.373485 2.3583357 2.3430407 2.3276098 2.3120515 2.296375 2.2805893 2.2647026 2.2487228 2.2326584 2.2165167 2.2003057 2.1840322 2.1677036 2.1513267 2.1349082 2.1184545 2.1019719 2.0854661 2.0689437 2.0524096 2.03587 2.0193295 2.0027938 1.9862672 1.9697549 1.9532615 1.9367913 1.9203484 1.9039371 1.8875613 1.8712249 1.8549312 1.838684 1.8224865 1.806342 1.7902535 1.7742242 1.7582566 1.7423534 1.7265174 1.7107509 1.6950564 1.6794361 1.663892 1.6484263 1.6330407 1.6177372 1.6025175 1.5873832 1.5723358 1.557377 1.5425079 1.5277299 1.5130442 1.498452 1.4839542 1.4695519 1.4552461 1.4410375 1.4269271 1.4129153 1.3990031 1.385191 1.3714793 1.3578688 1.3443599 1.3309528 1.317648 1.3044459 1.2913464 1.27835 1.2654568 1.2526668 1.2399803 1.2273972 1.2149174 1.2025411 1.1902682 1.1780984 1.1660318 1.1540681 1.1422073 1.1304489 1.118793 1.1072391 1.095787 1.0844364 1.0731869 1.0620383 1.0509901 1.0400419 1.0291933 1.0184441 1.0077934 0.99724126 0.9867869 0.9764299 0.9661697 0.95600593 0.945938 0.93596536 0.92608744 0.91630375 0.9066137 0.8970167 0.8875122 0.8780996 0.86877835 0.85954773 0.85040724 0.8413562 0.832394 0.8235201 0.8147338 0.80603445 0.7974214 0.7888941 0.78045183 0.772094 0.76381993 0.75562894 0.74752045 0.7394938 0.73154825 0.72368324 0.71589804 0.70819205 0.7005646 0.69301504 0.68554276 0.678147 0.67082715 0.6635826 0.6564127 0.6493167 0.6422941 0.6353442 0.62846625 0.62165976 0.614924 0.60825837 0.6016622 0.59513485 0.5886758 0.5822843 0.57595974 0.56970155 0.56350905 0.5573817 0.5513188 0.54531986 0.5393842 0.5335112 0.5277003 0.52195084 0.5162623 0.5106341 0.5050656 0.49955627 0.4941055 0.4887127 0.48337737 0.47809887 0.4728767 0.46771026 0.462599 0.45754242 0.45253992 0.447591 0.4426951 0.4378517 0.43306026 0.42832026 0.42363116 0.4189925 0.4144037 0.40986434 0.4053738 0.40093172 0.39653748 0.39219064 0.38789073 0.38363725 0.37942973 0.37526768 0.37115064 0.36707816 0.36304975 0.35906497 0.35512337 0.35122448 0.34736788 0.3435531 0.33977973 0.33604735 0.33235547 0.32870373 0.32509166 0.3215189 0.31798497 0.3144895 0.3110321 0.3076123 0.30422977 0.30088407 0.29757488 0.29430172 0.29106426 0.28786212 0.28469494 0.2815623 0.27846387 0.27539927 0.27236816 0.26937014 0.2664049 0.26347208 0.2605713 0.25770226 0.2548646 0.25205797 0.24928208 0.24653655 0.24382108 0.24113536 0.23847903 0.23585182 0.23325337 0.23068342 0.22814162 0.22562769 0.22314131 0.22068222 0.21825008 0.21584462 0.21346556 0.21111259 0.20878544 0.20648384 0.20420751 0.20195617 0.19972955 0.19752738 0.1953494 0.19319534 0.19106495 0.18895797 0.18687414 0.1848132 0.18277493 0.18075906 0.17876536 0.17679356 0.17484346 0.17291479 0.17100735 0.16912088 0.16725516 0.16540997 0.16358508 0.16178027 0.15999532 0.15823002 0.15648414 0.15475748 0.15304984 0.15136099 0.14969073 0.14803886 0.14640519 0.1447895 0.1431916 0.14161132 0.14004843 0.13850276 0.13697411 0.1354623 0.13396716 0.13248847 0.1310261 0.12957983 0.1281495 0.12673493 0.12533595 0.123952396 0.12258408 0.121230856 0.119892545 0.118568994 0.117260024 0.11596549 0.11468523 0.113419086 0.1121669 0.11092852 0.1097038 0.10849258 0.10729472 0.10611007 0.10493849 0.10377983 0.10263395 0.101500705 0.100379966 0.09927159 0.098175436 0.09709137 0.09601927 0.094959 0.09391042 0.09287342 0.091847844 0.0908336 0.08983054 0.08883855 0.0878575 0.08688728 0.08592777 0.08497884 0.08404039 0.08311229 0.08219444 0.08128671 0.08038901 0.079501204 0.078623205 0.07775489 0.07689617 0.07604692 0.07520705 0.07437644 0.07355501 0.07274264 0.071939245 0.07114471 0.07035895 0.069581866 0.068813354 0.06805333 0.0673017 0.06655836 0.065823235 0.06509622 0.06437723 0.06366618 0.06296299 0.06226755 0.061579794 0.06089963 0.060226977 0.05956175 0.058903873 0.058253255 0.057609823 0.056973495 0.056344192 0.055721838 0.055106357 0.054497674 0.053895712 0.053300396 0.05271165 0.05212941 0.0515536 0.050984148 0.050420985

</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="2.725" PeakHeight="305.836" Num="5" zHalfNm="268.557" Error="1.513">
-89.356 2.402 -1.431 0.565 0.179
</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="6516.065" A="-1.1689812E11" B="3.6079668E7" C="-2783.7996" Error="0.00173"/>
<QuasiParabolic ID="2" StartDistance="6516.065" EndDistance="6552.13" A="0.0" B="473.34888" C="-0.03260959" Error="0.00915"/>
<QuasiParabolic ID="3" StartDistance="6552.13" EndDistance="6554.0" A="-1.61938905E12" B="4.94116288E8" C="-37691.777" Error="0.0332"/>
<QuasiParabolic ID="4" StartDistance="6554.0" EndDistance="6578.0" A="7.1776076E10" B="-2.1954864E7" C="1678.924" Error="0.0394"/>
<QuasiParabolic ID="5" StartDistance="6578.0" EndDistance="6586.0" A="-8.242126E10" B="2.4927876E7" C="-1884.6775" Error="0.00525"/>
<QuasiParabolic ID="6" StartDistance="6586.0" EndDistance="6591.0" A="2.88378821E12" B="-8.7583418E8" C="66499.93" Error="0.0296"/>
<QuasiParabolic ID="7" StartDistance="6591.0" EndDistance="6599.0" A="6.2206883E11" B="-1.895288E8" C="14436.104" Error="0.00764"/>
<QuasiParabolic ID="8" StartDistance="6599.0" EndDistance="6648.0" A="2.88688859E12" B="-8.7594182E8" C="66444.97" Error="0.0354"/>
<QuasiParabolic ID="9" StartDistance="6648.0" EndDistance="6672.0" A="-5.7877505E12" B="1.73375706E9" C="-129832.02" Error="0.0116"/>
<QuasiParabolic ID="10" StartDistance="6672.0" EndDistance="6675.836" A="-6.8515267E12" B="2.05263488E9" C="-153728.73" Error="3.64E-6"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.195" Depth="0.154"/>
<TopsideChapman PeakHeight="305.836" PeakDensity="92129.34" PeakScaleHeight="28.131" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
