<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 09:40:00.000"
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="20.0">
<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: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.17 (107) 09:40:00</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">
FF202610704170940001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.486" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.760" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.125" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.075" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="2.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="295.999" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.008" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.125" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.125" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="236.178" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="198.457" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.001" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="47.864" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.217" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="26.567" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="59.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.430" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 251.667 253.333 255.000 256.667 258.333 260.000 261.667 263.333 265.000 266.667 268.333 270.000 272.500 275.000 277.500 280.000 283.333 286.667 290.000 292.500 295.999 299.863 304.151 308.938 314.316 320.402 327.345
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 0 0 0 42 0 0 0 0 0 66 66 57 54 54 0 0 54 54 54 54 54 54 54 39 39
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="535">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.262 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 129.43433 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 148.86867 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 168.303 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 236.178 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.295156 0.43714613 0.5350177 0.60977286 0.6710965 0.7232133 0.76837176 0.8079198 0.84271157 0.873345 0.900253 0.92373717 0.94404685 0.96135056 0.97579753 0.9874882 0.9965035 1.0029029 1.0067276 1.008 1.0073274 1.0053142 1.0019823 0.9973025 0.99119955 0.9837626 0.9748411 0.9645261 0.95269936 0.93931985 0.9243797 0.9077776 0.8893837 0.8691741 0.84691876 0.8225891 0.7959056 0.7665769 0.73427135 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.718 0.71995974 0.7348818 0.74980384 0.7647259 0.77964795 0.79456997 0.80949205 0.8244141 0.8393361 0.8542582 0.8691802 0.8841023 0.8990243 0.91394633 0.9288684 0.94379044 0.95871246 0.97363454 0.98855656 1.0034786 1.008 1.0300049 1.0613544 1.092666 1.1241171 1.1558263 1.1878638 1.2202733 1.2530557 1.2862023 1.3196782 1.3534245 1.3873893 1.4214835 1.4556383 1.4897724 1.5238097 1.5576831 1.5913305 1.6246982 1.6577455 1.6904343 1.7227465 1.7546682 1.7861744 1.8172725 1.8479602 1.8782418 1.9081227 1.9376132 1.9667209 1.9954692 2.023864 2.0519137 2.0796463 2.1070652 2.1341858 2.1610172 2.187586 2.2138915 2.2399478 2.2657645 2.291357 2.3167248 2.341878 2.3668268 2.3915668 2.4160998 2.4404275 2.464547 2.4884405 2.512106 2.5355203 2.5586565 2.5814815 2.603948 2.6260016 2.6475656 2.668541 2.6888006 2.7081914 2.726515 2.7435338 2.758953 2.7724442 2.7836354 2.7921562 2.7976751 2.7999465 2.8 2.7997398 2.7987323 2.7969835 2.794512 2.7913365 2.787476 2.7829492 2.7777748 2.771972 2.765559 2.7585552 2.7509787 2.7428482 2.7341821 2.7249987 2.7153156 2.705151 2.6945226 2.6834476 2.6719432 2.660026 2.6477134 2.6350212 2.6219654 2.6085625 2.5948274 2.5807755 2.5664217 2.551781 2.5368671 2.5216947 2.506277 2.4906275 2.4747593 2.4586852 2.4424174 2.4259682 2.4093494 2.3925724 2.3756487 2.3585887 2.3414032 2.3241026 2.3066967 2.289195 2.2716072 2.2539423 2.2362092 2.218416 2.2005715 2.1826832 2.1647594 2.146807 2.1288335 2.1108458 2.0928507 2.0748546 2.0568635 2.0388837 2.020921 2.002981 1.9850686 1.9671893 1.949348 1.9315494 1.9137981 1.8960984 1.8784544 1.8608702 1.8433496 1.8258961 1.8085133 1.7912046 1.7739729 1.7568214 1.7397529 1.7227701 1.7058756 1.689072 1.6723614 1.655746 1.6392279 1.6228092 1.6064914 1.5902766 1.5741662 1.5581616 1.5422646 1.5264761 1.5107975 1.4952301 1.4797746 1.4644321 1.4492036 1.4340898 1.4190913 1.404209 1.3894434 1.3747948 1.360264 1.3458511 1.3315566 1.3173807 1.3033235 1.2893853 1.2755662 1.2618663 1.2482855 1.2348238 1.2214812 1.2082576 1.1951526 1.1821662 1.1692982 1.1565483 1.1439161 1.1314014 1.1190038 1.1067228 1.0945581 1.0825093 1.0705758 1.0587572 1.047053 1.0354626 1.0239854 1.0126209 1.0013686 0.99022776 0.97919774 0.96827793 0.95746773 0.94676644 0.9361733 0.9256878 0.915309 0.9050364 0.89486915 0.8848066 0.8748479 0.8649923 0.8552392 0.84558773 0.83603716 0.8265867 0.8172355 0.807983 0.7988281 0.7897703 0.7808086 0.7719424 0.7631707 0.7544928 0.74590796 0.7374154 0.7290141 0.7207035 0.7124827 0.7043509 0.6963073 0.68835115 0.6804816 0.6726979 0.66499925 0.6573849 0.6498539 0.6424056 0.63503927 0.62775403 0.6205491 0.61342376 0.60637724 0.5994087 0.5925175 0.5857027 0.57896376 0.5722998 0.5657101 0.5591939 0.5527505 0.54637915 0.5400791 0.53384966 0.52769005 0.52159965 0.5155777 0.5096234 0.50373626 0.4979154 0.49216023 0.48647 0.4808441 0.4752818 0.46978247 0.4643454 0.45896998 0.45365554 0.4484014 0.44320697 0.43807155 0.43299457 0.4279754 0.42301336 0.41810787 0.41325834 0.40846413 0.40372467 0.39903936 0.39440757 0.38982877 0.38530236 0.38082778 0.37640443 0.37203178 0.36770925 0.3634363 0.3592124 0.35503697 0.35090953 0.3468295 0.34279636 0.3388096 0.3348687 0.33097318 0.32712248 0.32331616 0.31955367 0.31583455 0.31215832 0.30852446 0.30493253 0.30138206 0.2978726 0.29440364 0.29097477 0.2875855 0.2842354 0.28092402 0.27765095 0.27441573 0.27121797 0.2680572 0.264933 0.261845 0.25879273 0.25577584 0.25279388 0.2498465 0.24693328 0.24405383 0.24120778 0.23839472 0.2356143 0.23286615 0.23014988 0.22746515 0.22481157 0.22218882 0.2195965 0.21703431 0.21450187 0.21199887 0.20952494 0.20707977 0.20466301 0.20227435 0.19991347 0.19758004 0.19527374 0.19299427 0.19074132 0.18851458 0.18631373 0.18413852 0.18198861 0.17986372 0.17776357 0.17568788 0.17363635 0.1716087 0.16960467 0.16762398 0.16566636 0.16373155 0.16181926 0.15992928 0.1580613 0.1562151 0.15439041 0.15258698 0.15080458 0.14904295 0.14730185 0.14558107 0.14388034 0.14219943 0.14053813 0.1388962 0.13727342 0.13566957 0.13408442 0.13251777 0.13096939 0.12943907 0.1279266 0.1264318 0.12495441 0.12349427 0.122051165 0.12062491 0.11921529 0.117822126 0.11644521 0.11508438 0.11373943 0.11241017 0.11109644 0.10979804 0.1085148 0.10724653 0.105993085 0.10475426 0.10352991 0.102319844 0.101123914 0.099941954 0.098773785 0.097619265 0.096478224 0.09535051 0.09423597 0.09313445 0.092045784 0.09096984 0.08990646 0.088855505 0.08781683 0.08679028 0.085775726 0.08477302 0.08378203 0.082802616 0.081834644 0.08087798 0.079932496 0.07899806 0.07807454 0.077161804 0.07625974 0.07536821 0.0744871 0.07361628 0.07275564 0.07190506 0.07106442 0.0702336 0.06941249 0.068600975 0.06779894 0.06700628 0.066222884 0.06544864 0.06468345 0.0639272 0.06317979 0.062441114 0.061711073 0.060989562 0.060276486 0.059571743 0.058875237 0.05818687 0.05750655 0.056834184 0.056169674 0.05551293 0.054863866 0.05422239 0.05358841 0.05296184 0.052342594 0.051730588 0.051125735 0.050527953

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.008" PeakHeight="110.0" Num="3" Error="0.0">
-26.54 8.034 -1.232
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.008" EndFrequency="2.8" PeakHeight="236.178" Num="5" zHalfNm="198.457" Error="1.265">
-61.372 -10.905 6.317 -2.431 0.516
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6459.939" EndDistance="6480.001" A="-4.4238635E12" B="1.36538995E9" C="-105353.15" Error="0.00336"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6499.434" A="-2.35425418E12" B="7.266217E8" C="-56065.473" Error="0.00143"/>
<QuasiParabolic ID="2" StartDistance="6499.434" EndDistance="6518.869" A="0.0" B="-10807.816" C="2.177674" Error="0.00819"/>
<QuasiParabolic ID="3" StartDistance="6518.869" EndDistance="6537.0" A="5.9121408E11" B="-1.82205328E8" C="14038.628" Error="0.00943"/>
<QuasiParabolic ID="4" StartDistance="6537.0" EndDistance="6541.0" A="9.7097236E12" B="-2.97202022E9" C="227425.11" Error="0.00909"/>
<QuasiParabolic ID="5" StartDistance="6541.0" EndDistance="6558.0" A="2.05461101E12" B="-6.3136499E8" C="48503.293" Error="0.00804"/>
<QuasiParabolic ID="6" StartDistance="6558.0" EndDistance="6599.0" A="1.69763308E11" B="-5.6541004E7" C="4677.128" Error="0.00866"/>
<QuasiParabolic ID="7" StartDistance="6599.0" EndDistance="6606.178" A="-1.54559043E13" B="4.6792274E9" C="-354147.56" Error="0.00174"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="58.303" Depth="0.29"/>
<TopsideChapman PeakHeight="236.178" PeakDensity="97270.47" PeakScaleHeight="26.567" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
