<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-15 -135 01:25:00.000"
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) 01:25:00</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">
FF202613505150125001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="2.775" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.374" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.362" 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="3.075" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="321.433" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="321.433" 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="88" Val="2.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="321.433" 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="286.465" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.465" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.433" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.537" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.842" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.372" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="38.700" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.100" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="5">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.675 2.7 2.725 2.75 2.775
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
321.433 330.000 340.000 355.000 374.828
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="492">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.00067 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.00133 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.002 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 286.465 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0
</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 0.35265058 0.35186794 0.35086685 0.34972504 0.34844565 0.34695974 0.34527344 0.34339368 0.3413282 0.33908543 0.33660662 0.3339719 0.33112627 0.32808504 0.3248016 0.32129765 0.3175367 0.31354803 0.30936205 0.3048498 0.30011415 0.2950791 0.2897402 0.28408763 0.27805203 0.27168745 0.26493174 0.25773472 0.250095 0.24197415 0.23332517 0.2240501 0.21413884 0.20356232 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 0.2 0.20415653 0.20831862 0.21248071 0.2166428 0.22080489 0.22496697 0.22912906 0.23329115 0.23745324 0.24161533 0.24577741 0.2499395 0.25410157 0.25826368 0.26242575 0.26658785 0.27074993 0.27491203 0.2790741 0.2832362 0.28739828 0.29156038 0.29572245 0.29988453 0.30404663 0.3082087 0.3123708 0.31653288 0.32069498 0.32485706 0.32901916 0.33318123 0.33734334 0.3415054 0.3456675 0.34982958 0.3539917 0.354 0.37632653 0.39997983 0.42490837 0.4510948 0.47852755 0.50718266 0.53705037 0.5681083 0.600339 0.6337374 0.6682892 0.70397913 0.7407946 0.77873266 0.81777555 0.85790646 0.89912325 0.9413932 0.9846971 1.0290203 1.0743243 1.1205741 1.1677309 1.2157631 1.2646022 1.314199 1.3644854 1.4153974 1.4668472 1.5187553 1.5710286 1.6235793 1.6762872 1.729055 1.7817545 1.8342842 1.8865191 1.9383277 1.9895856 2.040172 2.0899448 2.1387973 2.1865883 2.2332134 2.2785332 2.3224406 2.3648336 2.4056025 2.4446356 2.481848 2.51715 2.5504515 2.581686 2.6107762 2.637654 2.6622622 2.6845496 2.7044683 2.7219763 2.7370348 2.7496173 2.7596936 2.7672458 2.7722592 2.7747238 2.775 2.7748141 2.7734857 2.7709136 2.7671387 2.762202 2.7561455 2.7490103 2.7408376 2.7316687 2.7215447 2.7105057 2.6985922 2.6858432 2.6722984 2.657996 2.6429734 2.627268 2.610916 2.5939524 2.5764127 2.5583298 2.5397375 2.5206673 2.5011506 2.4812179 2.4608982 2.44022 2.4192114 2.3978984 2.3763072 2.3544626 2.3323886 2.3101084 2.2876441 2.2650173 2.2422483 2.219357 2.1963625 2.1732829 2.1501355 2.126937 2.103703 2.0804493 2.05719 2.033939 2.0107093 1.9875135 1.9643636 1.9412708 1.9182458 1.8952986 1.872439 1.8496761 1.8270183 1.8044736 1.7820498 1.7597538 1.7375925 1.715572 1.6936983 1.6719768 1.6504126 1.6290104 1.6077747 1.5867095 1.5658184 1.5451051 1.5245726 1.5042238 1.4840614 1.4640874 1.4443042 1.4247137 1.4053174 1.386117 1.3671134 1.3483077 1.3297011 1.311294 1.293087 1.2750804 1.2572746 1.2396697 1.2222656 1.205062 1.1880589 1.1712556 1.1546518 1.1382468 1.1220399 1.1060305 1.0902176 1.0746002 1.0591775 1.0439482 1.0289112 1.0140654 0.9994094 0.98494196 0.97066176 0.95656735 0.9426573 0.92893016 0.9153843 0.9020183 0.88883054 0.8758194 0.8629832 0.8503204 0.8378293 0.82550824 0.8133554 0.8013692 0.78954786 0.77788967 0.7663929 0.7550557 0.74387646 0.7328534 0.7219847 0.7112686 0.70070344 0.6902874 0.6800187 0.6698957 0.6599165 0.65007955 0.64038295 0.6308251 0.62140423 0.6121186 0.60296655 0.59394646 0.5850565 0.57629514 0.5676607 0.5591515 0.5507659 0.5425023 0.5343591 0.5263347 0.5184275 0.51063603 0.50295866 0.49539384 0.48794007 0.4805959 0.47335973 0.46623015 0.4592057 0.4522849 0.44546637 0.43874863 0.4321303 0.42561 0.41918638 0.41285807 0.40662372 0.400482 0.39443162 0.38847128 0.38259968 0.37681562 0.37111777 0.36550495 0.35997593 0.35452953 0.34916452 0.34387973 0.33867404 0.3335463 0.32849538 0.32352012 0.3186195 0.31379238 0.3090377 0.3043544 0.29974145 0.2951978 0.2907225 0.28631446 0.28197277 0.27769637 0.27348438 0.26933584 0.26524976 0.26122528 0.25726146 0.25335738 0.24951223 0.24572507 0.24199505 0.23832135 0.23470312 0.23113954 0.22762978 0.22417307 0.22076859 0.21741557 0.21411327 0.2108609 0.20765771 0.20450298 0.201396 0.19833605 0.19532241 0.1923544 0.18943132 0.18655251 0.18371731 0.18092507 0.17817514 0.17546687 0.17279965 0.17017286 0.16758588 0.16503814 0.16252902 0.16005795 0.15762436 0.15522769 0.15286739 0.15054289 0.14825365 0.14599916 0.14377889 0.14159231 0.13943891 0.13731822 0.13522972 0.13317293 0.13114737 0.12915257 0.12718806 0.12525338 0.12334809 0.12147174 0.1196239 0.117804125 0.116012 0.114247106 0.11250902 0.11079735 0.10911169 0.10745165 0.10581683 0.10420687 0.10262137 0.10105997 0.09952231 0.098008014 0.09651674 0.095048144 0.093601875 0.09217759 0.09077496 0.08939366 0.08803336 0.08669375 0.085374504 0.084075324 0.082795896 0.08153593 0.08029512 0.07907319 0.07786984 0.07668479 0.075517766 0.07436849 0.073236704 0.07212213 0.07102451 0.069943585 0.0688791 0.06783081 0.06679847 0.06578183 0.06478066 0.063794725 0.06282379 0.061867617 0.060925998 0.059998706 0.05908552 0.05818623 0.057300624 0.056428492 0.05556963 0.054723836 0.05389091 0.05307066 0.05226289 0.051467415 0.050684042

</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="2.775" PeakHeight="286.465" Num="5" zHalfNm="259.465" Error="0.263">
-65.754 0.514 -0.334 0.195 -0.084
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6517.001" A="-1.11089803E11" B="3.4286976E7" C="-2645.4746" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.001" EndDistance="6554.001" A="0.0" B="214.32053" C="0.007147999" Error="0.00378"/>
<QuasiParabolic ID="3" StartDistance="6554.001" EndDistance="6589.0" A="3.11499162E10" B="-9578635.0" C="736.35736" Error="0.00378"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6590.0" A="-9.0420852E11" B="2.74336512E8" C="-20808.273" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6590.0" EndDistance="6592.0" A="7.1645596E12" B="-2.17445504E9" C="164987.75" Error="0.0177"/>
<QuasiParabolic ID="6" StartDistance="6592.0" EndDistance="6603.0" A="2.6165539E12" B="-7.9459891E8" C="60326.332" Error="0.0159"/>
<QuasiParabolic ID="7" StartDistance="6603.0" EndDistance="6626.0" A="5.8352389E12" B="-1.76951488E9" C="134150.05" Error="0.0169"/>
<QuasiParabolic ID="8" StartDistance="6626.0" EndDistance="6641.0" A="1.18259266E12" B="-3.65154432E8" C="28176.572" Error="0.0141"/>
<QuasiParabolic ID="9" StartDistance="6641.0" EndDistance="6656.465" A="-1.28706968E13" B="3.86712678E9" C="-290471.3" Error="0.00555"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.002" Depth="0.154"/>
<TopsideChapman PeakHeight="286.465" PeakDensity="95541.25" PeakScaleHeight="20.372" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
