<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-15 -135 00:00:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.15 (135) 00:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" 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">
FF202613505150000001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.414" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.900" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.675" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.675" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.225" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="291.601" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="291.601" 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="2.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="291.601" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.675" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.675" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="285.701" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="258.489" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.924" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.908" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.926" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.521" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="39.340" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.050" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
291.601 300.000 307.500 317.500 327.500 337.500 350.000 365.000 380.000 396.546
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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" >
-10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="497">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 145.709 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 181.418 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 217.127 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 285.701 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0
</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 0.35250106 0.35164472 0.35064512 0.34943143 0.34800863 0.34638256 0.3445599 0.34254822 0.3403557 0.33792278 0.33532998 0.33245555 0.32938346 0.32606673 0.3225273 0.3187282 0.3146991 0.3104147 0.3058051 0.30092296 0.2957487 0.29027867 0.28441587 0.27819183 0.27158678 0.2645609 0.25708976 0.24914514 0.24065033 0.23155957 0.2218513 0.21139511 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 0.20250995 0.20682259 0.21113524 0.21544787 0.2197605 0.22407314 0.22838579 0.23269843 0.23701106 0.2413237 0.24563634 0.24994898 0.2542616 0.25857425 0.26288688 0.26719952 0.27151218 0.27582482 0.28013745 0.28445008 0.28876272 0.29307535 0.297388 0.30170062 0.3060133 0.31032592 0.31463856 0.3189512 0.32326382 0.32757646 0.3318891 0.33620173 0.3405144 0.34482703 0.34913966 0.3534523 0.354 0.37151355 0.39272863 0.41518125 0.4388736 0.46380463 0.4899654 0.5173392 0.5459154 0.57568455 0.60662884 0.6387271 0.6719677 0.70633876 0.7418281 0.7784228 0.8160965 0.8548501 0.8946696 0.9355268 0.9774101 1.0203072 1.0641832 1.109031 1.1548054 1.2014804 1.2490193 1.2973878 1.346528 1.3964014 1.4469451 1.4980955 1.5497878 1.6019536 1.6544906 1.7073339 1.760383 1.813533 1.8666909 1.919747 1.9725918 2.0250924 2.0771441 2.1286292 2.1794057 2.229369 2.2783747 2.3263037 2.373041 2.418447 2.462417 2.5048358 2.5455787 2.5845437 2.6216266 2.6567335 2.6897662 2.720639 2.7492774 2.7755966 2.7995336 2.8210292 2.8400273 2.8564808 2.8703437 2.8815877 2.8901803 2.896102 2.8993375 2.9 2.89994 2.8988802 2.8965292 2.8929286 2.8881207 2.8821476 2.875052 2.866876 2.8576617 2.847451 2.8362856 2.8242066 2.8112545 2.7974696 2.782891 2.767558 2.7515085 2.7347796 2.7174084 2.69943 2.6808798 2.6617916 2.6421986 2.622133 2.6016264 2.5807087 2.55941 2.5377586 2.515782 2.4935076 2.4709606 2.4481661 2.4251482 2.40193 2.378534 2.3549817 2.3312936 2.3074892 2.2835877 2.2596076 2.2355657 2.2114792 2.1873636 2.1632342 2.1391058 2.114992 2.090906 2.06686 2.0428662 2.018936 1.9950796 1.9713078 1.9476297 1.9240546 1.9005909 1.8772469 1.8540298 1.830947 1.8080052 1.7852106 1.762569 1.740086 1.7177665 1.6956154 1.673637 1.6518354 1.6302143 1.6087772 1.587527 1.5664669 1.5455992 1.5249264 1.5044507 1.4841737 1.464097 1.4442223 1.4245507 1.4050832 1.3858207 1.366764 1.3479134 1.3292693 1.310832 1.2926015 1.2745779 1.2567607 1.2391499 1.2217449 1.2045454 1.1875504 1.1707596 1.1541718 1.1377864 1.1216024 1.1056186 1.089834 1.0742474 1.0588576 1.0436631 1.0286629 1.0138555 0.99923927 0.9848129 0.9705749 0.95652366 0.94265753 0.928975 0.9154744 0.9021541 0.88901234 0.87604743 0.8632577 0.8506414 0.83819675 0.8259221 0.8138155 0.80187523 0.79009956 0.77848667 0.7670348 0.75574213 0.74460685 0.7336272 0.7228014 0.71212757 0.70160395 0.6912288 0.68100035 0.67091686 0.66097647 0.65117747 0.6415181 0.63199663 0.6226114 0.6133606 0.60424256 0.5952556 0.586398 0.57766813 0.56906426 0.56058484 0.5522282 0.54399276 0.5358768 0.5278789 0.5199973 0.5122306 0.50457716 0.49703544 0.489604 0.4822813 0.47506586 0.4679562 0.46095088 0.45404842 0.44724748 0.44054657 0.43394434 0.42743942 0.42103043 0.41471604 0.4084949 0.4023657 0.39632717 0.39037803 0.38451695 0.37874275 0.37305418 0.36745 0.361929 0.35649 0.35113183 0.3458533 0.34065333 0.33553073 0.33048442 0.32551324 0.3206162 0.3157921 0.31104 0.3063588 0.3017475 0.29720503 0.29273042 0.28832266 0.28398082 0.2797039 0.2754909 0.271341 0.2672532 0.26322657 0.25926027 0.2553534 0.25150505 0.24771436 0.24398053 0.24030267 0.23667997 0.23311163 0.22959684 0.22613479 0.22272472 0.21936585 0.21605742 0.2127987 0.20958892 0.20642738 0.20331335 0.20024613 0.19722502 0.19424933 0.1913184 0.18843155 0.18558812 0.18278748 0.18002898 0.17731199 0.17463589 0.17200007 0.16940394 0.16684689 0.16432835 0.16184774 0.15940449 0.15699804 0.15462783 0.15229334 0.14999403 0.14772937 0.14549883 0.1433019 0.14113809 0.1390069 0.13690783 0.13484041 0.13280416 0.13079861 0.12882331 0.1268778 0.12496162 0.123074345 0.12121554 0.119384766 0.117581606 0.115805656 0.1140565 0.11233373 0.11063695 0.10896578 0.10731982 0.1056987 0.104102045 0.10252949 0.10098066 0.099455215 0.09795279 0.096473046 0.09501563 0.09358022 0.092166476 0.09077408 0.0894027 0.08805202 0.08672174 0.08541154 0.08412112 0.08285019 0.081598446 0.080365606 0.079151385 0.07795549 0.07677767 0.07561762 0.074475095 0.073349826 0.072241545 0.07115001 0.07007495 0.06901614 0.067973316 0.066946246 0.06593468 0.0649384 0.06395717 0.062990755 0.062038943 0.061101507 0.06017823 0.0592689 0.05837331 0.057491243 0.056622505 0.05576689 0.0549242 0.054094244 0.053276822 0.05247175 0.05167884 0.05089791 0.05012878

</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="2.9" PeakHeight="285.701" Num="5" zHalfNm="258.489" Error="1.52">
-67.71 -0.744 -0.114 0.089 -0.095
</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="6515.709" A="-1.19222583E11" B="3.6797092E7" C="-2839.1565" Error="0.00171"/>
<QuasiParabolic ID="2" StartDistance="6515.709" EndDistance="6551.418" A="0.0" B="530.6109" C="-0.041398317" Error="0.0102"/>
<QuasiParabolic ID="3" StartDistance="6551.418" EndDistance="6553.0" A="-2.19430597E12" B="6.6965888E8" C="-51091.63" Error="0.0261"/>
<QuasiParabolic ID="4" StartDistance="6553.0" EndDistance="6576.0" A="7.4997039E10" B="-2.2940804E7" C="1754.3732" Error="0.0396"/>
<QuasiParabolic ID="5" StartDistance="6576.0" EndDistance="6585.0" A="-6.7018248E10" B="2.0251192E7" C="-1529.6898" Error="0.0057"/>
<QuasiParabolic ID="6" StartDistance="6585.0" EndDistance="6594.0" A="2.93181325E12" B="-8.9055565E8" C="67628.01" Error="0.0304"/>
<QuasiParabolic ID="7" StartDistance="6594.0" EndDistance="6604.0" A="3.12587531E12" B="-9.4941587E8" C="72091.164" Error="0.015"/>
<QuasiParabolic ID="8" StartDistance="6604.0" EndDistance="6611.0" A="6.445313E12" B="-1.9546967E9" C="148202.69" Error="0.00288"/>
<QuasiParabolic ID="9" StartDistance="6611.0" EndDistance="6638.0" A="5.0195716E12" B="-1.5233728E9" C="115581.0" Error="0.0348"/>
<QuasiParabolic ID="10" StartDistance="6638.0" EndDistance="6655.701" A="-1.37252905E13" B="4.1243712E9" C="-309829.06" Error="0.0107"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="107.127" Depth="0.154"/>
<TopsideChapman PeakHeight="285.701" PeakDensity="104342.43" PeakScaleHeight="20.521" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
