<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.21 (111) 06:10:00</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">
FF202611104210610001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.875" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.490" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.524" 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="4.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="242.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="242.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.725" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="302.981" 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="264.658" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.652" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.285" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="39.871" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.668" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="21.470" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="35.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="76">
<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 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 3.725 3.75 3.775 3.8 3.825 3.85 3.875
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
242.500 242.500 242.500 242.500 242.500 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 247.500 247.500 247.500 247.500 247.500 250.000 250.000 250.000 250.000 250.000 250.000 252.500 252.500 252.500 252.500 252.500 255.000 255.000 255.000 255.000 255.000 255.000 257.500 257.500 257.500 260.000 260.000 260.000 260.000 262.500 262.500 265.000 265.000 265.000 265.000 265.000 267.500 270.000 270.000 272.500 272.500 272.500 275.000 275.000 277.500 280.000 280.000 282.500 282.500 285.000 285.000 287.500 290.000 295.000 297.135 299.737 302.981 307.135 312.646 320.308 331.687 350.353 386.602
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 78 78 75 78 78 81 81 81 69 72 57 54 57 57 66 69 87 81 75 75 75 75 75 72 72 75 75 75 72 75 63 63 48 48 66 66 84 81 87 87 87 87 111 105 99 99 87 84 102 99 102 93 87 90 99 102 102 96 90 90 93 93 90 87 99 96 84 84 93 90 90 84 84 81 78
</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 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 1.5625 1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="509">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.91667 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 171.83333 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 202.75 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 264.658 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0
</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 0.35347393 0.3529119 0.3519786 0.3509026 0.34953943 0.34789655 0.34598285 0.3438088 0.34138623 0.3386593 0.33571413 0.33243394 0.32884502 0.3249759 0.3207348 0.3162249 0.311316 0.3060709 0.30039963 0.29436976 0.2878726 0.28096467 0.27349284 0.26549044 0.25688842 0.24761072 0.23761433 0.22685163 0.21513027 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 0.20083019 0.20581132 0.21079245 0.21577358 0.22075471 0.22573584 0.23071699 0.23569812 0.24067925 0.24566038 0.2506415 0.25562266 0.2606038 0.26558492 0.27056605 0.27554718 0.2805283 0.28550944 0.29049057 0.2954717 0.30045283 0.30543396 0.3104151 0.31539622 0.32037735 0.32535848 0.3303396 0.33532074 0.3403019 0.34528303 0.35026416 0.354 0.36160225 0.39306474 0.42607847 0.46054873 0.49642637 0.5337443 0.5725491 0.6129315 0.65500396 0.6989107 0.7447994 0.79285496 0.8432709 0.8962739 0.95208865 1.0109831 1.0732248 1.1391052 1.2089052 1.2829351 1.3614454 1.4446732 1.5327102 1.6255999 1.7231289 1.8249009 1.9302744 2.038318 2.147898 2.257792 2.3667393 2.4735713 2.5773056 2.6772227 2.7727911 2.8636777 2.9497395 3.030934 3.1073349 3.1790576 3.246256 3.3091152 3.3678052 3.4225214 3.4734197 3.520676 3.5644581 3.604887 3.6421132 3.6762488 3.7074008 3.7356749 3.761148 3.7838988 3.8040051 3.8215156 3.8364863 3.8489614 3.858972 3.8665497 3.8717155 3.8744829 3.875 3.8749044 3.8735409 3.8706002 3.8661315 3.8601835 3.8528054 3.844047 3.8339577 3.8225865 3.8099825 3.796194 3.7812698 3.7652574 3.7482033 3.7301548 3.711157 3.691255 3.6704934 3.648915 3.6265626 3.6034772 3.5796998 3.5552697 3.5302258 3.5046053 3.478445 3.4517806 3.4246464 3.3970761 3.369102 3.3407557 3.3120677 3.2830672 3.253783 3.2242422 3.1944716 3.1644964 3.1343415 3.1040301 3.0735855 3.043029 3.012382 2.9816644 2.9508955 2.9200938 2.8892767 2.8584611 2.8276634 2.7968988 2.766182 2.7355268 2.7049465 2.674454 2.6440609 2.6137788 2.5836184 2.55359 2.5237033 2.4939673 2.4643905 2.434981 2.4057465 2.3766942 2.3478308 2.3191621 2.2906947 2.2624333 2.2343836 2.20655 2.1789367 2.1515477 2.124387 2.097458 2.070763 2.0443058 2.018088 1.9921128 1.9663813 1.9408957 1.9156573 1.8906677 1.8659277 1.8414384 1.8172004 1.7932143 1.7694805 1.7459991 1.7227702 1.6997936 1.6770692 1.6545966 1.6323752 1.6104045 1.5886837 1.567212 1.5459884 1.525012 1.5042816 1.4837961 1.4635541 1.4435544 1.4237955 1.4042758 1.3849939 1.3659482 1.347137 1.3285587 1.3102114 1.2920935 1.2742031 1.2565383 1.2390972 1.2218779 1.2048786 1.1880972 1.1715318 1.1551802 1.1390406 1.1231108 1.1073887 1.0918726 1.07656 1.061449 1.0465376 1.0318236 1.0173049 1.0029794 0.98884505 0.97489977 0.96114147 0.947568 0.9341773 0.9209673 0.907936 0.89508116 0.8824009 0.8698931 0.85755575 0.84538674 0.83338416 0.82154596 0.8098701 0.79835474 0.7869978 0.7757973 0.76475143 0.75385815 0.7431156 0.73252183 0.72207505 0.71177334 0.70161486 0.6915978 0.6817203 0.6719806 0.66237694 0.65290755 0.6435706 0.6343644 0.62528735 0.6163376 0.6075135 0.5988135 0.59023577 0.5817788 0.573441 0.5652208 0.5571165 0.5491267 0.5412497 0.5334841 0.52582836 0.5182809 0.5108404 0.5035054 0.49627432 0.48914587 0.4821186 0.47519115 0.46836212 0.46163017 0.45499396 0.4484522 0.44200355 0.43564677 0.42938054 0.42320362 0.4171148 0.41111282 0.40519652 0.39936465 0.39361608 0.38794962 0.38236412 0.37685847 0.37143156 0.36608228 0.3608095 0.35561222 0.35048932 0.3454398 0.34046257 0.3355567 0.33072108 0.3259548 0.32125685 0.31662628 0.3120621 0.30756345 0.30312932 0.29875883 0.2944511 0.2902052 0.28602028 0.2818955 0.27782992 0.27382278 0.26987323 0.26598045 0.2621436 0.25836194 0.25463465 0.25096098 0.24734013 0.24377136 0.24025396 0.23678714 0.23337023 0.2300025 0.22668321 0.22341174 0.22018735 0.2170094 0.2138772 0.21079013 0.2077475 0.2047487 0.2017931 0.19888009 0.19600904 0.19317937 0.19039047 0.18764175 0.18493266 0.18226263 0.17963107 0.17703745 0.17448121 0.17196184 0.1694788 0.16703156 0.1646196 0.16224243 0.15989955 0.15759045 0.15531465 0.15307169 0.15086108 0.14868237 0.14653508 0.14441876 0.14233299 0.14027731 0.13825129 0.1362545 0.13428654 0.13234696 0.13043538 0.1285514 0.12669459 0.124864586 0.123060994 0.121283434 0.119531535 0.11780492 0.11610323 0.114426106 0.112773195 0.11114415 0.109538615 0.10795626 0.10639675 0.10485976 0.103344955 0.10185203 0.10038066 0.09893053 0.09750134 0.09609279 0.094704576 0.09333641 0.091988 0.09065907 0.08934932 0.08805849 0.0867863 0.08553248 0.08429677 0.08307891 0.08187864 0.0806957 0.079529844 0.07838083 0.07724842 0.07613235 0.075032406 0.07394835 0.072879955 0.071826994 0.07078923 0.06976647 0.06875848 0.06776504 0.06678596 0.06582102 0.06487002 0.06393276 0.06300904 0.062098656 0.061201427 0.06031716 0.059445668 0.05858676 0.057740267 0.056906 0.056083784 0.055273447 0.054474816 0.05368772 0.052912 0.052147485 0.051394016 0.05065143

</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="264.658" Num="5" zHalfNm="236.652" Error="0.439">
-68.303 10.53 -6.26 2.577 -0.452
</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="6510.917" A="-1.58830494E11" B="4.902176E7" C="-3782.4177" Error="0.00166"/>
<QuasiParabolic ID="2" StartDistance="6510.917" EndDistance="6541.833" A="0.0" B="-266.66522" C="0.08098339" Error="0.00551"/>
<QuasiParabolic ID="3" StartDistance="6541.833" EndDistance="6571.0" A="4.6595138E10" B="-1.4328176E7" C="1101.4951" Error="0.0108"/>
<QuasiParabolic ID="4" StartDistance="6571.0" EndDistance="6581.0" A="5.1741013E12" B="-1.57497536E9" C="119854.13" Error="0.0384"/>
<QuasiParabolic ID="5" StartDistance="6581.0" EndDistance="6586.0" A="4.8606216E12" B="-1.47970714E9" C="112616.01" Error="0.00975"/>
<QuasiParabolic ID="6" StartDistance="6586.0" EndDistance="6606.0" A="2.21726365E13" B="-6.7369236E9" C="511736.62" Error="0.0627"/>
<QuasiParabolic ID="7" StartDistance="6606.0" EndDistance="6634.658" A="-1.83874492E13" B="5.542848E9" C="-417704.2" Error="0.00216"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="92.75" Depth="0.154"/>
<TopsideChapman PeakHeight="264.658" PeakDensity="186298.08" PeakScaleHeight="21.47" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
