<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-20 -140 23:30:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.20 (140) 23:30:00</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">
FF202614005202330001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.875" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.289" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.743" 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="4.225" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="267.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="267.500" 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="3.625" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="320.000" 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="289.638" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.500" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.127" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="44.506" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.873" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.956" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="40.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.960" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="37">
<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 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 3.8 3.825 3.85 3.875
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
267.500 270.000 270.000 272.500 272.500 275.000 275.000 277.500 277.500 280.000 282.500 282.500 285.000 285.000 287.500 287.500 290.000 292.500 295.000 297.500 300.000 302.500 305.000 310.000 312.500 317.500 320.000 325.000 330.000 337.500 345.000 350.000 360.000 371.786 386.487 405.340 430.392
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 66 81 78 96 93 87 84 99 96 96 99 96 96 96 96 99 96 96 93 81 81 81 81 81 81 78 78 78 78 75 75 81 81 0 0 90
</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 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="573">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 145.04767 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 180.09534 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 215.143 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 289.638 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0
</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 0.35313663 0.3524263 0.35157037 0.35049725 0.34921128 0.34779054 0.3460947 0.34420434 0.34212717 0.33987173 0.3373106 0.33459523 0.33160496 0.32842407 0.32494384 0.32125285 0.3173157 0.3131054 0.30860436 0.3038052 0.29871124 0.29326478 0.28748128 0.28137296 0.2748965 0.26791152 0.26051685 0.25268632 0.24422254 0.23519665 0.22560693 0.21522912 0.20410472 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 0.20397513 0.20836914 0.21276315 0.21715717 0.22155118 0.2259452 0.23033921 0.23473322 0.23912725 0.24352126 0.24791528 0.2523093 0.25670332 0.2610973 0.26549134 0.26988536 0.2742794 0.27867338 0.2830674 0.28746143 0.29185542 0.29624945 0.30064347 0.30503747 0.3094315 0.31382552 0.31821954 0.32261354 0.32700756 0.3314016 0.33579558 0.3401896 0.34458363 0.34897763 0.35337165 0.354 0.3729049 0.39680827 0.42260838 0.45015308 0.4792679 0.5097932 0.54157186 0.57449365 0.6084752 0.64347136 0.6794671 0.7164759 0.75451404 0.7936296 0.83387697 0.8753272 0.9180434 0.96213645 1.0076722 1.0547602 1.1035172 1.1540425 1.2064493 1.26087 1.3174218 1.3762333 1.4374005 1.5010593 1.5672759 1.6361438 1.7076795 1.7818819 1.8586779 1.9379174 2.0194075 2.1028066 2.1877306 2.2737083 2.3601794 2.4465806 2.5323043 2.616776 2.6994946 2.779995 2.8579233 2.9329748 3.0049605 3.0737422 3.1392503 3.2014573 3.260378 3.3160667 3.368586 3.4179943 3.464402 3.5078826 3.5485346 3.5864437 3.6216898 3.6543624 3.6845343 3.7122836 3.7376683 3.7607524 3.7815917 3.8002346 3.8167286 3.8311098 3.8434136 3.853666 3.8618956 3.8681183 3.8723488 3.874598 3.875 3.874914 3.8737915 3.8713973 3.8677669 3.8629353 3.856938 3.8498106 3.8415887 3.832308 3.8220036 3.810711 3.7984648 3.7853 3.7712512 3.7563522 3.7406366 3.7241378 3.7068884 3.6889205 3.6702662 3.650956 3.631021 3.6104908 3.589395 3.5677626 3.5456212 3.5229983 3.499921 3.4764154 3.4525068 3.4282203 3.40358 3.3786094 3.3533313 3.327768 3.3019412 3.2758715 3.2495792 3.2230842 3.1964052 3.1695607 3.1425686 3.1154459 3.088209 3.0608742 3.033457 3.005972 2.9784336 2.9508555 2.923251 2.895633 2.8680134 2.8404043 2.8128164 2.7852612 2.7577486 2.7302883 2.7028902 2.675563 2.6483157 2.6211562 2.5940924 2.5671318 2.5402815 2.5135481 2.4869385 2.460458 2.434113 2.4079087 2.3818502 2.3559425 2.3301902 2.3045974 2.2791681 2.2539065 2.2288158 2.2038994 2.1791604 2.1546016 2.1302257 2.106035 2.0820322 2.058219 2.0345974 2.0111692 1.9879359 1.9648988 1.9420592 1.9194182 1.8969768 1.8747358 1.8526958 1.8308576 1.8092214 1.7877876 1.7665565 1.7455281 1.7247026 1.7040797 1.6836594 1.6634415 1.6434256 1.6236112 1.603998 1.5845853 1.5653726 1.5463592 1.5275441 1.508927 1.4905066 1.4722823 1.454253 1.4364176 1.4187753 1.4013249 1.3840653 1.3669953 1.3501137 1.3334196 1.3169112 1.3005877 1.2844476 1.2684895 1.2527121 1.2371142 1.2216944 1.2064509 1.1913829 1.1764885 1.1617664 1.1472152 1.1328335 1.1186197 1.1045722 1.0906898 1.0769708 1.0634137 1.0500172 1.0367796 1.0236995 1.0107754 0.9980057 0.9853889 0.9729236 0.9606081 0.9484411 0.93642104 0.92454636 0.91281563 0.90122736 0.88978004 0.8784722 0.8673024 0.8562692 0.845371 0.83460647 0.8239742 0.8134726 0.8031004 0.7928561 0.7827383 0.7727456 0.7628767 0.75313 0.74350435 0.73399824 0.7246104 0.7153395 0.7061841 0.69714296 0.6882147 0.6793982 0.6706919 0.6620947 0.6536053 0.6452224 0.63694483 0.6287713 0.62070054 0.61273146 0.60486275 0.5970932 0.58942175 0.58184713 0.57436824 0.5669839 0.559693 0.55249435 0.5453869 0.53836954 0.5314412 0.52460074 0.5178472 0.5111794 0.50459635 0.49809703 0.49168038 0.48534542 0.47909114 0.47291654 0.46682063 0.46080247 0.45486107 0.44899553 0.44320485 0.43748814 0.43184447 0.42627296 0.42077267 0.41534275 0.4099823 0.40469044 0.39946637 0.3943092 0.3892181 0.38419226 0.37923083 0.37433302 0.36949804 0.36472508 0.3600134 0.35536218 0.3507707 0.34623817 0.34176388 0.3373471 0.33298704 0.32868305 0.32443437 0.32024035 0.3161003 0.31201348 0.30797926 0.30399695 0.3000659 0.29618546 0.292355 0.28857386 0.28484145 0.2811571 0.27752024 0.27393022 0.2703865 0.26688844 0.26343548 0.26002705 0.25666258 0.2533415 0.25006324 0.2468273 0.24363309 0.24048011 0.23736782 0.2342957 0.23126322 0.2282699 0.22531523 0.2223987 0.21951982 0.21667814 0.21387316 0.21110441 0.20837142 0.20567374 0.2030109 0.20038249 0.19778803 0.1952271 0.19269927 0.19020411 0.1877412 0.18531014 0.18291049 0.18054187 0.17820388 0.17589611 0.17361818 0.17136972 0.16915034 0.16695964 0.16479729 0.16266291 0.16055614 0.1584766 0.15642399 0.15439792 0.15239806 0.15042408 0.14847565 0.14655241 0.14465407 0.14278029 0.14093076 0.13910517 0.13730319 0.13552454 0.13376892 0.13203602 0.13032554 0.12863721 0.12697072 0.12532581 0.123702206 0.12209961 0.12051776 0.118956394 0.11741524 0.115894035 0.114392534 0.112910464 0.11144759 0.11000366 0.10857842 0.10717164 0.105783075 0.10441249 0.10305966 0.10172434 0.10040632 0.099105366 0.09782126 0.09655378 0.09530272 0.094067864 0.092849 0.091645926 0.09045843 0.08928631 0.08812939 0.086987436 0.08586028 0.084747724 0.08364958 0.082565665 0.081495784 0.08043977 0.079397425 0.07836859 0.077353075 0.076350726 0.075361356 0.0743848 0.0734209 0.07246949 0.071530394 0.070603475 0.06968856 0.0687855 0.06789414 0.06701433 0.06614591 0.06528875 0.064442694 0.063607596 0.062783316 0.06196972 0.061166666 0.060374014 0.059591636 0.05881939 0.05805715 0.057304792 0.056562178 0.055829186 0.055105694 0.054391574 0.053686704 0.052990973 0.052304253 0.051626433 0.050957397 0.05029703

</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="3.875" PeakHeight="289.638" Num="5" zHalfNm="258.5" Error="2.885">
-78.981 8.134 -5.862 3.067 -0.853
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" 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="6515.048" A="-1.23747574E11" B="3.8193696E7" C="-2946.9192" Error="0.00172"/>
<QuasiParabolic ID="2" StartDistance="6515.048" EndDistance="6550.095" A="0.0" B="36.491306" C="0.03442889" Error="7.49E-4"/>
<QuasiParabolic ID="3" StartDistance="6550.095" EndDistance="6551.0" A="2.98383678E12" B="-9.1108736E8" C="69548.086" Error="0.0"/>
<QuasiParabolic ID="4" StartDistance="6551.0" EndDistance="6553.0" A="-6.4865403E11" B="1.97900896E8" C="-15094.579" Error="0.0167"/>
<QuasiParabolic ID="5" StartDistance="6553.0" EndDistance="6584.0" A="4.6274228E10" B="-1.4193802E7" C="1088.4436" Error="0.0193"/>
<QuasiParabolic ID="6" StartDistance="6584.0" EndDistance="6587.0" A="5.6651337E12" B="-1.72101632E9" C="130707.41" Error="0.0173"/>
<QuasiParabolic ID="7" StartDistance="6587.0" EndDistance="6588.0" A="3.73028356E11" B="-1.14182984E8" C="8737.365" Error="0.0"/>
<QuasiParabolic ID="8" StartDistance="6588.0" EndDistance="6599.0" A="3.32235538E12" B="-1.00954637E9" C="76691.48" Error="0.00548"/>
<QuasiParabolic ID="9" StartDistance="6599.0" EndDistance="6610.0" A="7.1236914E12" B="-2.16164096E9" C="163984.6" Error="0.0132"/>
<QuasiParabolic ID="10" StartDistance="6610.0" EndDistance="6629.0" A="1.72277902E13" B="-5.218857E9" C="395241.47" Error="0.0158"/>
<QuasiParabolic ID="11" StartDistance="6629.0" EndDistance="6659.638" A="-1.523971E13" B="4.5767383E9" C="-343602.62" Error="0.00684"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.143" Depth="0.154"/>
<TopsideChapman PeakHeight="289.638" PeakDensity="186298.08" PeakScaleHeight="23.956" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
