<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 06:05:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 06:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610504150605001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.240" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.910" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.825" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.625" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="340.586" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="290.804" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.369" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.304" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="44.821" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.961" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.967" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.470" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="27">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 277.500 275.000 277.500 283.750 290.000 287.500 290.500 293.500 296.500 299.500 302.500 305.000 307.500 311.250 315.000 317.500 322.500 327.500 332.500 335.000 340.586 346.781 353.690 361.445 370.210 380.197
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 0 78 78 0 72 72 0 0 0 0 69 69 72 0 72 72 0 69 69 69 69 75 75 0 66 69
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.5625 1.5625 -1.5625 -1.5625 7.8125 -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="548">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.23534 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.47067 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.706 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 290.804 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0
</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 0.34957823 0.348154 0.34659868 0.34484494 0.3429 0.34077185 0.33840045 0.33586627 0.3331131 0.33009076 0.3269465 0.3235063 0.3197975 0.31590757 0.3117478 0.3073008 0.30261165 0.29757625 0.2922877 0.2866549 0.2806889 0.2743457 0.2675573 0.26039913 0.25281975 0.24464403 0.23596808 0.2267302 0.21678469 0.20616312 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 0.20224966 0.20649967 0.21074966 0.21499965 0.21924965 0.22349964 0.22774963 0.23199964 0.23624963 0.24049962 0.24474962 0.24899961 0.25324962 0.2574996 0.2617496 0.2659996 0.2702496 0.2744996 0.2787496 0.28299958 0.28724957 0.29149956 0.29574957 0.29999956 0.30424955 0.30849954 0.31274953 0.31699955 0.32124954 0.32549953 0.32974952 0.3339995 0.3382495 0.34249952 0.3467495 0.3509995 0.354 0.3605945 0.3833771 0.4066963 0.4305679 0.4550103 0.4800531 0.5057275 0.5320618 0.5590982 0.58687055 0.6154255 0.64480054 0.6750361 0.70617515 0.7382658 0.77134144 0.8054508 0.8406337 0.87692815 0.91437614 0.95300114 0.9928287 1.0338918 1.0761883 1.1197282 1.1644987 1.2104771 1.2576182 1.305872 1.3551548 1.4053735 1.4564104 1.5081354 1.5603883 1.613011 1.665813 1.7186111 1.7712146 1.8234276 1.8750751 1.9259664 1.975947 2.0248568 2.0725684 2.1189702 2.1639462 2.2074244 2.249333 2.2896163 2.3282392 2.3651536 2.400358 2.4338305 2.46557 2.4955685 2.5238357 2.5503738 2.5751991 2.5983188 2.6197462 2.6394982 2.6575835 2.6740203 2.6888185 2.701989 2.7135463 2.723502 2.7318618 2.7386348 2.7438283 2.747446 2.749493 2.75 2.749982 2.7493382 2.7477887 2.7453585 2.742072 2.7379553 2.733033 2.7273302 2.7208724 2.7136846 2.705792 2.697219 2.6879904 2.6781309 2.6676645 2.656615 2.645006 2.632861 2.6202025 2.6070533 2.5934355 2.579371 2.5648806 2.5499856 2.5347064 2.5190628 2.5030746 2.4867609 2.47014 2.4532304 2.4360495 2.4186149 2.400943 2.3830502 2.3649526 2.346665 2.3282027 2.30958 2.290811 2.2719092 2.2528877 2.2337594 2.214536 2.1952298 2.1758518 2.1564133 2.136925 2.117397 2.097839 2.0782607 2.0586708 2.0390785 2.0194917 1.9999188 1.9803674 1.960845 1.9413584 1.9219146 1.9025198 1.8831805 1.8639023 1.844691 1.8255519 1.8064898 1.78751 1.7686168 1.7498146 1.7311075 1.7124995 1.6939942 1.675595 1.6573054 1.6391283 1.6210668 1.6031234 1.5853007 1.5676012 1.550027 1.5325803 1.5152628 1.4980766 1.481023 1.4641035 1.4473196 1.4306726 1.4141637 1.3977935 1.3815634 1.3654739 1.3495257 1.3337195 1.3180557 1.3025349 1.2871574 1.2719232 1.2568328 1.241886 1.2270832 1.212424 1.1979085 1.1835365 1.1693078 1.155222 1.141279 1.1274782 1.1138194 1.1003019 1.0869251 1.0736889 1.0605923 1.0476348 1.0348157 1.0221344 1.00959 0.9971819 0.98490924 0.9727712 0.96076703 0.94889575 0.93715656 0.92554855 0.9140708 0.9027223 0.8915022 0.88040954 0.8694433 0.8586025 0.84788615 0.8372932 0.82682264 0.81647354 0.80624473 0.7961352 0.78614396 0.7762699 0.766512 0.7568692 0.7473404 0.7379245 0.7286206 0.71942747 0.7103441 0.70136935 0.69250226 0.68374175 0.6750867 0.66653603 0.65808874 0.64974374 0.6415 0.63335645 0.6253121 0.6173658 0.60951656 0.6017633 0.5941051 0.5865409 0.5790696 0.5716903 0.5644019 0.5572035 0.55009395 0.5430724 0.5361378 0.5292892 0.5225256 0.51584613 0.50924975 0.50273556 0.49630255 0.48994985 0.48367652 0.47748166 0.47136435 0.46532366 0.45935875 0.45346868 0.4476526 0.44190964 0.43623894 0.43063962 0.42511088 0.41965184 0.41426167 0.4089396 0.40368474 0.39849636 0.39337358 0.38831568 0.38332185 0.3783913 0.3735233 0.36871704 0.36397183 0.35928687 0.3546615 0.35009488 0.3455864 0.3411353 0.33674085 0.3324024 0.32811922 0.3238907 0.31971607 0.31559473 0.311526 0.3075092 0.30354375 0.29962897 0.29576424 0.2919489 0.28818244 0.28446412 0.28079343 0.27716973 0.27359244 0.270061 0.2665748 0.26313332 0.25973594 0.25638217 0.2530714 0.24980313 0.2465768 0.24339192 0.24024792 0.2371443 0.23408058 0.23105621 0.22807074 0.22512363 0.22221442 0.21934262 0.21650776 0.21370938 0.210947 0.20822018 0.20552847 0.2028714 0.20024855 0.19765948 0.19510375 0.19258095 0.19009066 0.18763244 0.18520592 0.18281068 0.1804463 0.17811242 0.17580862 0.17353454 0.17128979 0.16907398 0.16688678 0.16472778 0.16259664 0.160493 0.15841651 0.15636683 0.15434359 0.15234648 0.15037516 0.14842927 0.14650853 0.14461258 0.14274113 0.14089385 0.13907042 0.13727054 0.13549392 0.13374026 0.13200925 0.13030061 0.12861404 0.12694928 0.12530603 0.12368401 0.12208296 0.12050261 0.118942685 0.117402926 0.115883075 0.11438288 0.112902075 0.11144041 0.10999766 0.108573556 0.10716787 0.10578037 0.104410805 0.10305896 0.101724595 0.100407496 0.09910743 0.09782418 0.096557535 0.095307276 0.094073184 0.092855066 0.091652706 0.090465896 0.08929445 0.088138156 0.08699683 0.085870266 0.08475828 0.08366069 0.0825773 0.081507936 0.080452405 0.07941054 0.07838215 0.077367075 0.07636514 0.075376175 0.07440001 0.07343648 0.07248541 0.07154666 0.07062007 0.069705464 0.0688027 0.06791162 0.06703208 0.06616392 0.065307006 0.06446118 0.06362631 0.06280225 0.06198885 0.061185986 0.060393516 0.05961131 0.058839228 0.05807714 0.057324924 0.056582447 0.055849582 0.05512621 0.0544122 0.053707436 0.053011797 0.05232517 0.051647432 0.05097847 0.05031817

</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="2.75" PeakHeight="290.804" Num="5" zHalfNm="259.369" Error="1.893">
-75.033 4.879 -3.186 1.459 -0.217
</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="6516.235" A="-1.15807617E11" B="3.5743092E7" C="-2757.8293" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.235" EndDistance="6552.471" A="0.0" B="667.96295" C="-0.06247208" Error="0.0133"/>
<QuasiParabolic ID="3" StartDistance="6552.471" EndDistance="6587.0" A="2.66249871E10" B="-8205857.0" C="632.2447" Error="0.0133"/>
<QuasiParabolic ID="4" StartDistance="6587.0" EndDistance="6589.0" A="4.23514839E12" B="-1.2860329E9" C="97628.375" Error="0.0137"/>
<QuasiParabolic ID="5" StartDistance="6589.0" EndDistance="6605.0" A="2.42798585E12" B="-7.374937E8" C="56003.0" Error="0.0339"/>
<QuasiParabolic ID="6" StartDistance="6605.0" EndDistance="6634.0" A="5.591951E12" B="-1.69554522E9" C="128527.72" Error="0.0326"/>
<QuasiParabolic ID="7" StartDistance="6634.0" EndDistance="6660.804" A="-7.9948515E12" B="2.40056653E9" C="-180193.39" Error="0.0132"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.706" Depth="0.154"/>
<TopsideChapman PeakHeight="290.804" PeakDensity="93827.55" PeakScaleHeight="23.967" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
